Financial functions more rationalization (#1990)

* Additional unit tests and rationalisation for Financial Functions
* Providing a series of sample files for Financial functions
* Refactor the last of the existing Financial functions
* Some more unit tests with default assignments from null arguments

Co-authored-by: Adrien Crivelli <adrien.crivelli@gmail.com>

phpstan-baseline.neon

@@ -700,236 +700,6 @@ parameters:
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@@ -970,411 +740,6 @@ parameters:
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-		-
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 			message: "#^Property PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\CashFlow\\\\Constant\\\\Periodic\\\\InterestAndPrincipal\\:\\:\\$interest has no typehint specified\\.$#"
 			count: 1
@@ -1501,289 +866,74 @@ parameters:
 			path: src/PhpSpreadsheet/Calculation/Financial/CashFlow/Variable/Periodic.php
 
 		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\AccruedInterest\\:\\:validateDate\\(\\) has no return typehint specified\\.$#"
+			message: "#^Binary operation \"\\*\" between float\\|string and int results in an error\\.$#"
-			count: 1
+			count: 2
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/AccruedInterest.php
+			path: src/PhpSpreadsheet/Calculation/Financial/Coupons.php
 
 		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\AccruedInterest\\:\\:validateDate\\(\\) has parameter \\$date with no typehint specified\\.$#"
+			message: "#^Binary operation \"\\*\" between float\\|string and int\\|string results in an error\\.$#"
 			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/AccruedInterest.php
+			path: src/PhpSpreadsheet/Calculation/Financial/Coupons.php
 
 		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\AccruedInterest\\:\\:validateFloat\\(\\) has parameter \\$value with no typehint specified\\.$#"
+			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Coupons\\:\\:couponFirstPeriodDate\\(\\) has no return typehint specified\\.$#"
 			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/AccruedInterest.php
+			path: src/PhpSpreadsheet/Calculation/Financial/Coupons.php
 
 		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\AccruedInterest\\:\\:validateSettlementDate\\(\\) has no return typehint specified\\.$#"
+			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Coupons\\:\\:couponFirstPeriodDate\\(\\) has parameter \\$maturity with no typehint specified\\.$#"
 			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/AccruedInterest.php
+			path: src/PhpSpreadsheet/Calculation/Financial/Coupons.php
 
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 			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/AccruedInterest.php
+			path: src/PhpSpreadsheet/Calculation/Financial/Coupons.php
 
 		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\AccruedInterest\\:\\:validateMaturityDate\\(\\) has no return typehint specified\\.$#"
+			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Coupons\\:\\:couponFirstPeriodDate\\(\\) has parameter \\$settlement with no typehint specified\\.$#"
 			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/AccruedInterest.php
+			path: src/PhpSpreadsheet/Calculation/Financial/Coupons.php
 
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+			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Coupons\\:\\:validateCouponPeriod\\(\\) has parameter \\$maturity with no typehint specified\\.$#"
 			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/AccruedInterest.php
+			path: src/PhpSpreadsheet/Calculation/Financial/Coupons.php
 
 		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\AccruedInterest\\:\\:validateIssueDate\\(\\) has no return typehint specified\\.$#"
+			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Coupons\\:\\:validateCouponPeriod\\(\\) has parameter \\$settlement with no typehint specified\\.$#"
 			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/AccruedInterest.php
+			path: src/PhpSpreadsheet/Calculation/Financial/Coupons.php
 
 		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\AccruedInterest\\:\\:validateIssueDate\\(\\) has parameter \\$issue with no typehint specified\\.$#"
+			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Depreciation\\:\\:validateCost\\(\\) has parameter \\$cost with no typehint specified\\.$#"
 			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/AccruedInterest.php
+			path: src/PhpSpreadsheet/Calculation/Financial/Depreciation.php
 
 		-
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 			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/AccruedInterest.php
+			path: src/PhpSpreadsheet/Calculation/Financial/Depreciation.php
 
 		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\AccruedInterest\\:\\:validateSecurityPeriod\\(\\) has parameter \\$settlement with no typehint specified\\.$#"
+			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Depreciation\\:\\:validateLife\\(\\) has parameter \\$life with no typehint specified\\.$#"
 			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/AccruedInterest.php
+			path: src/PhpSpreadsheet/Calculation/Financial/Depreciation.php
 
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-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\AccruedInterest\\:\\:validateRate\\(\\) has parameter \\$rate with no typehint specified\\.$#"
+			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Depreciation\\:\\:validatePeriod\\(\\) has parameter \\$period with no typehint specified\\.$#"
 			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/AccruedInterest.php
+			path: src/PhpSpreadsheet/Calculation/Financial/Depreciation.php
 
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+			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Depreciation\\:\\:validateMonth\\(\\) has parameter \\$month with no typehint specified\\.$#"
 			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/AccruedInterest.php
+			path: src/PhpSpreadsheet/Calculation/Financial/Depreciation.php
 
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-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\AccruedInterest\\:\\:validatePrice\\(\\) has parameter \\$price with no typehint specified\\.$#"
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 			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/AccruedInterest.php
+			path: src/PhpSpreadsheet/Calculation/Financial/Depreciation.php
-
-		-
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-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Price\\:\\:validateIssueDate\\(\\) has parameter \\$issue with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Price.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Price\\:\\:validateSecurityPeriod\\(\\) has parameter \\$maturity with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Price.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Price\\:\\:validateSecurityPeriod\\(\\) has parameter \\$settlement with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Price.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Price\\:\\:validateRate\\(\\) has parameter \\$rate with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Price.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Price\\:\\:validateParValue\\(\\) has parameter \\$parValue with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Price.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Price\\:\\:validatePrice\\(\\) has parameter \\$price with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Price.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Price\\:\\:validateYield\\(\\) has parameter \\$yield with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Price.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Price\\:\\:validateRedemption\\(\\) has parameter \\$redemption with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Price.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Price\\:\\:validateDiscount\\(\\) has parameter \\$discount with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Price.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Price\\:\\:validateFrequency\\(\\) has parameter \\$frequency with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Price.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Price\\:\\:validateBasis\\(\\) has parameter \\$basis with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Price.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateDate\\(\\) has no return typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateDate\\(\\) has parameter \\$date with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateFloat\\(\\) has parameter \\$value with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateSettlementDate\\(\\) has no return typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateSettlementDate\\(\\) has parameter \\$settlement with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateMaturityDate\\(\\) has no return typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateMaturityDate\\(\\) has parameter \\$maturity with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateIssueDate\\(\\) has no return typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateIssueDate\\(\\) has parameter \\$issue with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateSecurityPeriod\\(\\) has parameter \\$maturity with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateSecurityPeriod\\(\\) has parameter \\$settlement with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateRate\\(\\) has parameter \\$rate with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateParValue\\(\\) has parameter \\$parValue with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validatePrice\\(\\) has parameter \\$price with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateYield\\(\\) has parameter \\$yield with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateRedemption\\(\\) has parameter \\$redemption with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateDiscount\\(\\) has parameter \\$discount with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateFrequency\\(\\) has parameter \\$frequency with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Financial\\\\Securities\\\\Yields\\:\\:validateBasis\\(\\) has parameter \\$basis with no typehint specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php
 
 		-
 			message: "#^Strict comparison using \\=\\=\\= between string and null will always evaluate to false\\.$#"

samples/Calculations/Financial/ACCRINT.php

@@ -0,0 +1,35 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel\Helpers as DateHelper;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the accrued interest for a security that pays periodic interest.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Issue Date', DateHelper::getDateValue('01-Jan-2012')],
+    ['First Interest Date', DateHelper::getDateValue('01-Apr-2012')],
+    ['Settlement Date', DateHelper::getDateValue('31-Dec-2013')],
+    ['Annual Coupon Rate', 0.08],
+    ['Par Value', 10000],
+    ['Frequency', 4],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B3')->getNumberFormat()->setFormatCode('dd-mmm-yyyy');
+$worksheet->getStyle('B4')->getNumberFormat()->setFormatCode('0.00%');
+$worksheet->getStyle('B5')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+// Now the formula
+$worksheet->setCellValue('B10', '=ACCRINT(B1, B2, B3, B4, B5, B6)');
+$worksheet->getStyle('B10')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+$helper->log($worksheet->getCell('B10')->getValue());
+$helper->log('ACCRINT() Result is ' . $worksheet->getCell('B10')->getFormattedValue());

samples/Calculations/Financial/ACCRINTM.php

@@ -0,0 +1,33 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel\Helpers as DateHelper;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the accrued interest for a security that pays interest at maturity.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Issue Date', DateHelper::getDateValue('01-Jan-2012')],
+    ['Settlement Date', DateHelper::getDateValue('31-Dec-2012')],
+    ['Annual Coupon Rate', 0.08],
+    ['Par Value', 10000],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B2')->getNumberFormat()->setFormatCode('dd-mmm-yyyy');
+$worksheet->getStyle('B3')->getNumberFormat()->setFormatCode('0.00%');
+$worksheet->getStyle('B4')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+// Now the formula
+$worksheet->setCellValue('B6', '=ACCRINTM(B1, B2, B3, B4)');
+$worksheet->getStyle('B6')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+$helper->log($worksheet->getCell('B6')->getValue());
+$helper->log('ACCRINTM() Result is ' . $worksheet->getCell('B6')->getFormattedValue());

samples/Calculations/Financial/AMORDEGRC.php

@@ -0,0 +1,38 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel\Helpers as DateHelper;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the prorated linear depreciation of an asset for a specified accounting period.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Cost', 150.00],
+    ['Date Purchased', DateHelper::getDateValue('01-Jan-2015')],
+    ['First Period Date', DateHelper::getDateValue('30-Sep-2015')],
+    ['Salvage Value', 20.00],
+    ['Number of Periods', 1],
+    ['Depreciation Rate', 0.20],
+    ['Basis', FinancialConstants::BASIS_DAYS_PER_YEAR_360_EUROPEAN],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1')->getNumberFormat()->setFormatCode('$#,##0.00');
+$worksheet->getStyle('B2:B3')->getNumberFormat()->setFormatCode('dd-mmm-yyyy');
+$worksheet->getStyle('B4')->getNumberFormat()->setFormatCode('$#,##0.00');
+$worksheet->getStyle('B6')->getNumberFormat()->setFormatCode('0.00%');
+
+// Now the formula
+$worksheet->setCellValue('B10', '=AMORDEGRC(B1, B2, B3, B4, B5, B6, B7)');
+$worksheet->getStyle('B10')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+$helper->log($worksheet->getCell('B10')->getValue());
+$helper->log('AMORDEGRC() Result is ' . $worksheet->getCell('B10')->getFormattedValue());

samples/Calculations/Financial/AMORLINC.php

@@ -0,0 +1,38 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel\Helpers as DateHelper;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the prorated linear depreciation of an asset for a specified accounting period.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Cost', 150.00],
+    ['Date Purchased', DateHelper::getDateValue('01-Jan-2015')],
+    ['First Period Date', DateHelper::getDateValue('30-Sep-2015')],
+    ['Salvage Value', 20.00],
+    ['Period', 1],
+    ['Depreciation Rate', 0.20],
+    ['Basis', FinancialConstants::BASIS_DAYS_PER_YEAR_360_EUROPEAN],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1')->getNumberFormat()->setFormatCode('$#,##0.00');
+$worksheet->getStyle('B2:B3')->getNumberFormat()->setFormatCode('dd-mmm-yyyy');
+$worksheet->getStyle('B4')->getNumberFormat()->setFormatCode('$#,##0.00');
+$worksheet->getStyle('B6')->getNumberFormat()->setFormatCode('0.00%');
+
+// Now the formula
+$worksheet->setCellValue('B10', '=AMORLINC(B1, B2, B3, B4, B5, B6, B7)');
+$worksheet->getStyle('B10')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+$helper->log($worksheet->getCell('B10')->getValue());
+$helper->log('AMORLINC() Result is ' . $worksheet->getCell('B10')->getFormattedValue());

samples/Calculations/Financial/COUPDAYBS.php

@@ -0,0 +1,29 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel\Helpers as DateHelper;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the number of days from the beginning of a coupon\'s period to the settlement date.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Settlement Date', DateHelper::getDateValue('01-Jan-2011')],
+    ['Maturity Date', DateHelper::getDateValue('25-Oct-2012')],
+    ['Frequency', 4],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B2')->getNumberFormat()->setFormatCode('dd-mmm-yyyy');
+
+// Now the formula
+$worksheet->setCellValue('B6', '=COUPDAYBS(B1, B2, B3)');
+
+$helper->log($worksheet->getCell('B6')->getValue());
+$helper->log('COUPDAYBS() Result is ' . $worksheet->getCell('B6')->getFormattedValue());

samples/Calculations/Financial/COUPDAYS.php

@@ -0,0 +1,29 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel\Helpers as DateHelper;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the number of days in the coupon period that contains the settlement date.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Settlement Date', DateHelper::getDateValue('01-Jan-2011')],
+    ['Maturity Date', DateHelper::getDateValue('25-Oct-2012')],
+    ['Frequency', 4],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B2')->getNumberFormat()->setFormatCode('dd-mmm-yyyy');
+
+// Now the formula
+$worksheet->setCellValue('B6', '=COUPDAYS(B1, B2, B3)');
+
+$helper->log($worksheet->getCell('B6')->getValue());
+$helper->log('COUPDAYS() Result is ' . $worksheet->getCell('B6')->getFormattedValue());

samples/Calculations/Financial/COUPDAYSNC.php

@@ -0,0 +1,29 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel\Helpers as DateHelper;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the number of days from the settlement date to the next coupon date.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Settlement Date', DateHelper::getDateValue('01-Jan-2011')],
+    ['Maturity Date', DateHelper::getDateValue('25-Oct-2012')],
+    ['Frequency', 4],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B2')->getNumberFormat()->setFormatCode('dd-mmm-yyyy');
+
+// Now the formula
+$worksheet->setCellValue('B6', '=COUPDAYSNC(B1, B2, B3)');
+
+$helper->log($worksheet->getCell('B6')->getValue());
+$helper->log('COUPDAYSNC() Result is ' . $worksheet->getCell('B6')->getFormattedValue());

samples/Calculations/Financial/COUPNCD.php

@@ -0,0 +1,30 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel\Helpers as DateHelper;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the next coupon date, after the settlement date.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Settlement Date', DateHelper::getDateValue('01-Jan-2011')],
+    ['Maturity Date', DateHelper::getDateValue('25-Oct-2012')],
+    ['Frequency', 4],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B2')->getNumberFormat()->setFormatCode('dd-mmm-yyyy');
+
+// Now the formula
+$worksheet->setCellValue('B6', '=COUPNCD(B1, B2, B3)');
+$worksheet->getStyle('B6')->getNumberFormat()->setFormatCode('dd-mmm-yyyy');
+
+$helper->log($worksheet->getCell('B6')->getValue());
+$helper->log('COUPNCD() Result is ' . $worksheet->getCell('B6')->getFormattedValue());

samples/Calculations/Financial/COUPNUM.php

@@ -0,0 +1,30 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel\Helpers as DateHelper;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the number of coupons payable, between a security\'s settlement date and maturity date,');
+$helper->log('rounded up to the nearest whole coupon.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Settlement Date', DateHelper::getDateValue('01-Jan-2011')],
+    ['Maturity Date', DateHelper::getDateValue('25-Oct-2012')],
+    ['Frequency', 4],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B2')->getNumberFormat()->setFormatCode('dd-mmm-yyyy');
+
+// Now the formula
+$worksheet->setCellValue('B6', '=COUPNUM(B1, B2, B3)');
+
+$helper->log($worksheet->getCell('B6')->getValue());
+$helper->log('COUPNUM() Result is ' . $worksheet->getCell('B6')->getFormattedValue());

samples/Calculations/Financial/COUPPCD.php

@@ -0,0 +1,30 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel\Helpers as DateHelper;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the previous coupon date, before the settlement date for a security.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Settlement Date', DateHelper::getDateValue('01-Jan-2011')],
+    ['Maturity Date', DateHelper::getDateValue('25-Oct-2012')],
+    ['Frequency', 4],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B2')->getNumberFormat()->setFormatCode('dd-mmm-yyyy');
+
+// Now the formula
+$worksheet->setCellValue('B6', '=COUPPCD(B1, B2, B3)');
+$worksheet->getStyle('B6')->getNumberFormat()->setFormatCode('dd-mmm-yyyy');
+
+$helper->log($worksheet->getCell('B6')->getValue());
+$helper->log('COUPPCD() Result is ' . $worksheet->getCell('B6')->getFormattedValue());

samples/Calculations/Financial/CUMIPMT.php

@@ -0,0 +1,38 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the cumulative interest paid on a loan or investment, between two specified periods.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Interest Rate (per period)', 0.05 / 12],
+    ['Number of Periods', 5 * 12],
+    ['Present Value', 50000],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1')->getNumberFormat()->setFormatCode('0.00%');
+$worksheet->getStyle('B3')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+// Now the formula
+$baseRow = 5;
+for ($year = 1; $year <= 5; ++$year) {
+    $row = (string) ($baseRow + $year);
+    $yearStartPeriod = (int) $year * 12 - 11;
+    $yearEndPeriod = (int) $year * 12;
+
+    $worksheet->setCellValue("A{$row}", "Yr {$year}");
+    $worksheet->setCellValue("B{$row}", "=CUMIPMT(\$B\$1, \$B\$2, \$B\$3, {$yearStartPeriod}, {$yearEndPeriod}, 0)");
+    $worksheet->getStyle("B{$row}")->getNumberFormat()->setFormatCode('$#,##0.00;-$#,##0.00');
+
+    $helper->log($worksheet->getCell("B{$row}")->getValue());
+    $helper->log("CUMIPMT() Year {$year} Result is " . $worksheet->getCell("B{$row}")->getFormattedValue());
+}

samples/Calculations/Financial/CUMPRINC.php

@@ -0,0 +1,38 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the cumulative payment on the principal of a loan or investment, between two specified periods.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Interest Rate (per period)', 0.05 / 12],
+    ['Number of Periods', 5 * 12],
+    ['Present Value', 50000],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1')->getNumberFormat()->setFormatCode('0.00%');
+$worksheet->getStyle('B3')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+// Now the formula
+$baseRow = 5;
+for ($year = 1; $year <= 5; ++$year) {
+    $row = (string) ($baseRow + $year);
+    $yearStartPeriod = (int) $year * 12 - 11;
+    $yearEndPeriod = (int) $year * 12;
+
+    $worksheet->setCellValue("A{$row}", "Yr {$year}");
+    $worksheet->setCellValue("B{$row}", "=CUMPRINC(\$B\$1, \$B\$2, \$B\$3, {$yearStartPeriod}, {$yearEndPeriod}, 0)");
+    $worksheet->getStyle("B{$row}")->getNumberFormat()->setFormatCode('$#,##0.00;-$#,##0.00');
+
+    $helper->log($worksheet->getCell("B{$row}")->getValue());
+    $helper->log("CUMPRINC() Year {$year} Result is " . $worksheet->getCell("B{$row}")->getFormattedValue());
+}

samples/Calculations/Financial/DB.php

@@ -0,0 +1,50 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the depreciation of an asset, using the Fixed Declining Balance Method,');
+$helper->log('for each period of the asset\'s lifetime.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Cost Value', 10000],
+    ['Salvage', 1000],
+    ['Life', 5, 'Years'],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B2')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+// Now the formula
+$baseRow = 5;
+for ($year = 1; $year <= 5; ++$year) {
+    $row = (string) ($baseRow + $year);
+
+    $worksheet->setCellValue("A{$row}", "Depreciation after Yr {$year}");
+    $worksheet->setCellValue("B{$row}", "=DB(\$B\$1, \$B\$2, \$B\$3, {$year})");
+    $worksheet->getStyle("B{$row}")->getNumberFormat()->setFormatCode('$#,##0.00;-$#,##0.00');
+
+    $helper->log($worksheet->getCell("B{$row}")->getValue());
+    $helper->log("DB() Year {$year} Result is " . $worksheet->getCell("B{$row}")->getFormattedValue());
+}
+
+$helper->log('And with depreciation only starting after 6 months.');
+
+$baseRow = 12;
+for ($year = 1; $year <= 6; ++$year) {
+    $row = (string) ($baseRow + $year);
+
+    $worksheet->setCellValue("A{$row}", "Depreciation after Yr {$year}");
+    $worksheet->setCellValue("B{$row}", "=DB(\$B\$1, \$B\$2, \$B\$3, {$year}, 6)");
+    $worksheet->getStyle("B{$row}")->getNumberFormat()->setFormatCode('$#,##0.00;-$#,##0.00');
+
+    $helper->log($worksheet->getCell("B{$row}")->getValue());
+    $helper->log("DB() Year {$year} Result is " . $worksheet->getCell("B{$row}")->getFormattedValue());
+}

samples/Calculations/Financial/DDB.php

@@ -0,0 +1,36 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the depreciation of an asset, using the Double Declining Balance Method,');
+$helper->log('for each period of the asset\'s lifetime.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Cost Value', 10000],
+    ['Salvage', 1000],
+    ['Life', 5, 'Years'],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B2')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+// Now the formula
+$baseRow = 5;
+for ($year = 1; $year <= 5; ++$year) {
+    $row = (string) ($baseRow + $year);
+
+    $worksheet->setCellValue("A{$row}", "Depreciation after Yr {$year}");
+    $worksheet->setCellValue("B{$row}", "=DDB(\$B\$1, \$B\$2, \$B\$3, {$year})");
+    $worksheet->getStyle("B{$row}")->getNumberFormat()->setFormatCode('$#,##0.00;-$#,##0.00');
+
+    $helper->log($worksheet->getCell("B{$row}")->getValue());
+    $helper->log("DDB() Year {$year} Result is " . $worksheet->getCell("B{$row}")->getFormattedValue());
+}

samples/Calculations/Financial/DISC.php

@@ -0,0 +1,32 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel\Helpers as DateHelper;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the the Discount Rate for a security.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Settlement Date', DateHelper::getDateValue('01-Apr-2016')],
+    ['Maturity Date', DateHelper::getDateValue('31-Mar-2021')],
+    ['Par Value', 95.00],
+    ['Redemption Value', 100.00],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B2')->getNumberFormat()->setFormatCode('dd-mmm-yyyy');
+$worksheet->getStyle('B3:B4')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+// Now the formula
+$worksheet->setCellValue('B7', '=DISC(B1, B2, B3, B4)');
+$worksheet->getStyle('B7')->getNumberFormat()->setFormatCode('0.00%');
+
+$helper->log($worksheet->getCell('B7')->getValue());
+$helper->log('DISC() Result is ' . $worksheet->getCell('B7')->getFormattedValue());

samples/Calculations/Financial/DOLLARDE.php

@@ -0,0 +1,30 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the dollar value in fractional notation, into a dollar value expressed as a decimal.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    [1.01, 16],
+    [1.1, 16],
+    [1.03, 32],
+    [1.3, 32],
+    [1.12, 32],
+];
+
+$worksheet->fromArray($arguments, null, 'A1');
+
+// Now the formula
+for ($row = 1; $row <= 5; ++$row) {
+    $worksheet->setCellValue("C{$row}", "=DOLLARDE(A{$row}, B{$row})");
+
+    $helper->log($worksheet->getCell("C{$row}")->getValue());
+    $helper->log('DOLLARDE() Result is ' . $worksheet->getCell("C{$row}")->getFormattedValue());
+}

samples/Calculations/Financial/DOLLARFR.php

@@ -0,0 +1,30 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the dollar value expressed as a decimal number, into a dollar price, expressed as a fraction.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    [1.0625, 16],
+    [1.625, 16],
+    [1.09375, 32],
+    [1.9375, 32],
+    [1.375, 32],
+];
+
+$worksheet->fromArray($arguments, null, 'A1');
+
+// Now the formula
+for ($row = 1; $row <= 5; ++$row) {
+    $worksheet->setCellValue("C{$row}", "=DOLLARFR(A{$row}, B{$row})");
+
+    $helper->log($worksheet->getCell("C{$row}")->getValue());
+    $helper->log('DOLLARFR() Result is ' . $worksheet->getCell("C{$row}")->getFormattedValue());
+}

samples/Calculations/Financial/EFFECT.php

@@ -0,0 +1,31 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the effective annual interest rate for a given nominal interest rate and number of');
+$helper->log('compounding periods per year.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    [0.10, 4],
+    [0.10, 2],
+    [0.025, 2],
+];
+
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B3')->getNumberFormat()->setFormatCode('0.00%');
+
+// Now the formula
+for ($row = 1; $row <= 3; ++$row) {
+    $worksheet->setCellValue("C{$row}", "=EFFECT(A{$row}, B{$row})");
+    $worksheet->getStyle("C{$row}")->getNumberFormat()->setFormatCode('0.00%');
+
+    $helper->log($worksheet->getCell("C{$row}")->getValue());
+    $helper->log('EFFECT() Result is ' . $worksheet->getCell("C{$row}")->getFormattedValue());
+}

samples/Calculations/Financial/FV.php

@@ -0,0 +1,36 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the Future Value of an investment with periodic constant payments and a constant interest rate.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Interest Rate', 0.05, 0.10],
+    ['Pament Frequency', 12, 4],
+    ['Duration (Years)', 5, 4],
+    ['Investment', -1000.00, -2000.00],
+    ['Payment Type', 0, 1],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:C1')->getNumberFormat()->setFormatCode('0.00%');
+$worksheet->getStyle('B4:C4')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+// Now the formula
+$worksheet->setCellValue('B8', '=FV(B1/B2, B3*B2, B4)');
+$worksheet->setCellValue('C8', '=FV(C1/C2, C3*C2, C4, null, C5)');
+$worksheet->getStyle('B8:C8')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+$helper->log($worksheet->getCell('B8')->getValue());
+$helper->log('FV() Result is ' . $worksheet->getCell('B8')->getFormattedValue());
+
+$helper->log($worksheet->getCell('C6')->getValue());
+$helper->log('FV() Result is ' . $worksheet->getCell('C8')->getFormattedValue());

samples/Calculations/Financial/FVSCHEDULE.php

@@ -0,0 +1,36 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the Future Value of an initial principal, after applying a series of compound interest rates.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Principal'],
+    [10000.00],
+    [null],
+    ['Schedule'],
+    [0.05],
+    [0.05],
+    [0.035],
+    [0.035],
+    [0.035],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('A2')->getNumberFormat()->setFormatCode('$#,##0.00');
+$worksheet->getStyle('A5:A9')->getNumberFormat()->setFormatCode('0.00%');
+
+// Now the formula
+$worksheet->setCellValue('B1', '=FVSCHEDULE(A2, A5:A9)');
+$worksheet->getStyle('B1')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+$helper->log($worksheet->getCell('B1')->getValue());
+$helper->log('FVSCHEDULE() Result is ' . $worksheet->getCell('B1')->getFormattedValue());

samples/Calculations/Financial/INTRATE.php

@@ -0,0 +1,32 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel\Helpers as DateHelper;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the interest rate for a fully invested security.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Settlement Date', DateHelper::getDateValue('01-Apr-2005')],
+    ['Maturity Date', DateHelper::getDateValue('31-Mar-2010')],
+    ['Investment', 1000.00],
+    ['Investment', 2125.00],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B2')->getNumberFormat()->setFormatCode('dd-mmm-yyyy');
+$worksheet->getStyle('B3:B4')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+// Now the formula
+$worksheet->setCellValue('B7', '=INTRATE(B1, B2, B3, B4)');
+$worksheet->getStyle('B7')->getNumberFormat()->setFormatCode('0.00%');
+
+$helper->log($worksheet->getCell('B7')->getValue());
+$helper->log('INTRATE() Result is ' . $worksheet->getCell('B7')->getFormattedValue());

samples/Calculations/Financial/IPMT.php

@@ -0,0 +1,37 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the interest payment, during a specific period of a loan or investment that is paid in,');
+$helper->log('constant periodic payments, with a constant interest rate.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Interest Rate', 0.05],
+    ['Number of Years', 5],
+    ['Present Value', 50000.00],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1')->getNumberFormat()->setFormatCode('0.00%');
+$worksheet->getStyle('B3')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+// Now the formula
+$baseRow = 6;
+for ($month = 1; $month <= 12; ++$month) {
+    $row = (string) ($baseRow + $month);
+
+    $worksheet->setCellValue("A{$row}", "Payment for Mth {$month}");
+    $worksheet->setCellValue("B{$row}", "=IPMT(\$B\$1/12, {$month}, \$B\$2*12, \$B\$3)");
+    $worksheet->getStyle("B{$row}")->getNumberFormat()->setFormatCode('$#,##0.00;-$#,##0.00');
+
+    $helper->log($worksheet->getCell("B{$row}")->getValue());
+    $helper->log("IPMT() Month {$month} Result is " . $worksheet->getCell("B{$row}")->getFormattedValue());
+}

samples/Calculations/Financial/IRR.php

@@ -0,0 +1,38 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the Internal Rate of Return for a supplied series of periodic cash flows.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Initial Investment', -100.00],
+    ['Year 1 Income', 20.00],
+    ['Year 2 Income', 24.00, 'IRR after 3 Years'],
+    ['Year 3 Income', 28.80],
+    ['Year 4 Income', 34.56, 'IRR after 5 Years'],
+    ['Year 5 Income', 41.47],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B6')->getNumberFormat()->setFormatCode('$#,##0.00;-$#,##0.00');
+
+// Now the formula
+$worksheet->setCellValue('C4', '=IRR(B1:B4)');
+$worksheet->getStyle('C4')->getNumberFormat()->setFormatCode('0.00%');
+
+$helper->log($worksheet->getCell('C4')->getValue());
+$helper->log('IRR() Result is ' . $worksheet->getCell('C4')->getFormattedValue());
+
+$worksheet->setCellValue('C6', '=IRR(B1:B6)');
+$worksheet->getStyle('C6')->getNumberFormat()->setFormatCode('0.00%');
+
+$helper->log($worksheet->getCell('C6')->getValue());
+$helper->log('IRR() Result is ' . $worksheet->getCell('C6')->getFormattedValue());

samples/Calculations/Financial/ISPMT.php

@@ -0,0 +1,36 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the interest paid during a specific period of a loan or investment.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Interest Rate', 0.05],
+    ['Number of Years', 5],
+    ['Present Value', 50000.00],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1')->getNumberFormat()->setFormatCode('0.00%');
+$worksheet->getStyle('B3')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+// Now the formula
+$baseRow = 6;
+for ($month = 1; $month <= 12; ++$month) {
+    $row = (string) ($baseRow + $month);
+
+    $worksheet->setCellValue("A{$row}", "Payment for Mth {$month}");
+    $worksheet->setCellValue("B{$row}", "=ISPMT(\$B\$1/12, {$month}, \$B\$2*12, \$B\$3)");
+    $worksheet->getStyle("B{$row}")->getNumberFormat()->setFormatCode('$#,##0.00;-$#,##0.00');
+
+    $helper->log($worksheet->getCell("B{$row}")->getValue());
+    $helper->log("ISPMT() Month {$month} Result is " . $worksheet->getCell("B{$row}")->getFormattedValue());
+}

samples/Calculations/Financial/MIRR.php

@@ -0,0 +1,42 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the Modified Internal Rate of Return for a supplied series of periodic cash flows.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Initial Investment', -100.00],
+    ['Year 1 Income', 18.00],
+    ['Year 2 Income', 22.50, 'MIRR after 3 Years'],
+    ['Year 3 Income', 28.00],
+    ['Year 4 Income', 35.50, 'MIRR after 5 Years'],
+    ['Year 5 Income', 45.00],
+    [null],
+    ['Finance Rate', 0.055],
+    ['Re-invest Rate', 0.05],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B6')->getNumberFormat()->setFormatCode('$#,##0.00;-$#,##0.00');
+$worksheet->getStyle('B8:B9')->getNumberFormat()->setFormatCode('0.00%');
+
+// Now the formula
+$worksheet->setCellValue('C4', '=MIRR(B1:B4, B8, B9)');
+$worksheet->getStyle('C4')->getNumberFormat()->setFormatCode('0.00%');
+
+$helper->log($worksheet->getCell('C4')->getValue());
+$helper->log('MIRR() Result is ' . $worksheet->getCell('C4')->getFormattedValue());
+
+$worksheet->setCellValue('C6', '=MIRR(B1:B6, B8, B9)');
+$worksheet->getStyle('C6')->getNumberFormat()->setFormatCode('0.00%');
+
+$helper->log($worksheet->getCell('C6')->getValue());
+$helper->log('MIRR() Result is ' . $worksheet->getCell('C6')->getFormattedValue());

samples/Calculations/Financial/NOMINAL.php

@@ -0,0 +1,31 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the nominal interest rate for a given effective interest rate and number of');
+$helper->log('compounding periods per year.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    [0.10, 4],
+    [0.10, 2],
+    [0.025, 12],
+];
+
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:B3')->getNumberFormat()->setFormatCode('0.00%');
+
+// Now the formula
+for ($row = 1; $row <= 3; ++$row) {
+    $worksheet->setCellValue("C{$row}", "=NOMINAL(A{$row}, B{$row})");
+    $worksheet->getStyle("C{$row}")->getNumberFormat()->setFormatCode('0.00%');
+
+    $helper->log($worksheet->getCell("C{$row}")->getValue());
+    $helper->log('NOMINAL() Result is ' . $worksheet->getCell("C{$row}")->getFormattedValue());
+}

samples/Calculations/Financial/NPER.php

@@ -0,0 +1,39 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the number of periods required to pay off a loan, for a constant periodic payment');
+$helper->log('and a constant interest rate.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Interest Rate', 0.04, 0.06],
+    ['Payments per Year', 1, 4],
+    ['Payment Amount', -6000.00, -2000],
+    ['Present Value', 50000, 60000],
+    ['Future Value', null, 30000],
+    ['Payment Type', null, FinancialConstants::PAYMENT_BEGINNING_OF_PERIOD],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:C1')->getNumberFormat()->setFormatCode('0.00%');
+$worksheet->getStyle('B3:C5')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+// Now the formula
+$worksheet->setCellValue('B8', '=NPER(B1/B2, B3, B4)');
+
+$helper->log($worksheet->getCell('B8')->getValue());
+$helper->log('NPER() Result is ' . $worksheet->getCell('B8')->getFormattedValue());
+
+$worksheet->setCellValue('C8', '=NPER(C1/C2, C3, C4, C5, C6)');
+
+$helper->log($worksheet->getCell('C8')->getValue());
+$helper->log('NPER() Result is ' . $worksheet->getCell('C8')->getFormattedValue());

samples/Calculations/Financial/NPV.php

@@ -0,0 +1,43 @@
+<?php
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+require __DIR__ . '/../../Header.php';
+
+$helper->log('Returns the Net Present Value of an investment, based on a supplied discount rate,');
+$helper->log('and a series of future payments and income.');
+
+// Create new PhpSpreadsheet object
+$spreadsheet = new Spreadsheet();
+$worksheet = $spreadsheet->getActiveSheet();
+
+// Add some data
+$arguments = [
+    ['Annual Discount Rate', 0.02, 0.05],
+    ['Initial Investment Cost', -5000.00, -10000],
+    ['Return from Year 1', 800.00, 2000.00],
+    ['Return from Year 2', 950.00, 2400.00],
+    ['Return from Year 3', 1080.00, 2900.00],
+    ['Return from Year 4', 1220.00, 3500.00],
+    ['Return from Year 5', 1500.00, 4100.00],
+];
+
+// Some basic formatting for the data
+$worksheet->fromArray($arguments, null, 'A1');
+$worksheet->getStyle('B1:C1')->getNumberFormat()->setFormatCode('0.00%');
+$worksheet->getStyle('B2:C7')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+// Now the formula
+// When initial investment is made at the end of the first period
+$worksheet->setCellValue('B10', '=NPV(B1, B2:B7)');
+$worksheet->getStyle('B10')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+$helper->log($worksheet->getCell('B10')->getValue());
+$helper->log('NPV() Result is ' . $worksheet->getCell('B10')->getFormattedValue());
+
+// When initial investment is made at the start of the first period
+$worksheet->setCellValue('C10', '=NPV(C1, C3:C7) + C2');
+$worksheet->getStyle('C10')->getNumberFormat()->setFormatCode('$#,##0.00');
+
+$helper->log($worksheet->getCell('C10')->getValue());
+$helper->log('NPV() Result is ' . $worksheet->getCell('C10')->getFormattedValue());

src/PhpSpreadsheet/Calculation/Calculation.php

@@ -855,7 +855,7 @@ class Calculation
         ],
         'DISC' => [
             'category' => Category::CATEGORY_FINANCIAL,
-            'functionCall' => [Financial::class, 'DISC'],
+            'functionCall' => [Financial\Securities\Rates::class, 'discount'],
             'argumentCount' => '4,5',
         ],
         'DMAX' => [
@@ -1429,7 +1429,7 @@ class Calculation
         ],
         'INTRATE' => [
             'category' => Category::CATEGORY_FINANCIAL,
-            'functionCall' => [Financial::class, 'INTRATE'],
+            'functionCall' => [Financial\Securities\Rates::class, 'interest'],
             'argumentCount' => '4,5',
         ],
         'IPMT' => [
@@ -2078,7 +2078,7 @@ class Calculation
         ],
         'RECEIVED' => [
             'category' => Category::CATEGORY_FINANCIAL,
-            'functionCall' => [Financial::class, 'RECEIVED'],
+            'functionCall' => [Financial\Securities\Price::class, 'received'],
             'argumentCount' => '4-5',
         ],
         'REPLACE' => [

src/PhpSpreadsheet/Calculation/DateTimeExcel/Helpers.php

@@ -16,7 +16,7 @@ class Helpers
      *
      * @return bool TRUE if the year is a leap year, otherwise FALSE
      */
-    public static function isLeapYear($year)
+    public static function isLeapYear($year): bool
     {
         return (($year % 4) === 0) && (($year % 100) !== 0) || (($year % 400) === 0);
     }
@@ -28,7 +28,7 @@ class Helpers
      *
      * @return float Excel date/time serial value
      */
-    public static function getDateValue($dateValue, bool $allowBool = true)
+    public static function getDateValue($dateValue, bool $allowBool = true): float
     {
         if (is_object($dateValue)) {
             $retval = Date::PHPToExcel($dateValue);

src/PhpSpreadsheet/Calculation/Financial.php

@@ -10,6 +10,9 @@ use PhpOffice\PhpSpreadsheet\Calculation\Financial\InterestRate;
 use PhpOffice\PhpSpreadsheet\Calculation\Financial\Securities;
 use PhpOffice\PhpSpreadsheet\Calculation\Financial\TreasuryBill;
 
+/**
+ * @deprecated 1.18.0
+ */
 class Financial
 {
     const FINANCIAL_MAX_ITERATIONS = 128;
@@ -30,12 +33,12 @@ class Financial
      *      Use the periodic() method in the Financial\Securities\AccruedInterest class instead
      *
      * @param mixed $issue the security's issue date
-     * @param mixed $firstinterest the security's first interest date
+     * @param mixed $firstInterest the security's first interest date
      * @param mixed $settlement The security's settlement date.
      *                              The security settlement date is the date after the issue date
      *                                  when the security is traded to the buyer.
      * @param mixed $rate the security's annual coupon rate
-     * @param mixed $par The security's par value.
+     * @param mixed $parValue The security's par value.
      *                            If you omit par, ACCRINT uses $1,000.
      * @param mixed $frequency The number of coupon payments per year.
      *                             Valid frequency values are:
@@ -56,20 +59,20 @@ class Financial
      */
     public static function ACCRINT(
         $issue,
-        $firstinterest,
+        $firstInterest,
         $settlement,
         $rate,
-        $par = 1000,
+        $parValue = 1000,
         $frequency = 1,
         $basis = 0,
         $calcMethod = true
     ) {
         return Securities\AccruedInterest::periodic(
             $issue,
-            $firstinterest,
+            $firstInterest,
             $settlement,
             $rate,
-            $par,
+            $parValue,
             $frequency,
             $basis,
             $calcMethod
@@ -92,7 +95,7 @@ class Financial
      * @param mixed $issue The security's issue date
      * @param mixed $settlement The security's settlement (or maturity) date
      * @param mixed $rate The security's annual coupon rate
-     * @param mixed $par The security's par value.
+     * @param mixed $parValue The security's par value.
      *                            If you omit par, ACCRINT uses $1,000.
      * @param mixed $basis The type of day count to use.
      *                            0 or omitted    US (NASD) 30/360
@@ -103,9 +106,9 @@ class Financial
      *
      * @return float|string Result, or a string containing an error
      */
-    public static function ACCRINTM($issue, $settlement, $rate, $par = 1000, $basis = 0)
+    public static function ACCRINTM($issue, $settlement, $rate, $parValue = 1000, $basis = 0)
     {
-        return Securities\AccruedInterest::atMaturity($issue, $settlement, $rate, $par, $basis);
+        return Securities\AccruedInterest::atMaturity($issue, $settlement, $rate, $parValue, $basis);
     }
 
     /**
@@ -543,6 +546,11 @@ class Financial
      * Excel Function:
      *        DISC(settlement,maturity,price,redemption[,basis])
      *
+     * @Deprecated 1.18.0
+     *
+     * @see Financial\Securities\Rates::discount()
+     *      Use the discount() method in the Financial\Securities\Rates class instead
+     *
      * @param mixed $settlement The security's settlement date.
      *                                The security settlement date is the date after the issue
      *                                date when the security is traded to the buyer.
@@ -561,30 +569,7 @@ class Financial
      */
     public static function DISC($settlement, $maturity, $price, $redemption, $basis = 0)
     {
-        $settlement = Functions::flattenSingleValue($settlement);
+        return Financial\Securities\Rates::discount($settlement, $maturity, $price, $redemption, $basis);
-        $maturity = Functions::flattenSingleValue($maturity);
-        $price = Functions::flattenSingleValue($price);
-        $redemption = Functions::flattenSingleValue($redemption);
-        $basis = Functions::flattenSingleValue($basis);
-
-        //    Validate
-        if ((is_numeric($price)) && (is_numeric($redemption)) && (is_numeric($basis))) {
-            $price = (float) $price;
-            $redemption = (float) $redemption;
-            $basis = (int) $basis;
-            if (($price <= 0) || ($redemption <= 0)) {
-                return Functions::NAN();
-            }
-            $daysBetweenSettlementAndMaturity = DateTimeExcel\YearFrac::funcYearFrac($settlement, $maturity, $basis);
-            if (!is_numeric($daysBetweenSettlementAndMaturity)) {
-                //    return date error
-                return $daysBetweenSettlementAndMaturity;
-            }
-
-            return (1 - $price / $redemption) / $daysBetweenSettlementAndMaturity;
-        }
-
-        return Functions::VALUE();
     }
 
     /**
@@ -724,8 +709,14 @@ class Financial
      * Excel Function:
      *        INTRATE(settlement,maturity,investment,redemption[,basis])
      *
+     * @Deprecated 1.18.0
+     *
+     * @see Financial\Securities\Rates::interest()
+     *      Use the interest() method in the Financial\Securities\Rates class instead
+     *
      * @param mixed $settlement The security's settlement date.
-     *                                The security settlement date is the date after the issue date when the security is traded to the buyer.
+     *                              The security settlement date is the date after the issue date when the security
+     *                                  is traded to the buyer.
      * @param mixed $maturity The security's maturity date.
      *                            The maturity date is the date when the security expires.
      * @param int $investment the amount invested in the security
@@ -741,30 +732,7 @@ class Financial
      */
     public static function INTRATE($settlement, $maturity, $investment, $redemption, $basis = 0)
     {
-        $settlement = Functions::flattenSingleValue($settlement);
+        return Financial\Securities\Rates::interest($settlement, $maturity, $investment, $redemption, $basis);
-        $maturity = Functions::flattenSingleValue($maturity);
-        $investment = Functions::flattenSingleValue($investment);
-        $redemption = Functions::flattenSingleValue($redemption);
-        $basis = Functions::flattenSingleValue($basis);
-
-        //    Validate
-        if ((is_numeric($investment)) && (is_numeric($redemption)) && (is_numeric($basis))) {
-            $investment = (float) $investment;
-            $redemption = (float) $redemption;
-            $basis = (int) $basis;
-            if (($investment <= 0) || ($redemption <= 0)) {
-                return Functions::NAN();
-            }
-            $daysBetweenSettlementAndMaturity = DateTimeExcel\YearFrac::funcYearFrac($settlement, $maturity, $basis);
-            if (!is_numeric($daysBetweenSettlementAndMaturity)) {
-                //    return date error
-                return $daysBetweenSettlementAndMaturity;
-            }
-
-            return (($redemption / $investment) - 1) / ($daysBetweenSettlementAndMaturity);
-        }
-
-        return Functions::VALUE();
     }
 
     /**
@@ -1174,7 +1142,12 @@ class Financial
     /**
      * RECEIVED.
      *
-     * Returns the price per $100 face value of a discounted security.
+     * Returns the amount received at maturity for a fully invested Security.
+     *
+     * @Deprecated 1.18.0
+     *
+     * @see Financial\Securities\Price::received()
+     *      Use the received() method in the Financial\Securities\Price class instead
      *
      * @param mixed $settlement The security's settlement date.
      *                              The security settlement date is the date after the issue date when the security
@@ -1194,27 +1167,7 @@ class Financial
      */
     public static function RECEIVED($settlement, $maturity, $investment, $discount, $basis = 0)
     {
-        $settlement = Functions::flattenSingleValue($settlement);
+        return Financial\Securities\Price::received($settlement, $maturity, $investment, $discount, $basis);
-        $maturity = Functions::flattenSingleValue($maturity);
-        $investment = (float) Functions::flattenSingleValue($investment);
-        $discount = (float) Functions::flattenSingleValue($discount);
-        $basis = (int) Functions::flattenSingleValue($basis);
-
-        //    Validate
-        if ((is_numeric($investment)) && (is_numeric($discount)) && (is_numeric($basis))) {
-            if (($investment <= 0) || ($discount <= 0)) {
-                return Functions::NAN();
-            }
-            $daysBetweenSettlementAndMaturity = DateTimeExcel\YearFrac::funcYearFrac($settlement, $maturity, $basis);
-            if (!is_numeric($daysBetweenSettlementAndMaturity)) {
-                //    return date error
-                return $daysBetweenSettlementAndMaturity;
-            }
-
-            return $investment / (1 - ($discount * $daysBetweenSettlementAndMaturity));
-        }
-
-        return Functions::VALUE();
     }
 
     /**

src/PhpSpreadsheet/Calculation/Financial/Amortization.php

@@ -4,12 +4,11 @@ namespace PhpOffice\PhpSpreadsheet\Calculation\Financial;
 
 use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel;
 use PhpOffice\PhpSpreadsheet\Calculation\Exception;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 
 class Amortization
 {
-    use BaseValidations;
-
     /**
      * AMORDEGRC.
      *
@@ -40,24 +39,33 @@ class Amortization
      *
      * @return float|string (string containing the error type if there is an error)
      */
-    public static function AMORDEGRC($cost, $purchased, $firstPeriod, $salvage, $period, $rate, $basis = 0)
+    public static function AMORDEGRC(
-    {
+        $cost,
+        $purchased,
+        $firstPeriod,
+        $salvage,
+        $period,
+        $rate,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
         $cost = Functions::flattenSingleValue($cost);
         $purchased = Functions::flattenSingleValue($purchased);
         $firstPeriod = Functions::flattenSingleValue($firstPeriod);
         $salvage = Functions::flattenSingleValue($salvage);
-        $period = floor(Functions::flattenSingleValue($period));
+        $period = Functions::flattenSingleValue($period);
         $rate = Functions::flattenSingleValue($rate);
-        $basis = ($basis === null) ? 0 : (int) Functions::flattenSingleValue($basis);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
 
         try {
-            $cost = self::validateFloat($cost);
+            $cost = FinancialValidations::validateFloat($cost);
-            $purchased = self::validateDate($purchased);
+            $purchased = FinancialValidations::validateDate($purchased);
-            $firstPeriod = self::validateDate($firstPeriod);
+            $firstPeriod = FinancialValidations::validateDate($firstPeriod);
-            $salvage = self::validateFloat($salvage);
+            $salvage = FinancialValidations::validateFloat($salvage);
-            $period = self::validateFloat($period);
+            $period = FinancialValidations::validateInt($period);
-            $rate = self::validateFloat($rate);
+            $rate = FinancialValidations::validateFloat($rate);
-            $basis = self::validateBasis($basis);
+            $basis = FinancialValidations::validateBasis($basis);
         } catch (Exception $e) {
             return $e->getMessage();
         }
@@ -118,24 +126,33 @@ class Amortization
      *
      * @return float|string (string containing the error type if there is an error)
      */
-    public static function AMORLINC($cost, $purchased, $firstPeriod, $salvage, $period, $rate, $basis = 0)
+    public static function AMORLINC(
-    {
+        $cost,
+        $purchased,
+        $firstPeriod,
+        $salvage,
+        $period,
+        $rate,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
         $cost = Functions::flattenSingleValue($cost);
         $purchased = Functions::flattenSingleValue($purchased);
         $firstPeriod = Functions::flattenSingleValue($firstPeriod);
         $salvage = Functions::flattenSingleValue($salvage);
         $period = Functions::flattenSingleValue($period);
         $rate = Functions::flattenSingleValue($rate);
-        $basis = ($basis === null) ? 0 : (int) Functions::flattenSingleValue($basis);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
 
         try {
-            $cost = self::validateFloat($cost);
+            $cost = FinancialValidations::validateFloat($cost);
-            $purchased = self::validateDate($purchased);
+            $purchased = FinancialValidations::validateDate($purchased);
-            $firstPeriod = self::validateDate($firstPeriod);
+            $firstPeriod = FinancialValidations::validateDate($firstPeriod);
-            $salvage = self::validateFloat($salvage);
+            $salvage = FinancialValidations::validateFloat($salvage);
-            $period = self::validateFloat($period);
+            $period = FinancialValidations::validateFloat($period);
-            $rate = self::validateFloat($rate);
+            $rate = FinancialValidations::validateFloat($rate);
-            $basis = self::validateBasis($basis);
+            $basis = FinancialValidations::validateBasis($basis);
         } catch (Exception $e) {
             return $e->getMessage();
         }
@@ -149,7 +166,10 @@ class Amortization
             return $yearFrac;
         }
 
-        if (($basis == 1) && ($yearFrac < 1) && (DateTimeExcel\Helpers::isLeapYear($purchasedYear))) {
+        if (
+            ($basis == FinancialConstants::BASIS_DAYS_PER_YEAR_ACTUAL) &&
+            ($yearFrac < 1) && (DateTimeExcel\Helpers::isLeapYear($purchasedYear))
+        ) {
             $yearFrac *= 365 / 366;
         }
 

src/PhpSpreadsheet/Calculation/Financial/BaseValidations.php

@@ -1,72 +0,0 @@
-<?php
-
-namespace PhpOffice\PhpSpreadsheet\Calculation\Financial;
-
-use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel;
-use PhpOffice\PhpSpreadsheet\Calculation\Exception;
-use PhpOffice\PhpSpreadsheet\Calculation\Financial\Securities\Constants as SecuritiesConstants;
-use PhpOffice\PhpSpreadsheet\Calculation\Functions;
-
-trait BaseValidations
-{
-    protected static function validateDate($date)
-    {
-        return DateTimeExcel\Helpers::getDateValue($date);
-    }
-
-    protected static function validateSettlementDate($settlement)
-    {
-        return self::validateDate($settlement);
-    }
-
-    protected static function validateMaturityDate($maturity)
-    {
-        return self::validateDate($maturity);
-    }
-
-    protected static function validateFloat($value): float
-    {
-        if (!is_numeric($value)) {
-            throw new Exception(Functions::VALUE());
-        }
-
-        return (float) $value;
-    }
-
-    protected static function validateInt($value): int
-    {
-        if (!is_numeric($value)) {
-            throw new Exception(Functions::VALUE());
-        }
-
-        return (int) floor($value);
-    }
-
-    protected static function validateFrequency($frequency): int
-    {
-        $frequency = self::validateInt($frequency);
-        if (
-            ($frequency !== SecuritiesConstants::FREQUENCY_ANNUAL) &&
-            ($frequency !== SecuritiesConstants::FREQUENCY_SEMI_ANNUAL) &&
-            ($frequency !== SecuritiesConstants::FREQUENCY_QUARTERLY)
-        ) {
-            throw new Exception(Functions::NAN());
-        }
-
-        return $frequency;
-    }
-
-    protected static function validateBasis($basis): int
-    {
-        if (!is_numeric($basis)) {
-            throw new Exception(Functions::VALUE());
-        }
-
-        $basis = (int) $basis;
-        if (($basis < 0) || ($basis > 4)) {
-            throw new Exception(Functions::NAN());
-        }
-
-        return $basis;
-    }
-}

src/PhpSpreadsheet/Calculation/Financial/CashFlow/CashFlowValidations.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation\Financial\CashFlow;
+
+use PhpOffice\PhpSpreadsheet\Calculation\Exception;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\FinancialValidations;
+use PhpOffice\PhpSpreadsheet\Calculation\Functions;
+
+class CashFlowValidations extends FinancialValidations
+{
+    /**
+     * @param mixed $rate
+     */
+    public static function validateRate($rate): float
+    {
+        $rate = self::validateFloat($rate);
+        if ($rate < 0.0) {
+            throw new Exception(Functions::NAN());
+        }
+
+        return $rate;
+    }
+
+    /**
+     * @param mixed $type
+     */
+    public static function validatePeriodType($type): int
+    {
+        $rate = self::validateInt($type);
+        if (
+            $type !== FinancialConstants::PAYMENT_END_OF_PERIOD &&
+            $type !== FinancialConstants::PAYMENT_BEGINNING_OF_PERIOD
+        ) {
+            throw new Exception(Functions::NAN());
+        }
+
+        return $rate;
+    }
+
+    /**
+     * @param mixed $presentValue
+     */
+    public static function validatePresentValue($presentValue): float
+    {
+        return self::validateFloat($presentValue);
+    }
+
+    /**
+     * @param mixed $futureValue
+     */
+    public static function validateFutureValue($futureValue): float
+    {
+        return self::validateFloat($futureValue);
+    }
+}

src/PhpSpreadsheet/Calculation/Financial/CashFlow/Constant/Periodic.php

@@ -3,13 +3,12 @@
 namespace PhpOffice\PhpSpreadsheet\Calculation\Financial\CashFlow\Constant;
 
 use PhpOffice\PhpSpreadsheet\Calculation\Exception;
-use PhpOffice\PhpSpreadsheet\Calculation\Financial\BaseValidations;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\CashFlow\CashFlowValidations;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 
 class Periodic
 {
-    use BaseValidations;
-
     /**
      * FV.
      *
@@ -31,29 +30,29 @@ class Periodic
      *
      * @return float|string
      */
-    public static function futureValue($rate, $numberOfPeriods, $payment = 0, $presentValue = 0, $type = 0)
+    public static function futureValue(
-    {
+        $rate,
+        $numberOfPeriods,
+        $payment = 0.0,
+        $presentValue = 0.0,
+        $type = FinancialConstants::PAYMENT_END_OF_PERIOD
+    ) {
         $rate = Functions::flattenSingleValue($rate);
         $numberOfPeriods = Functions::flattenSingleValue($numberOfPeriods);
         $payment = ($payment === null) ? 0.0 : Functions::flattenSingleValue($payment);
         $presentValue = ($presentValue === null) ? 0.0 : Functions::flattenSingleValue($presentValue);
-        $type = ($type === null) ? 0 : Functions::flattenSingleValue($type);
+        $type = ($type === null) ? FinancialConstants::PAYMENT_END_OF_PERIOD : Functions::flattenSingleValue($type);
 
         try {
-            $rate = self::validateFloat($rate);
+            $rate = CashFlowValidations::validateFloat($rate);
-            $numberOfPeriods = self::validateInt($numberOfPeriods);
+            $numberOfPeriods = CashFlowValidations::validateInt($numberOfPeriods);
-            $payment = self::validateFloat($payment);
+            $payment = CashFlowValidations::validateFloat($payment);
-            $presentValue = self::validateFloat($presentValue);
+            $presentValue = CashFlowValidations::validatePresentValue($presentValue);
-            $type = self::validateInt($type);
+            $type = CashFlowValidations::validatePeriodType($type);
         } catch (Exception $e) {
             return $e->getMessage();
         }
 
-        // Validate parameters
-        if ($numberOfPeriods < 0 || ($type !== 0 && $type !== 1)) {
-            return Functions::NAN();
-        }
-
         return self::calculateFutureValue($rate, $numberOfPeriods, $payment, $presentValue, $type);
     }
 
@@ -70,26 +69,31 @@ class Periodic
      *
      * @return float|string Result, or a string containing an error
      */
-    public static function presentValue($rate, $numberOfPeriods, $payment = 0, $futureValue = 0, $type = 0)
+    public static function presentValue(
-    {
+        $rate,
+        $numberOfPeriods,
+        $payment = 0.0,
+        $futureValue = 0.0,
+        $type = FinancialConstants::PAYMENT_END_OF_PERIOD
+    ) {
         $rate = Functions::flattenSingleValue($rate);
         $numberOfPeriods = Functions::flattenSingleValue($numberOfPeriods);
         $payment = ($payment === null) ? 0.0 : Functions::flattenSingleValue($payment);
         $futureValue = ($futureValue === null) ? 0.0 : Functions::flattenSingleValue($futureValue);
-        $type = ($type === null) ? 0 : Functions::flattenSingleValue($type);
+        $type = ($type === null) ? FinancialConstants::PAYMENT_END_OF_PERIOD : Functions::flattenSingleValue($type);
 
         try {
-            $rate = self::validateFloat($rate);
+            $rate = CashFlowValidations::validateRate($rate);
-            $numberOfPeriods = self::validateInt($numberOfPeriods);
+            $numberOfPeriods = CashFlowValidations::validateInt($numberOfPeriods);
-            $payment = self::validateFloat($payment);
+            $payment = CashFlowValidations::validateFloat($payment);
-            $futureValue = self::validateFloat($futureValue);
+            $futureValue = CashFlowValidations::validateFutureValue($futureValue);
-            $type = self::validateInt($type);
+            $type = CashFlowValidations::validatePeriodType($type);
         } catch (Exception $e) {
             return $e->getMessage();
         }
 
         // Validate parameters
-        if ($numberOfPeriods < 0 || ($type !== 0 && $type !== 1)) {
+        if ($numberOfPeriods < 0) {
             return Functions::NAN();
         }
 
@@ -109,26 +113,31 @@ class Periodic
      *
      * @return float|string Result, or a string containing an error
      */
-    public static function periods($rate, $payment, $presentValue, $futureValue = 0, $type = 0)
+    public static function periods(
-    {
+        $rate,
+        $payment,
+        $presentValue,
+        $futureValue = 0.0,
+        $type = FinancialConstants::PAYMENT_END_OF_PERIOD
+    ) {
         $rate = Functions::flattenSingleValue($rate);
         $payment = Functions::flattenSingleValue($payment);
         $presentValue = Functions::flattenSingleValue($presentValue);
         $futureValue = ($futureValue === null) ? 0.0 : Functions::flattenSingleValue($futureValue);
-        $type = ($type === null) ? 0 : Functions::flattenSingleValue($type);
+        $type = ($type === null) ? FinancialConstants::PAYMENT_END_OF_PERIOD : Functions::flattenSingleValue($type);
 
         try {
-            $rate = self::validateFloat($rate);
+            $rate = CashFlowValidations::validateRate($rate);
-            $payment = self::validateFloat($payment);
+            $payment = CashFlowValidations::validateFloat($payment);
-            $presentValue = self::validateFloat($presentValue);
+            $presentValue = CashFlowValidations::validatePresentValue($presentValue);
-            $futureValue = self::validateFloat($futureValue);
+            $futureValue = CashFlowValidations::validateFutureValue($futureValue);
-            $type = self::validateInt($type);
+            $type = CashFlowValidations::validatePeriodType($type);
         } catch (Exception $e) {
             return $e->getMessage();
         }
 
         // Validate parameters
-        if ($payment == 0.0 || ($type != 0 && $type != 1)) {
+        if ($payment == 0.0) {
             return Functions::NAN();
         }
 

src/PhpSpreadsheet/Calculation/Financial/CashFlow/Constant/Periodic/Cumulative.php

@@ -3,14 +3,12 @@
 namespace PhpOffice\PhpSpreadsheet\Calculation\Financial\CashFlow\Constant\Periodic;
 
 use PhpOffice\PhpSpreadsheet\Calculation\Exception;
-use PhpOffice\PhpSpreadsheet\Calculation\Financial;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\CashFlow\CashFlowValidations;
-use PhpOffice\PhpSpreadsheet\Calculation\Financial\Securities\Constants;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 
 class Cumulative
 {
-    use Financial\BaseValidations;
-
     /**
      * CUMIPMT.
      *
@@ -31,30 +29,33 @@ class Cumulative
      *
      * @return float|string
      */
-    public static function interest($rate, $periods, $presentValue, $start, $end, $type = Constants::END_OF_PERIOD)
+    public static function interest(
-    {
+        $rate,
+        $periods,
+        $presentValue,
+        $start,
+        $end,
+        $type = FinancialConstants::PAYMENT_END_OF_PERIOD
+    ) {
         $rate = Functions::flattenSingleValue($rate);
         $periods = Functions::flattenSingleValue($periods);
         $presentValue = Functions::flattenSingleValue($presentValue);
         $start = Functions::flattenSingleValue($start);
         $end = Functions::flattenSingleValue($end);
-        $type = ($type === null) ? 0 : Functions::flattenSingleValue($type);
+        $type = ($type === null) ? FinancialConstants::PAYMENT_END_OF_PERIOD : Functions::flattenSingleValue($type);
 
         try {
-            $rate = self::validateFloat($rate);
+            $rate = CashFlowValidations::validateRate($rate);
-            $periods = self::validateInt($periods);
+            $periods = CashFlowValidations::validateInt($periods);
-            $presentValue = self::validateFloat($presentValue);
+            $presentValue = CashFlowValidations::validatePresentValue($presentValue);
-            $start = self::validateInt($start);
+            $start = CashFlowValidations::validateInt($start);
-            $end = self::validateInt($end);
+            $end = CashFlowValidations::validateInt($end);
-            $type = self::validateInt($type);
+            $type = CashFlowValidations::validatePeriodType($type);
         } catch (Exception $e) {
             return $e->getMessage();
         }
 
         // Validate parameters
-        if ($type !== Constants::END_OF_PERIOD && $type !== Constants::BEGINNING_OF_PERIOD) {
-            return Functions::NAN();
-        }
         if ($start < 1 || $start > $end) {
             return Functions::NAN();
         }
@@ -93,30 +94,33 @@ class Cumulative
      *
      * @return float|string
      */
-    public static function principal($rate, $periods, $presentValue, $start, $end, $type = 0)
+    public static function principal(
-    {
+        $rate,
+        $periods,
+        $presentValue,
+        $start,
+        $end,
+        $type = FinancialConstants::PAYMENT_END_OF_PERIOD
+    ) {
         $rate = Functions::flattenSingleValue($rate);
         $periods = Functions::flattenSingleValue($periods);
         $presentValue = Functions::flattenSingleValue($presentValue);
         $start = Functions::flattenSingleValue($start);
         $end = Functions::flattenSingleValue($end);
-        $type = ($type === null) ? 0 : Functions::flattenSingleValue($type);
+        $type = ($type === null) ? FinancialConstants::PAYMENT_END_OF_PERIOD : Functions::flattenSingleValue($type);
 
         try {
-            $rate = self::validateFloat($rate);
+            $rate = CashFlowValidations::validateRate($rate);
-            $periods = self::validateInt($periods);
+            $periods = CashFlowValidations::validateInt($periods);
-            $presentValue = self::validateFloat($presentValue);
+            $presentValue = CashFlowValidations::validatePresentValue($presentValue);
-            $start = self::validateInt($start);
+            $start = CashFlowValidations::validateInt($start);
-            $end = self::validateInt($end);
+            $end = CashFlowValidations::validateInt($end);
-            $type = self::validateInt($type);
+            $type = CashFlowValidations::validatePeriodType($type);
         } catch (Exception $e) {
             return $e->getMessage();
         }
 
         // Validate parameters
-        if ($type !== 0 && $type !== 1) {
-            return Functions::NAN();
-        }
         if ($start < 1 || $start > $end) {
             return Functions::VALUE();
         }

src/PhpSpreadsheet/Calculation/Financial/CashFlow/Constant/Periodic/Interest.php

@@ -3,13 +3,12 @@
 namespace PhpOffice\PhpSpreadsheet\Calculation\Financial\CashFlow\Constant\Periodic;
 
 use PhpOffice\PhpSpreadsheet\Calculation\Exception;
-use PhpOffice\PhpSpreadsheet\Calculation\Financial\BaseValidations;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\CashFlow\CashFlowValidations;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 
 class Interest
 {
-    use BaseValidations;
-
     private const FINANCIAL_MAX_ITERATIONS = 128;
 
     private const FINANCIAL_PRECISION = 1.0e-08;
@@ -32,30 +31,33 @@ class Interest
      *
      * @return float|string
      */
-    public static function payment($interestRate, $period, $numberOfPeriods, $presentValue, $futureValue = 0, $type = 0)
+    public static function payment(
-    {
+        $interestRate,
+        $period,
+        $numberOfPeriods,
+        $presentValue,
+        $futureValue = 0,
+        $type = FinancialConstants::PAYMENT_END_OF_PERIOD
+    ) {
         $interestRate = Functions::flattenSingleValue($interestRate);
         $period = Functions::flattenSingleValue($period);
         $numberOfPeriods = Functions::flattenSingleValue($numberOfPeriods);
         $presentValue = Functions::flattenSingleValue($presentValue);
-        $futureValue = Functions::flattenSingleValue($futureValue);
+        $futureValue = ($futureValue === null) ? 0.0 : Functions::flattenSingleValue($futureValue);
-        $type = Functions::flattenSingleValue($type);
+        $type = ($type === null) ? FinancialConstants::PAYMENT_END_OF_PERIOD : Functions::flattenSingleValue($type);
 
         try {
-            $interestRate = self::validateFloat($interestRate);
+            $interestRate = CashFlowValidations::validateRate($interestRate);
-            $period = self::validateInt($period);
+            $period = CashFlowValidations::validateInt($period);
-            $numberOfPeriods = self::validateInt($numberOfPeriods);
+            $numberOfPeriods = CashFlowValidations::validateInt($numberOfPeriods);
-            $presentValue = self::validateFloat($presentValue);
+            $presentValue = CashFlowValidations::validatePresentValue($presentValue);
-            $futureValue = self::validateFloat($futureValue);
+            $futureValue = CashFlowValidations::validateFutureValue($futureValue);
-            $type = self::validateInt($type);
+            $type = CashFlowValidations::validatePeriodType($type);
         } catch (Exception $e) {
             return $e->getMessage();
         }
 
         // Validate parameters
-        if ($type != 0 && $type != 1) {
-            return Functions::NAN();
-        }
         if ($period <= 0 || $period > $numberOfPeriods) {
             return Functions::NAN();
         }
@@ -94,17 +96,19 @@ class Interest
         $principleRemaining = Functions::flattenSingleValue($principleRemaining);
 
         try {
-            $interestRate = self::validateFloat($interestRate);
+            $interestRate = CashFlowValidations::validateRate($interestRate);
-            $period = self::validateInt($period);
+            $period = CashFlowValidations::validateInt($period);
-            $numberOfPeriods = self::validateInt($numberOfPeriods);
+            $numberOfPeriods = CashFlowValidations::validateInt($numberOfPeriods);
-            $principleRemaining = self::validateFloat($principleRemaining);
+            $principleRemaining = CashFlowValidations::validateFloat($principleRemaining);
         } catch (Exception $e) {
             return $e->getMessage();
         }
 
+        // Validate parameters
         if ($period <= 0 || $period > $numberOfPeriods) {
             return Functions::NAN();
         }
+
         // Return value
         $returnValue = 0;
 
@@ -148,22 +152,28 @@ class Interest
      *
      * @return float|string
      */
-    public static function rate($numberOfPeriods, $payment, $presentValue, $futureValue = 0.0, $type = 0, $guess = 0.1)
+    public static function rate(
-    {
+        $numberOfPeriods,
+        $payment,
+        $presentValue,
+        $futureValue = 0.0,
+        $type = FinancialConstants::PAYMENT_END_OF_PERIOD,
+        $guess = 0.1
+    ) {
         $numberOfPeriods = Functions::flattenSingleValue($numberOfPeriods);
         $payment = Functions::flattenSingleValue($payment);
         $presentValue = Functions::flattenSingleValue($presentValue);
         $futureValue = ($futureValue === null) ? 0.0 : Functions::flattenSingleValue($futureValue);
-        $type = ($type === null) ? 0 : Functions::flattenSingleValue($type);
+        $type = ($type === null) ? FinancialConstants::PAYMENT_END_OF_PERIOD : Functions::flattenSingleValue($type);
         $guess = ($guess === null) ? 0.1 : Functions::flattenSingleValue($guess);
 
         try {
-            $numberOfPeriods = self::validateInt($numberOfPeriods);
+            $numberOfPeriods = CashFlowValidations::validateInt($numberOfPeriods);
-            $payment = self::validateFloat($payment);
+            $payment = CashFlowValidations::validateFloat($payment);
-            $presentValue = self::validateFloat($presentValue);
+            $presentValue = CashFlowValidations::validatePresentValue($presentValue);
-            $futureValue = self::validateFloat($futureValue);
+            $futureValue = CashFlowValidations::validateFutureValue($futureValue);
-            $type = self::validateInt($type);
+            $type = CashFlowValidations::validatePeriodType($type);
-            $guess = self::validateFloat($guess);
+            $guess = CashFlowValidations::validateFloat($guess);
         } catch (Exception $e) {
             return $e->getMessage();
         }
@@ -188,7 +198,7 @@ class Interest
 
     private static function rateNextGuess($rate, $numberOfPeriods, $payment, $presentValue, $futureValue, $type)
     {
-        if ($rate == 0) {
+        if ($rate == 0.0) {
             return Functions::NAN();
         }
         $tt1 = ($rate + 1) ** $numberOfPeriods;

src/PhpSpreadsheet/Calculation/Financial/CashFlow/Constant/Periodic/InterestAndPrincipal.php

@@ -2,6 +2,8 @@
 
 namespace PhpOffice\PhpSpreadsheet\Calculation\Financial\CashFlow\Constant\Periodic;
 
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
+
 class InterestAndPrincipal
 {
     protected $interest;
@@ -14,14 +16,14 @@ class InterestAndPrincipal
         int $numberOfPeriods = 0,
         float $presentValue = 0,
         float $futureValue = 0,
-        int $type = 0
+        int $type = FinancialConstants::PAYMENT_END_OF_PERIOD
     ) {
         $payment = Payments::annuity($rate, $numberOfPeriods, $presentValue, $futureValue, $type);
         $capital = $presentValue;
         $interest = 0.0;
         $principal = 0.0;
         for ($i = 1; $i <= $period; ++$i) {
-            $interest = ($type && $i == 1) ? 0 : -$capital * $rate;
+            $interest = ($type === FinancialConstants::PAYMENT_BEGINNING_OF_PERIOD && $i == 1) ? 0 : -$capital * $rate;
             $principal = $payment - $interest;
             $capital += $principal;
         }

src/PhpSpreadsheet/Calculation/Financial/CashFlow/Constant/Periodic/Payments.php

@@ -3,13 +3,12 @@
 namespace PhpOffice\PhpSpreadsheet\Calculation\Financial\CashFlow\Constant\Periodic;
 
 use PhpOffice\PhpSpreadsheet\Calculation\Exception;
-use PhpOffice\PhpSpreadsheet\Calculation\Financial\BaseValidations;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\CashFlow\CashFlowValidations;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 
 class Payments
 {
-    use BaseValidations;
-
     /**
      * PMT.
      *
@@ -23,29 +22,29 @@ class Payments
      *
      * @return float|string Result, or a string containing an error
      */
-    public static function annuity($interestRate, $numberOfPeriods, $presentValue, $futureValue = 0, $type = 0)
+    public static function annuity(
-    {
+        $interestRate,
+        $numberOfPeriods,
+        $presentValue,
+        $futureValue = 0,
+        $type = FinancialConstants::PAYMENT_END_OF_PERIOD
+    ) {
         $interestRate = Functions::flattenSingleValue($interestRate);
         $numberOfPeriods = Functions::flattenSingleValue($numberOfPeriods);
         $presentValue = Functions::flattenSingleValue($presentValue);
         $futureValue = ($futureValue === null) ? 0.0 : Functions::flattenSingleValue($futureValue);
-        $type = ($type === null) ? 0 : Functions::flattenSingleValue($type);
+        $type = ($type === null) ? FinancialConstants::PAYMENT_END_OF_PERIOD : Functions::flattenSingleValue($type);
 
         try {
-            $interestRate = self::validateFloat($interestRate);
+            $interestRate = CashFlowValidations::validateRate($interestRate);
-            $numberOfPeriods = self::validateInt($numberOfPeriods);
+            $numberOfPeriods = CashFlowValidations::validateInt($numberOfPeriods);
-            $presentValue = self::validateFloat($presentValue);
+            $presentValue = CashFlowValidations::validatePresentValue($presentValue);
-            $futureValue = self::validateFloat($futureValue);
+            $futureValue = CashFlowValidations::validateFutureValue($futureValue);
-            $type = self::validateInt($type);
+            $type = CashFlowValidations::validatePeriodType($type);
         } catch (Exception $e) {
             return $e->getMessage();
         }
 
-        // Validate parameters
-        if ($type != 0 && $type != 1) {
-            return Functions::NAN();
-        }
-
         // Calculate
         if ($interestRate != 0.0) {
             return (-$futureValue - $presentValue * (1 + $interestRate) ** $numberOfPeriods) /
@@ -76,30 +75,27 @@ class Payments
         $numberOfPeriods,
         $presentValue,
         $futureValue = 0,
-        $type = 0
+        $type = FinancialConstants::PAYMENT_END_OF_PERIOD
     ) {
         $interestRate = Functions::flattenSingleValue($interestRate);
         $period = Functions::flattenSingleValue($period);
         $numberOfPeriods = Functions::flattenSingleValue($numberOfPeriods);
         $presentValue = Functions::flattenSingleValue($presentValue);
         $futureValue = ($futureValue === null) ? 0.0 : Functions::flattenSingleValue($futureValue);
-        $type = ($type === null) ? 0 : Functions::flattenSingleValue($type);
+        $type = ($type === null) ? FinancialConstants::PAYMENT_END_OF_PERIOD : Functions::flattenSingleValue($type);
 
         try {
-            $interestRate = self::validateFloat($interestRate);
+            $interestRate = CashFlowValidations::validateRate($interestRate);
-            $period = self::validateInt($period);
+            $period = CashFlowValidations::validateInt($period);
-            $numberOfPeriods = self::validateInt($numberOfPeriods);
+            $numberOfPeriods = CashFlowValidations::validateInt($numberOfPeriods);
-            $presentValue = self::validateFloat($presentValue);
+            $presentValue = CashFlowValidations::validatePresentValue($presentValue);
-            $futureValue = self::validateFloat($futureValue);
+            $futureValue = CashFlowValidations::validateFutureValue($futureValue);
-            $type = self::validateInt($type);
+            $type = CashFlowValidations::validatePeriodType($type);
         } catch (Exception $e) {
             return $e->getMessage();
         }
 
         // Validate parameters
-        if ($type != 0 && $type != 1) {
-            return Functions::NAN();
-        }
         if ($period <= 0 || $period > $numberOfPeriods) {
             return Functions::NAN();
         }

src/PhpSpreadsheet/Calculation/Financial/CashFlow/Single.php

@@ -3,13 +3,10 @@
 namespace PhpOffice\PhpSpreadsheet\Calculation\Financial\CashFlow;
 
 use PhpOffice\PhpSpreadsheet\Calculation\Exception;
-use PhpOffice\PhpSpreadsheet\Calculation\Financial\BaseValidations;
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 
 class Single
 {
-    use BaseValidations;
-
     /**
      * FVSCHEDULE.
      *
@@ -30,10 +27,10 @@ class Single
         $schedule = Functions::flattenArray($schedule);
 
         try {
-            $principal = self::validateFloat($principal);
+            $principal = CashFlowValidations::validateFloat($principal);
 
             foreach ($schedule as $rate) {
-                $rate = self::validateFloat($rate);
+                $rate = CashFlowValidations::validateFloat($rate);
                 $principal *= 1 + $rate;
             }
         } catch (Exception $e) {
@@ -48,22 +45,22 @@ class Single
      *
      * Calculates the number of periods required for an investment to reach a specified value.
      *
-     * @param float $rate Interest rate per period
+     * @param mixed $rate Interest rate per period
-     * @param float $presentValue Present Value
+     * @param mixed $presentValue Present Value
-     * @param float $futureValue Future Value
+     * @param mixed $futureValue Future Value
      *
      * @return float|string Result, or a string containing an error
      */
-    public static function periods($rate = 0.0, $presentValue = 0.0, $futureValue = 0.0)
+    public static function periods($rate, $presentValue, $futureValue)
     {
         $rate = Functions::flattenSingleValue($rate);
         $presentValue = Functions::flattenSingleValue($presentValue);
         $futureValue = Functions::flattenSingleValue($futureValue);
 
         try {
-            $rate = self::validateFloat($rate);
+            $rate = CashFlowValidations::validateRate($rate);
-            $presentValue = self::validateFloat($presentValue);
+            $presentValue = CashFlowValidations::validatePresentValue($presentValue);
-            $futureValue = self::validateFloat($futureValue);
+            $futureValue = CashFlowValidations::validateFutureValue($futureValue);
         } catch (Exception $e) {
             return $e->getMessage();
         }
@@ -94,9 +91,9 @@ class Single
         $futureValue = Functions::flattenSingleValue($futureValue);
 
         try {
-            $periods = self::validateFloat($periods);
+            $periods = CashFlowValidations::validateFloat($periods);
-            $presentValue = self::validateFloat($presentValue);
+            $presentValue = CashFlowValidations::validatePresentValue($presentValue);
-            $futureValue = self::validateFloat($futureValue);
+            $futureValue = CashFlowValidations::validateFutureValue($futureValue);
         } catch (Exception $e) {
             return $e->getMessage();
         }

src/PhpSpreadsheet/Calculation/Financial/Constants.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation\Financial;
+
+class Constants
+{
+    public const BASIS_DAYS_PER_YEAR_NASD = 0;
+    public const BASIS_DAYS_PER_YEAR_ACTUAL = 1;
+    public const BASIS_DAYS_PER_YEAR_360 = 2;
+    public const BASIS_DAYS_PER_YEAR_365 = 3;
+    public const BASIS_DAYS_PER_YEAR_360_EUROPEAN = 4;
+
+    public const FREQUENCY_ANNUAL = 1;
+    public const FREQUENCY_SEMI_ANNUAL = 2;
+    public const FREQUENCY_QUARTERLY = 4;
+
+    public const PAYMENT_END_OF_PERIOD = 0;
+    public const PAYMENT_BEGINNING_OF_PERIOD = 1;
+}

src/PhpSpreadsheet/Calculation/Financial/Coupons.php

@@ -4,17 +4,12 @@ namespace PhpOffice\PhpSpreadsheet\Calculation\Financial;
 
 use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel;
 use PhpOffice\PhpSpreadsheet\Calculation\Exception;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 use PhpOffice\PhpSpreadsheet\Shared\Date;
 
 class Coupons
 {
-    use BaseValidations;
-
-    public const FREQUENCY_ANNUAL = 1;
-    public const FREQUENCY_SEMI_ANNUAL = 2;
-    public const FREQUENCY_QUARTERLY = 4;
-
     private const PERIOD_DATE_PREVIOUS = false;
     private const PERIOD_DATE_NEXT = true;
 
@@ -45,19 +40,25 @@ class Coupons
      *
      * @return float|string
      */
-    public static function COUPDAYBS($settlement, $maturity, $frequency, $basis = Helpers::DAYS_PER_YEAR_NASD)
+    public static function COUPDAYBS(
-    {
+        $settlement,
+        $maturity,
+        $frequency,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
         $settlement = Functions::flattenSingleValue($settlement);
         $maturity = Functions::flattenSingleValue($maturity);
         $frequency = Functions::flattenSingleValue($frequency);
-        $basis = ($basis === null) ? 0 : Functions::flattenSingleValue($basis);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
 
         try {
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = FinancialValidations::validateSettlementDate($settlement);
-            $maturity = self::validateMaturityDate($maturity);
+            $maturity = FinancialValidations::validateMaturityDate($maturity);
             self::validateCouponPeriod($settlement, $maturity);
-            $frequency = self::validateFrequency($frequency);
+            $frequency = FinancialValidations::validateFrequency($frequency);
-            $basis = self::validateBasis($basis);
+            $basis = FinancialValidations::validateBasis($basis);
         } catch (Exception $e) {
             return $e->getMessage();
         }
@@ -68,7 +69,7 @@ class Coupons
         }
         $prev = self::couponFirstPeriodDate($settlement, $maturity, $frequency, self::PERIOD_DATE_PREVIOUS);
 
-        if ($basis === Helpers::DAYS_PER_YEAR_ACTUAL) {
+        if ($basis === FinancialConstants::BASIS_DAYS_PER_YEAR_ACTUAL) {
             return abs(DateTimeExcel\Days::funcDays($prev, $settlement));
         }
 
@@ -102,30 +103,36 @@ class Coupons
      *
      * @return float|string
      */
-    public static function COUPDAYS($settlement, $maturity, $frequency, $basis = Helpers::DAYS_PER_YEAR_NASD)
+    public static function COUPDAYS(
-    {
+        $settlement,
+        $maturity,
+        $frequency,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
         $settlement = Functions::flattenSingleValue($settlement);
         $maturity = Functions::flattenSingleValue($maturity);
         $frequency = Functions::flattenSingleValue($frequency);
-        $basis = ($basis === null) ? 0 : Functions::flattenSingleValue($basis);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
 
         try {
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = FinancialValidations::validateSettlementDate($settlement);
-            $maturity = self::validateMaturityDate($maturity);
+            $maturity = FinancialValidations::validateMaturityDate($maturity);
             self::validateCouponPeriod($settlement, $maturity);
-            $frequency = self::validateFrequency($frequency);
+            $frequency = FinancialValidations::validateFrequency($frequency);
-            $basis = self::validateBasis($basis);
+            $basis = FinancialValidations::validateBasis($basis);
         } catch (Exception $e) {
             return $e->getMessage();
         }
 
         switch ($basis) {
-            case Helpers::DAYS_PER_YEAR_365:
+            case FinancialConstants::BASIS_DAYS_PER_YEAR_365:
                 // Actual/365
                 return 365 / $frequency;
-            case Helpers::DAYS_PER_YEAR_ACTUAL:
+            case FinancialConstants::BASIS_DAYS_PER_YEAR_ACTUAL:
                 // Actual/actual
-                if ($frequency == self::FREQUENCY_ANNUAL) {
+                if ($frequency == FinancialConstants::FREQUENCY_ANNUAL) {
                     $daysPerYear = Helpers::daysPerYear(DateTimeExcel\Year::funcYear($settlement), $basis);
 
                     return $daysPerYear / $frequency;
@@ -167,19 +174,25 @@ class Coupons
      *
      * @return float|string
      */
-    public static function COUPDAYSNC($settlement, $maturity, $frequency, $basis = Helpers::DAYS_PER_YEAR_NASD)
+    public static function COUPDAYSNC(
-    {
+        $settlement,
+        $maturity,
+        $frequency,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
         $settlement = Functions::flattenSingleValue($settlement);
         $maturity = Functions::flattenSingleValue($maturity);
         $frequency = Functions::flattenSingleValue($frequency);
-        $basis = ($basis === null) ? 0 : Functions::flattenSingleValue($basis);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
 
         try {
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = FinancialValidations::validateSettlementDate($settlement);
-            $maturity = self::validateMaturityDate($maturity);
+            $maturity = FinancialValidations::validateMaturityDate($maturity);
             self::validateCouponPeriod($settlement, $maturity);
-            $frequency = self::validateFrequency($frequency);
+            $frequency = FinancialValidations::validateFrequency($frequency);
-            $basis = self::validateBasis($basis);
+            $basis = FinancialValidations::validateBasis($basis);
         } catch (Exception $e) {
             return $e->getMessage();
         }
@@ -187,7 +200,7 @@ class Coupons
         $daysPerYear = Helpers::daysPerYear(DateTimeExcel\Year::funcYear($settlement), $basis);
         $next = self::couponFirstPeriodDate($settlement, $maturity, $frequency, self::PERIOD_DATE_NEXT);
 
-        if ($basis === Helpers::DAYS_PER_YEAR_NASD) {
+        if ($basis === FinancialConstants::BASIS_DAYS_PER_YEAR_NASD) {
             $settlementDate = Date::excelToDateTimeObject($settlement);
             $settlementEoM = Helpers::isLastDayOfMonth($settlementDate);
             if ($settlementEoM) {
@@ -226,19 +239,25 @@ class Coupons
      * @return mixed Excel date/time serial value, PHP date/time serial value or PHP date/time object,
      *                     depending on the value of the ReturnDateType flag
      */
-    public static function COUPNCD($settlement, $maturity, $frequency, $basis = Helpers::DAYS_PER_YEAR_NASD)
+    public static function COUPNCD(
-    {
+        $settlement,
+        $maturity,
+        $frequency,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
         $settlement = Functions::flattenSingleValue($settlement);
         $maturity = Functions::flattenSingleValue($maturity);
         $frequency = Functions::flattenSingleValue($frequency);
-        $basis = ($basis === null) ? 0 : Functions::flattenSingleValue($basis);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
 
         try {
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = FinancialValidations::validateSettlementDate($settlement);
-            $maturity = self::validateMaturityDate($maturity);
+            $maturity = FinancialValidations::validateMaturityDate($maturity);
             self::validateCouponPeriod($settlement, $maturity);
-            $frequency = self::validateFrequency($frequency);
+            $frequency = FinancialValidations::validateFrequency($frequency);
-            $basis = self::validateBasis($basis);
+            $basis = FinancialValidations::validateBasis($basis);
         } catch (Exception $e) {
             return $e->getMessage();
         }
@@ -274,19 +293,25 @@ class Coupons
      *
      * @return int|string
      */
-    public static function COUPNUM($settlement, $maturity, $frequency, $basis = Helpers::DAYS_PER_YEAR_NASD)
+    public static function COUPNUM(
-    {
+        $settlement,
+        $maturity,
+        $frequency,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
         $settlement = Functions::flattenSingleValue($settlement);
         $maturity = Functions::flattenSingleValue($maturity);
         $frequency = Functions::flattenSingleValue($frequency);
-        $basis = ($basis === null) ? 0 : Functions::flattenSingleValue($basis);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
 
         try {
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = FinancialValidations::validateSettlementDate($settlement);
-            $maturity = self::validateMaturityDate($maturity);
+            $maturity = FinancialValidations::validateMaturityDate($maturity);
             self::validateCouponPeriod($settlement, $maturity);
-            $frequency = self::validateFrequency($frequency);
+            $frequency = FinancialValidations::validateFrequency($frequency);
-            $basis = self::validateBasis($basis);
+            $basis = FinancialValidations::validateBasis($basis);
         } catch (Exception $e) {
             return $e->getMessage();
         }
@@ -294,7 +319,7 @@ class Coupons
         $yearsBetweenSettlementAndMaturity = DateTimeExcel\YearFrac::funcYearFrac(
             $settlement,
             $maturity,
-            Helpers::DAYS_PER_YEAR_NASD
+            FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
         );
 
         return (int) ceil($yearsBetweenSettlementAndMaturity * $frequency);
@@ -328,19 +353,25 @@ class Coupons
      * @return mixed Excel date/time serial value, PHP date/time serial value or PHP date/time object,
      *                     depending on the value of the ReturnDateType flag
      */
-    public static function COUPPCD($settlement, $maturity, $frequency, $basis = Helpers::DAYS_PER_YEAR_NASD)
+    public static function COUPPCD(
-    {
+        $settlement,
+        $maturity,
+        $frequency,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
         $settlement = Functions::flattenSingleValue($settlement);
         $maturity = Functions::flattenSingleValue($maturity);
         $frequency = Functions::flattenSingleValue($frequency);
-        $basis = ($basis === null) ? 0 : Functions::flattenSingleValue($basis);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
 
         try {
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = FinancialValidations::validateSettlementDate($settlement);
-            $maturity = self::validateMaturityDate($maturity);
+            $maturity = FinancialValidations::validateMaturityDate($maturity);
             self::validateCouponPeriod($settlement, $maturity);
-            $frequency = self::validateFrequency($frequency);
+            $frequency = FinancialValidations::validateFrequency($frequency);
-            $basis = self::validateBasis($basis);
+            $basis = FinancialValidations::validateBasis($basis);
         } catch (Exception $e) {
             return $e->getMessage();
         }

src/PhpSpreadsheet/Calculation/Financial/Depreciation.php

@@ -7,8 +7,6 @@ use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 
 class Depreciation
 {
-    use BaseValidations;
-
     /**
      * DB.
      *
@@ -127,7 +125,10 @@ class Depreciation
         $previousDepreciation = 0;
         $depreciation = 0;
         for ($per = 1; $per <= $period; ++$per) {
-            $depreciation = min(($cost - $previousDepreciation) * ($factor / $life), ($cost - $salvage - $previousDepreciation));
+            $depreciation = min(
+                ($cost - $previousDepreciation) * ($factor / $life),
+                ($cost - $salvage - $previousDepreciation)
+            );
             $previousDepreciation += $depreciation;
         }
 
@@ -205,7 +206,7 @@ class Depreciation
 
     private static function validateCost($cost, bool $negativeValueAllowed = false): float
     {
-        $cost = self::validateFloat($cost);
+        $cost = FinancialValidations::validateFloat($cost);
         if ($cost < 0.0 && $negativeValueAllowed === false) {
             throw new Exception(Functions::NAN());
         }
@@ -215,7 +216,7 @@ class Depreciation
 
     private static function validateSalvage($salvage, bool $negativeValueAllowed = false): float
     {
-        $salvage = self::validateFloat($salvage);
+        $salvage = FinancialValidations::validateFloat($salvage);
         if ($salvage < 0.0 && $negativeValueAllowed === false) {
             throw new Exception(Functions::NAN());
         }
@@ -225,7 +226,7 @@ class Depreciation
 
     private static function validateLife($life, bool $negativeValueAllowed = false): float
     {
-        $life = self::validateFloat($life);
+        $life = FinancialValidations::validateFloat($life);
         if ($life < 0.0 && $negativeValueAllowed === false) {
             throw new Exception(Functions::NAN());
         }
@@ -235,7 +236,7 @@ class Depreciation
 
     private static function validatePeriod($period, bool $negativeValueAllowed = false): float
     {
-        $period = self::validateFloat($period);
+        $period = FinancialValidations::validateFloat($period);
         if ($period <= 0.0 && $negativeValueAllowed === false) {
             throw new Exception(Functions::NAN());
         }
@@ -245,7 +246,7 @@ class Depreciation
 
     private static function validateMonth($month): int
     {
-        $month = self::validateInt($month);
+        $month = FinancialValidations::validateInt($month);
         if ($month < 1) {
             throw new Exception(Functions::NAN());
         }
@@ -255,7 +256,7 @@ class Depreciation
 
     private static function validateFactor($factor): float
     {
-        $factor = self::validateFloat($factor);
+        $factor = FinancialValidations::validateFloat($factor);
         if ($factor <= 0.0) {
             throw new Exception(Functions::NAN());
         }

src/PhpSpreadsheet/Calculation/Financial/FinancialValidations.php

@@ -1,20 +1,42 @@
 <?php
 
-namespace PhpOffice\PhpSpreadsheet\Calculation\Financial\Securities;
+namespace PhpOffice\PhpSpreadsheet\Calculation\Financial;
 
 use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel;
 use PhpOffice\PhpSpreadsheet\Calculation\Exception;
-use PhpOffice\PhpSpreadsheet\Calculation\Financial\Securities\Constants as SecuritiesConstants;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 
-trait BaseValidations
+class FinancialValidations
 {
-    protected static function validateDate($date)
+    /**
+     * @param mixed $date
+     */
+    public static function validateDate($date): float
     {
         return DateTimeExcel\Helpers::getDateValue($date);
     }
 
-    protected static function validateFloat($value): float
+    /**
+     * @param mixed $settlement
+     */
+    public static function validateSettlementDate($settlement): float
+    {
+        return self::validateDate($settlement);
+    }
+
+    /**
+     * @param mixed $maturity
+     */
+    public static function validateMaturityDate($maturity): float
+    {
+        return self::validateDate($maturity);
+    }
+
+    /**
+     * @param mixed $value
+     */
+    public static function validateFloat($value): float
     {
         if (!is_numeric($value)) {
             throw new Exception(Functions::VALUE());
@@ -23,29 +45,22 @@ trait BaseValidations
         return (float) $value;
     }
 
-    protected static function validateSettlementDate($settlement)
+    /**
+     * @param mixed $value
+     */
+    public static function validateInt($value): int
     {
-        return self::validateDate($settlement);
+        if (!is_numeric($value)) {
+            throw new Exception(Functions::VALUE());
         }
 
-    protected static function validateMaturityDate($maturity)
+        return (int) floor((float) $value);
-    {
-        return self::validateDate($maturity);
     }
 
-    protected static function validateIssueDate($issue)
+    /**
-    {
+     * @param mixed $rate
-        return self::validateDate($issue);
+     */
-    }
+    public static function validateRate($rate): float
-
-    protected static function validateSecurityPeriod($settlement, $maturity): void
-    {
-        if ($settlement >= $maturity) {
-            throw new Exception(Functions::NAN());
-        }
-    }
-
-    protected static function validateRate($rate): float
     {
         $rate = self::validateFloat($rate);
         if ($rate < 0.0) {
@@ -55,67 +70,16 @@ trait BaseValidations
         return $rate;
     }
 
-    protected static function validateParValue($parValue): float
+    /**
+     * @param mixed $frequency
+     */
+    public static function validateFrequency($frequency): int
     {
-        $parValue = self::validateFloat($parValue);
+        $frequency = self::validateInt($frequency);
-        if ($parValue < 0.0) {
-            throw new Exception(Functions::NAN());
-        }
-
-        return $parValue;
-    }
-
-    protected static function validatePrice($price): float
-    {
-        $price = self::validateFloat($price);
-        if ($price < 0.0) {
-            throw new Exception(Functions::NAN());
-        }
-
-        return $price;
-    }
-
-    protected static function validateYield($yield): float
-    {
-        $yield = self::validateFloat($yield);
-        if ($yield < 0.0) {
-            throw new Exception(Functions::NAN());
-        }
-
-        return $yield;
-    }
-
-    protected static function validateRedemption($redemption): float
-    {
-        $redemption = self::validateFloat($redemption);
-        if ($redemption <= 0.0) {
-            throw new Exception(Functions::NAN());
-        }
-
-        return $redemption;
-    }
-
-    protected static function validateDiscount($discount): float
-    {
-        $discount = self::validateFloat($discount);
-        if ($discount <= 0.0) {
-            throw new Exception(Functions::NAN());
-        }
-
-        return $discount;
-    }
-
-    protected static function validateFrequency($frequency): int
-    {
-        if (!is_numeric($frequency)) {
-            throw new Exception(Functions::VALUE());
-        }
-
-        $frequency = (int) $frequency;
         if (
-            ($frequency !== SecuritiesConstants::FREQUENCY_ANNUAL) &&
+            ($frequency !== FinancialConstants::FREQUENCY_ANNUAL) &&
-            ($frequency !== SecuritiesConstants::FREQUENCY_SEMI_ANNUAL) &&
+            ($frequency !== FinancialConstants::FREQUENCY_SEMI_ANNUAL) &&
-            ($frequency !== SecuritiesConstants::FREQUENCY_QUARTERLY)
+            ($frequency !== FinancialConstants::FREQUENCY_QUARTERLY)
         ) {
             throw new Exception(Functions::NAN());
         }
@@ -123,7 +87,10 @@ trait BaseValidations
         return $frequency;
     }
 
-    protected static function validateBasis($basis): int
+    /**
+     * @param mixed $basis
+     */
+    public static function validateBasis($basis): int
     {
         if (!is_numeric($basis)) {
             throw new Exception(Functions::VALUE());
@@ -136,4 +103,56 @@ trait BaseValidations
 
         return $basis;
     }
+
+    /**
+     * @param mixed $price
+     */
+    public static function validatePrice($price): float
+    {
+        $price = self::validateFloat($price);
+        if ($price < 0.0) {
+            throw new Exception(Functions::NAN());
+        }
+
+        return $price;
+    }
+
+    /**
+     * @param mixed $parValue
+     */
+    public static function validateParValue($parValue): float
+    {
+        $parValue = self::validateFloat($parValue);
+        if ($parValue < 0.0) {
+            throw new Exception(Functions::NAN());
+        }
+
+        return $parValue;
+    }
+
+    /**
+     * @param mixed $yield
+     */
+    public static function validateYield($yield): float
+    {
+        $yield = self::validateFloat($yield);
+        if ($yield < 0.0) {
+            throw new Exception(Functions::NAN());
+        }
+
+        return $yield;
+    }
+
+    /**
+     * @param mixed $discount
+     */
+    public static function validateDiscount($discount): float
+    {
+        $discount = self::validateFloat($discount);
+        if ($discount <= 0.0) {
+            throw new Exception(Functions::NAN());
+        }
+
+        return $discount;
+    }
 }

src/PhpSpreadsheet/Calculation/Financial/Helpers.php

@@ -4,16 +4,11 @@ namespace PhpOffice\PhpSpreadsheet\Calculation\Financial;
 
 use DateTimeInterface;
 use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 
 class Helpers
 {
-    public const DAYS_PER_YEAR_NASD = 0;
-    public const DAYS_PER_YEAR_ACTUAL = 1;
-    public const DAYS_PER_YEAR_360 = 2;
-    public const DAYS_PER_YEAR_365 = 3;
-    public const DAYS_PER_YEAR_360_EUROPEAN = 4;
-
     /**
      * daysPerYear.
      *
@@ -36,13 +31,13 @@ class Helpers
         }
 
         switch ($basis) {
-            case self::DAYS_PER_YEAR_NASD:
+            case FinancialConstants::BASIS_DAYS_PER_YEAR_NASD:
-            case self::DAYS_PER_YEAR_360:
+            case FinancialConstants::BASIS_DAYS_PER_YEAR_360:
-            case self::DAYS_PER_YEAR_360_EUROPEAN:
+            case FinancialConstants::BASIS_DAYS_PER_YEAR_360_EUROPEAN:
                 return 360;
-            case self::DAYS_PER_YEAR_365:
+            case FinancialConstants::BASIS_DAYS_PER_YEAR_365:
                 return 365;
-            case self::DAYS_PER_YEAR_ACTUAL:
+            case FinancialConstants::BASIS_DAYS_PER_YEAR_ACTUAL:
                 return (DateTimeExcel\Helpers::isLeapYear($year)) ? 366 : 365;
         }
 
@@ -55,10 +50,8 @@ class Helpers
      * Returns a boolean TRUE/FALSE indicating if this date is the last date of the month
      *
      * @param DateTimeInterface $date The date for testing
-     *
-     * @return bool
      */
-    public static function isLastDayOfMonth(DateTimeInterface $date)
+    public static function isLastDayOfMonth(DateTimeInterface $date): bool
     {
         return $date->format('d') === $date->format('t');
     }

src/PhpSpreadsheet/Calculation/Financial/InterestRate.php

@@ -7,8 +7,6 @@ use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 
 class InterestRate
 {
-    use BaseValidations;
-
     /**
      * EFFECT.
      *
@@ -29,8 +27,8 @@ class InterestRate
         $periodsPerYear = Functions::flattenSingleValue($periodsPerYear);
 
         try {
-            $nominalRate = self::validateFloat($nominalRate);
+            $nominalRate = FinancialValidations::validateFloat($nominalRate);
-            $periodsPerYear = self::validateInt($periodsPerYear);
+            $periodsPerYear = FinancialValidations::validateInt($periodsPerYear);
         } catch (Exception $e) {
             return $e->getMessage();
         }
@@ -58,8 +56,8 @@ class InterestRate
         $periodsPerYear = Functions::flattenSingleValue($periodsPerYear);
 
         try {
-            $effectiveRate = self::validateFloat($effectiveRate);
+            $effectiveRate = FinancialValidations::validateFloat($effectiveRate);
-            $periodsPerYear = self::validateInt($periodsPerYear);
+            $periodsPerYear = FinancialValidations::validateInt($periodsPerYear);
         } catch (Exception $e) {
             return $e->getMessage();
         }

src/PhpSpreadsheet/Calculation/Financial/Securities/AccruedInterest.php

@@ -4,12 +4,11 @@ namespace PhpOffice\PhpSpreadsheet\Calculation\Financial\Securities;
 
 use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel\YearFrac;
 use PhpOffice\PhpSpreadsheet\Calculation\Exception;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 
 class AccruedInterest
 {
-    use BaseValidations;
-
     public const ACCRINT_CALCMODE_ISSUE_TO_SETTLEMENT = true;
 
     public const ACCRINT_CALCMODE_FIRST_INTEREST_TO_SETTLEMENT = false;
@@ -23,7 +22,7 @@ class AccruedInterest
      *        ACCRINT(issue,firstinterest,settlement,rate,par,frequency[,basis][,calc_method])
      *
      * @param mixed $issue the security's issue date
-     * @param mixed $firstinterest the security's first interest date
+     * @param mixed $firstInterest the security's first interest date
      * @param mixed $settlement The security's settlement date.
      *                              The security settlement date is the date after the issue date
      *                                  when the security is traded to the buyer.
@@ -47,30 +46,34 @@ class AccruedInterest
      */
     public static function periodic(
         $issue,
-        $firstinterest,
+        $firstInterest,
         $settlement,
         $rate,
         $parValue = 1000,
-        $frequency = 1,
+        $frequency = FinancialConstants::FREQUENCY_ANNUAL,
-        $basis = 0,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD,
         $calcMethod = self::ACCRINT_CALCMODE_ISSUE_TO_SETTLEMENT
     ) {
         $issue = Functions::flattenSingleValue($issue);
-        $firstinterest = Functions::flattenSingleValue($firstinterest);
+        $firstInterest = Functions::flattenSingleValue($firstInterest);
         $settlement = Functions::flattenSingleValue($settlement);
         $rate = Functions::flattenSingleValue($rate);
         $parValue = ($parValue === null) ? 1000 : Functions::flattenSingleValue($parValue);
-        $frequency = ($frequency === null) ? 1 : Functions::flattenSingleValue($frequency);
+        $frequency = ($frequency === null)
-        $basis = ($basis === null) ? 0 : Functions::flattenSingleValue($basis);
+            ? FinancialConstants::FREQUENCY_ANNUAL
+            : Functions::flattenSingleValue($frequency);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
 
         try {
-            $issue = self::validateIssueDate($issue);
+            $issue = SecurityValidations::validateIssueDate($issue);
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = SecurityValidations::validateSettlementDate($settlement);
-            self::validateSecurityPeriod($issue, $settlement);
+            SecurityValidations::validateSecurityPeriod($issue, $settlement);
-            $rate = self::validateRate($rate);
+            $rate = SecurityValidations::validateRate($rate);
-            $parValue = self::validateParValue($parValue);
+            $parValue = SecurityValidations::validateParValue($parValue);
-            $frequency = self::validateFrequency($frequency);
+            $frequency = SecurityValidations::validateFrequency($frequency);
-            $basis = self::validateBasis($basis);
+            $basis = SecurityValidations::validateBasis($basis);
         } catch (Exception $e) {
             return $e->getMessage();
         }
@@ -80,7 +83,7 @@ class AccruedInterest
             //    return date error
             return $daysBetweenIssueAndSettlement;
         }
-        $daysBetweenFirstInterestAndSettlement = YearFrac::funcYearFrac($firstinterest, $settlement, $basis);
+        $daysBetweenFirstInterestAndSettlement = YearFrac::funcYearFrac($firstInterest, $settlement, $basis);
         if (!is_numeric($daysBetweenFirstInterestAndSettlement)) {
             //    return date error
             return $daysBetweenFirstInterestAndSettlement;
@@ -101,7 +104,7 @@ class AccruedInterest
      * @param mixed $settlement The security's settlement (or maturity) date
      * @param mixed $rate The security's annual coupon rate
      * @param mixed $parValue The security's par value.
-     *                            If you omit par, ACCRINT uses $1,000.
+     *                            If you omit parValue, ACCRINT uses $1,000.
      * @param mixed $basis The type of day count to use.
      *                         0 or omitted    US (NASD) 30/360
      *                         1               Actual/actual
@@ -111,21 +114,28 @@ class AccruedInterest
      *
      * @return float|string Result, or a string containing an error
      */
-    public static function atMaturity($issue, $settlement, $rate, $parValue = 1000, $basis = 0)
+    public static function atMaturity(
-    {
+        $issue,
+        $settlement,
+        $rate,
+        $parValue = 1000,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
         $issue = Functions::flattenSingleValue($issue);
         $settlement = Functions::flattenSingleValue($settlement);
         $rate = Functions::flattenSingleValue($rate);
         $parValue = ($parValue === null) ? 1000 : Functions::flattenSingleValue($parValue);
-        $basis = ($basis === null) ? 0 : Functions::flattenSingleValue($basis);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
 
         try {
-            $issue = self::validateIssueDate($issue);
+            $issue = SecurityValidations::validateIssueDate($issue);
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = SecurityValidations::validateSettlementDate($settlement);
-            self::validateSecurityPeriod($issue, $settlement);
+            SecurityValidations::validateSecurityPeriod($issue, $settlement);
-            $rate = self::validateRate($rate);
+            $rate = SecurityValidations::validateRate($rate);
-            $parValue = self::validateParValue($parValue);
+            $parValue = SecurityValidations::validateParValue($parValue);
-            $basis = self::validateBasis($basis);
+            $basis = SecurityValidations::validateBasis($basis);
         } catch (Exception $e) {
             return $e->getMessage();
         }

src/PhpSpreadsheet/Calculation/Financial/Securities/Constants.php

@@ -1,13 +0,0 @@
-<?php
-
-namespace PhpOffice\PhpSpreadsheet\Calculation\Financial\Securities;
-
-class Constants
-{
-    public const FREQUENCY_ANNUAL = 1;
-    public const FREQUENCY_SEMI_ANNUAL = 2;
-    public const FREQUENCY_QUARTERLY = 4;
-
-    public const END_OF_PERIOD = 0;
-    public const BEGINNING_OF_PERIOD = 1;
-}

src/PhpSpreadsheet/Calculation/Financial/Securities/Price.php

@@ -4,14 +4,13 @@ namespace PhpOffice\PhpSpreadsheet\Calculation\Financial\Securities;
 
 use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel;
 use PhpOffice\PhpSpreadsheet\Calculation\Exception;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
 use PhpOffice\PhpSpreadsheet\Calculation\Financial\Coupons;
 use PhpOffice\PhpSpreadsheet\Calculation\Financial\Helpers;
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 
 class Price
 {
-    use BaseValidations;
-
     /**
      * PRICE.
      *
@@ -38,25 +37,34 @@ class Price
      *
      * @return float|string Result, or a string containing an error
      */
-    public static function price($settlement, $maturity, $rate, $yield, $redemption, $frequency, $basis = 0)
+    public static function price(
-    {
+        $settlement,
+        $maturity,
+        $rate,
+        $yield,
+        $redemption,
+        $frequency,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
         $settlement = Functions::flattenSingleValue($settlement);
         $maturity = Functions::flattenSingleValue($maturity);
         $rate = Functions::flattenSingleValue($rate);
         $yield = Functions::flattenSingleValue($yield);
         $redemption = Functions::flattenSingleValue($redemption);
         $frequency = Functions::flattenSingleValue($frequency);
-        $basis = Functions::flattenSingleValue($basis);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
 
         try {
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = SecurityValidations::validateSettlementDate($settlement);
-            $maturity = self::validateMaturityDate($maturity);
+            $maturity = SecurityValidations::validateMaturityDate($maturity);
-            self::validateSecurityPeriod($settlement, $maturity);
+            SecurityValidations::validateSecurityPeriod($settlement, $maturity);
-            $rate = self::validateRate($rate);
+            $rate = SecurityValidations::validateRate($rate);
-            $yield = self::validateYield($yield);
+            $yield = SecurityValidations::validateYield($yield);
-            $redemption = self::validateRedemption($redemption);
+            $redemption = SecurityValidations::validateRedemption($redemption);
-            $frequency = self::validateFrequency($frequency);
+            $frequency = SecurityValidations::validateFrequency($frequency);
-            $basis = self::validateBasis($basis);
+            $basis = SecurityValidations::validateBasis($basis);
         } catch (Exception $e) {
             return $e->getMessage();
         }
@@ -100,21 +108,28 @@ class Price
      *
      * @return float|string Result, or a string containing an error
      */
-    public static function priceDiscounted($settlement, $maturity, $discount, $redemption, $basis = 0)
+    public static function priceDiscounted(
-    {
+        $settlement,
+        $maturity,
+        $discount,
+        $redemption,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
         $settlement = Functions::flattenSingleValue($settlement);
         $maturity = Functions::flattenSingleValue($maturity);
         $discount = Functions::flattenSingleValue($discount);
         $redemption = Functions::flattenSingleValue($redemption);
-        $basis = Functions::flattenSingleValue($basis);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
 
         try {
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = SecurityValidations::validateSettlementDate($settlement);
-            $maturity = self::validateMaturityDate($maturity);
+            $maturity = SecurityValidations::validateMaturityDate($maturity);
-            self::validateSecurityPeriod($settlement, $maturity);
+            SecurityValidations::validateSecurityPeriod($settlement, $maturity);
-            $discount = self::validateDiscount($discount);
+            $discount = SecurityValidations::validateDiscount($discount);
-            $redemption = self::validateRedemption($redemption);
+            $redemption = SecurityValidations::validateRedemption($redemption);
-            $basis = self::validateBasis($basis);
+            $basis = SecurityValidations::validateBasis($basis);
         } catch (Exception $e) {
             return $e->getMessage();
         }
@@ -150,23 +165,31 @@ class Price
      *
      * @return float|string Result, or a string containing an error
      */
-    public static function priceAtMaturity($settlement, $maturity, $issue, $rate, $yield, $basis = 0)
+    public static function priceAtMaturity(
-    {
+        $settlement,
+        $maturity,
+        $issue,
+        $rate,
+        $yield,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
         $settlement = Functions::flattenSingleValue($settlement);
         $maturity = Functions::flattenSingleValue($maturity);
         $issue = Functions::flattenSingleValue($issue);
         $rate = Functions::flattenSingleValue($rate);
         $yield = Functions::flattenSingleValue($yield);
-        $basis = Functions::flattenSingleValue($basis);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
 
         try {
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = SecurityValidations::validateSettlementDate($settlement);
-            $maturity = self::validateMaturityDate($maturity);
+            $maturity = SecurityValidations::validateMaturityDate($maturity);
-            self::validateSecurityPeriod($settlement, $maturity);
+            SecurityValidations::validateSecurityPeriod($settlement, $maturity);
-            $issue = self::validateIssueDate($issue);
+            $issue = SecurityValidations::validateIssueDate($issue);
-            $rate = self::validateRate($rate);
+            $rate = SecurityValidations::validateRate($rate);
-            $yield = self::validateYield($yield);
+            $yield = SecurityValidations::validateYield($yield);
-            $basis = self::validateBasis($basis);
+            $basis = SecurityValidations::validateBasis($basis);
         } catch (Exception $e) {
             return $e->getMessage();
         }
@@ -198,4 +221,63 @@ class Price
             (1 + (($daysBetweenSettlementAndMaturity / $daysPerYear) * $yield)) -
             (($daysBetweenIssueAndSettlement / $daysPerYear) * $rate * 100);
     }
+
+    /**
+     * RECEIVED.
+     *
+     * Returns the amount received at maturity for a fully invested Security.
+     *
+     * @param mixed $settlement The security's settlement date.
+     *                              The security settlement date is the date after the issue date when the security
+     *                                  is traded to the buyer.
+     * @param mixed $maturity The security's maturity date.
+     *                            The maturity date is the date when the security expires.
+     * @param mixed $investment The amount invested in the security
+     * @param mixed $discount The security's discount rate
+     * @param mixed $basis The type of day count to use.
+     *                         0 or omitted    US (NASD) 30/360
+     *                         1               Actual/actual
+     *                         2               Actual/360
+     *                         3               Actual/365
+     *                         4               European 30/360
+     *
+     * @return float|string Result, or a string containing an error
+     */
+    public static function received(
+        $settlement,
+        $maturity,
+        $investment,
+        $discount,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
+        $settlement = Functions::flattenSingleValue($settlement);
+        $maturity = Functions::flattenSingleValue($maturity);
+        $investment = Functions::flattenSingleValue($investment);
+        $discount = Functions::flattenSingleValue($discount);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
+
+        try {
+            $settlement = SecurityValidations::validateSettlementDate($settlement);
+            $maturity = SecurityValidations::validateMaturityDate($maturity);
+            SecurityValidations::validateSecurityPeriod($settlement, $maturity);
+            $investment = SecurityValidations::validateFloat($investment);
+            $discount = SecurityValidations::validateDiscount($discount);
+            $basis = SecurityValidations::validateBasis($basis);
+        } catch (Exception $e) {
+            return $e->getMessage();
+        }
+
+        if ($investment <= 0) {
+            return Functions::NAN();
+        }
+        $daysBetweenSettlementAndMaturity = DateTimeExcel\YearFrac::funcYearFrac($settlement, $maturity, $basis);
+        if (!is_numeric($daysBetweenSettlementAndMaturity)) {
+            //    return date error
+            return $daysBetweenSettlementAndMaturity;
+        }
+
+        return $investment / (1 - ($discount * $daysBetweenSettlementAndMaturity));
+    }
 }

src/PhpSpreadsheet/Calculation/Financial/Securities/Rates.php

@@ -0,0 +1,137 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation\Financial\Securities;
+
+use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel;
+use PhpOffice\PhpSpreadsheet\Calculation\Exception;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
+use PhpOffice\PhpSpreadsheet\Calculation\Functions;
+
+class Rates
+{
+    /**
+     * DISC.
+     *
+     * Returns the discount rate for a security.
+     *
+     * Excel Function:
+     *        DISC(settlement,maturity,price,redemption[,basis])
+     *
+     * @param mixed $settlement The security's settlement date.
+     *                              The security settlement date is the date after the issue
+     *                                  date when the security is traded to the buyer.
+     * @param mixed $maturity The security's maturity date.
+     *                            The maturity date is the date when the security expires.
+     * @param mixed $price The security's price per $100 face value
+     * @param mixed $redemption The security's redemption value per $100 face value
+     * @param mixed $basis The type of day count to use.
+     *                         0 or omitted    US (NASD) 30/360
+     *                         1               Actual/actual
+     *                         2               Actual/360
+     *                         3               Actual/365
+     *                         4               European 30/360
+     *
+     * @return float|string
+     */
+    public static function discount(
+        $settlement,
+        $maturity,
+        $price,
+        $redemption,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
+        $settlement = Functions::flattenSingleValue($settlement);
+        $maturity = Functions::flattenSingleValue($maturity);
+        $price = Functions::flattenSingleValue($price);
+        $redemption = Functions::flattenSingleValue($redemption);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
+
+        try {
+            $settlement = SecurityValidations::validateSettlementDate($settlement);
+            $maturity = SecurityValidations::validateMaturityDate($maturity);
+            SecurityValidations::validateSecurityPeriod($settlement, $maturity);
+            $price = SecurityValidations::validatePrice($price);
+            $redemption = SecurityValidations::validateRedemption($redemption);
+            $basis = SecurityValidations::validateBasis($basis);
+        } catch (Exception $e) {
+            return $e->getMessage();
+        }
+
+        if ($price <= 0.0) {
+            return Functions::NAN();
+        }
+
+        $daysBetweenSettlementAndMaturity = DateTimeExcel\YearFrac::funcYearFrac($settlement, $maturity, $basis);
+        if (!is_numeric($daysBetweenSettlementAndMaturity)) {
+            //    return date error
+            return $daysBetweenSettlementAndMaturity;
+        }
+
+        return (1 - $price / $redemption) / $daysBetweenSettlementAndMaturity;
+    }
+
+    /**
+     * INTRATE.
+     *
+     * Returns the interest rate for a fully invested security.
+     *
+     * Excel Function:
+     *        INTRATE(settlement,maturity,investment,redemption[,basis])
+     *
+     * @param mixed $settlement The security's settlement date.
+     *                              The security settlement date is the date after the issue date when the security
+     *                                  is traded to the buyer.
+     * @param mixed $maturity The security's maturity date.
+     *                            The maturity date is the date when the security expires.
+     * @param mixed $investment the amount invested in the security
+     * @param mixed $redemption the amount to be received at maturity
+     * @param mixed $basis The type of day count to use.
+     *                         0 or omitted    US (NASD) 30/360
+     *                         1               Actual/actual
+     *                         2               Actual/360
+     *                         3               Actual/365
+     *                         4               European 30/360
+     *
+     * @return float|string
+     */
+    public static function interest(
+        $settlement,
+        $maturity,
+        $investment,
+        $redemption,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
+        $settlement = Functions::flattenSingleValue($settlement);
+        $maturity = Functions::flattenSingleValue($maturity);
+        $investment = Functions::flattenSingleValue($investment);
+        $redemption = Functions::flattenSingleValue($redemption);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
+
+        try {
+            $settlement = SecurityValidations::validateSettlementDate($settlement);
+            $maturity = SecurityValidations::validateMaturityDate($maturity);
+            SecurityValidations::validateSecurityPeriod($settlement, $maturity);
+            $investment = SecurityValidations::validateFloat($investment);
+            $redemption = SecurityValidations::validateRedemption($redemption);
+            $basis = SecurityValidations::validateBasis($basis);
+        } catch (Exception $e) {
+            return $e->getMessage();
+        }
+
+        if ($investment <= 0) {
+            return Functions::NAN();
+        }
+
+        $daysBetweenSettlementAndMaturity = DateTimeExcel\YearFrac::funcYearFrac($settlement, $maturity, $basis);
+        if (!is_numeric($daysBetweenSettlementAndMaturity)) {
+            //    return date error
+            return $daysBetweenSettlementAndMaturity;
+        }
+
+        return (($redemption / $investment) - 1) / ($daysBetweenSettlementAndMaturity);
+    }
+}

src/PhpSpreadsheet/Calculation/Financial/Securities/SecurityValidations.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation\Financial\Securities;
+
+use PhpOffice\PhpSpreadsheet\Calculation\Exception;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\FinancialValidations;
+use PhpOffice\PhpSpreadsheet\Calculation\Functions;
+
+class SecurityValidations extends FinancialValidations
+{
+    /**
+     * @param mixed $issue
+     */
+    public static function validateIssueDate($issue): float
+    {
+        return self::validateDate($issue);
+    }
+
+    /**
+     * @param mixed $settlement
+     * @param mixed $maturity
+     */
+    public static function validateSecurityPeriod($settlement, $maturity): void
+    {
+        if ($settlement >= $maturity) {
+            throw new Exception(Functions::NAN());
+        }
+    }
+
+    /**
+     * @param mixed $redemption
+     */
+    public static function validateRedemption($redemption): float
+    {
+        $redemption = self::validateFloat($redemption);
+        if ($redemption <= 0.0) {
+            throw new Exception(Functions::NAN());
+        }
+
+        return $redemption;
+    }
+}

src/PhpSpreadsheet/Calculation/Financial/Securities/Yields.php

@@ -4,13 +4,12 @@ namespace PhpOffice\PhpSpreadsheet\Calculation\Financial\Securities;
 
 use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel;
 use PhpOffice\PhpSpreadsheet\Calculation\Exception;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
 use PhpOffice\PhpSpreadsheet\Calculation\Financial\Helpers;
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 
 class Yields
 {
-    use BaseValidations;
-
     /**
      * YIELDDISC.
      *
@@ -21,9 +20,9 @@ class Yields
      *                              is traded to the buyer.
      * @param mixed $maturity The security's maturity date.
      *                            The maturity date is the date when the security expires.
-     * @param int $price The security's price per $100 face value
+     * @param mixed $price The security's price per $100 face value
-     * @param int $redemption The security's redemption value per $100 face value
+     * @param mixed $redemption The security's redemption value per $100 face value
-     * @param int $basis The type of day count to use.
+     * @param mixed $basis The type of day count to use.
      *                       0 or omitted    US (NASD) 30/360
      *                       1               Actual/actual
      *                       2               Actual/360
@@ -32,21 +31,28 @@ class Yields
      *
      * @return float|string Result, or a string containing an error
      */
-    public static function yieldDiscounted($settlement, $maturity, $price, $redemption, $basis = 0)
+    public static function yieldDiscounted(
-    {
+        $settlement,
+        $maturity,
+        $price,
+        $redemption,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
         $settlement = Functions::flattenSingleValue($settlement);
         $maturity = Functions::flattenSingleValue($maturity);
         $price = Functions::flattenSingleValue($price);
         $redemption = Functions::flattenSingleValue($redemption);
-        $basis = (int) Functions::flattenSingleValue($basis);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
 
         try {
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = SecurityValidations::validateSettlementDate($settlement);
-            $maturity = self::validateMaturityDate($maturity);
+            $maturity = SecurityValidations::validateMaturityDate($maturity);
-            self::validateSecurityPeriod($settlement, $maturity);
+            SecurityValidations::validateSecurityPeriod($settlement, $maturity);
-            $price = self::validatePrice($price);
+            $price = SecurityValidations::validatePrice($price);
-            $redemption = self::validateRedemption($redemption);
+            $redemption = SecurityValidations::validateRedemption($redemption);
-            $basis = self::validateBasis($basis);
+            $basis = SecurityValidations::validateBasis($basis);
         } catch (Exception $e) {
             return $e->getMessage();
         }
@@ -76,9 +82,9 @@ class Yields
      * @param mixed $maturity The security's maturity date.
      *                            The maturity date is the date when the security expires.
      * @param mixed $issue The security's issue date
-     * @param int $rate The security's interest rate at date of issue
+     * @param mixed $rate The security's interest rate at date of issue
-     * @param int $price The security's price per $100 face value
+     * @param mixed $price The security's price per $100 face value
-     * @param int $basis The type of day count to use.
+     * @param mixed $basis The type of day count to use.
      *                       0 or omitted    US (NASD) 30/360
      *                       1               Actual/actual
      *                       2               Actual/360
@@ -87,23 +93,31 @@ class Yields
      *
      * @return float|string Result, or a string containing an error
      */
-    public static function yieldAtMaturity($settlement, $maturity, $issue, $rate, $price, $basis = 0)
+    public static function yieldAtMaturity(
-    {
+        $settlement,
+        $maturity,
+        $issue,
+        $rate,
+        $price,
+        $basis = FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+    ) {
         $settlement = Functions::flattenSingleValue($settlement);
         $maturity = Functions::flattenSingleValue($maturity);
         $issue = Functions::flattenSingleValue($issue);
         $rate = Functions::flattenSingleValue($rate);
         $price = Functions::flattenSingleValue($price);
-        $basis = Functions::flattenSingleValue($basis);
+        $basis = ($basis === null)
+            ? FinancialConstants::BASIS_DAYS_PER_YEAR_NASD
+            : Functions::flattenSingleValue($basis);
 
         try {
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = SecurityValidations::validateSettlementDate($settlement);
-            $maturity = self::validateMaturityDate($maturity);
+            $maturity = SecurityValidations::validateMaturityDate($maturity);
-            self::validateSecurityPeriod($settlement, $maturity);
+            SecurityValidations::validateSecurityPeriod($settlement, $maturity);
-            $issue = self::validateIssueDate($issue);
+            $issue = SecurityValidations::validateIssueDate($issue);
-            $rate = self::validateRate($rate);
+            $rate = SecurityValidations::validateRate($rate);
-            $price = self::validatePrice($price);
+            $price = SecurityValidations::validatePrice($price);
-            $basis = self::validateBasis($basis);
+            $basis = SecurityValidations::validateBasis($basis);
         } catch (Exception $e) {
             return $e->getMessage();
         }
@@ -131,7 +145,8 @@ class Yields
         }
         $daysBetweenSettlementAndMaturity *= $daysPerYear;
 
-        return ((1 + (($daysBetweenIssueAndMaturity / $daysPerYear) * $rate) - (($price / 100) + (($daysBetweenIssueAndSettlement / $daysPerYear) * $rate))) /
+        return ((1 + (($daysBetweenIssueAndMaturity / $daysPerYear) * $rate) -
+                    (($price / 100) + (($daysBetweenIssueAndSettlement / $daysPerYear) * $rate))) /
                 (($price / 100) + (($daysBetweenIssueAndSettlement / $daysPerYear) * $rate))) *
             ($daysPerYear / $daysBetweenSettlementAndMaturity);
     }

src/PhpSpreadsheet/Calculation/Financial/TreasuryBill.php

@@ -4,12 +4,11 @@ namespace PhpOffice\PhpSpreadsheet\Calculation\Financial;
 
 use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel;
 use PhpOffice\PhpSpreadsheet\Calculation\Exception;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 
 class TreasuryBill
 {
-    use BaseValidations;
-
     /**
      * TBILLEQ.
      *
@@ -31,20 +30,22 @@ class TreasuryBill
         $discount = Functions::flattenSingleValue($discount);
 
         try {
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = FinancialValidations::validateSettlementDate($settlement);
-            $maturity = self::validateMaturityDate($maturity);
+            $maturity = FinancialValidations::validateMaturityDate($maturity);
+            $discount = FinancialValidations::validateFloat($discount);
         } catch (Exception $e) {
             return $e->getMessage();
         }
 
-        //    Validate
-        if (is_numeric($discount)) {
         if ($discount <= 0) {
             return Functions::NAN();
         }
 
         $daysBetweenSettlementAndMaturity = $maturity - $settlement;
-            $daysPerYear = Helpers::daysPerYear(DateTimeExcel\Year::funcYear($maturity), Helpers::DAYS_PER_YEAR_ACTUAL);
+        $daysPerYear = Helpers::daysPerYear(
+            DateTimeExcel\Year::funcYear($maturity),
+            FinancialConstants::BASIS_DAYS_PER_YEAR_ACTUAL
+        );
 
         if ($daysBetweenSettlementAndMaturity > $daysPerYear || $daysBetweenSettlementAndMaturity < 0) {
             return Functions::NAN();
@@ -53,9 +54,6 @@ class TreasuryBill
         return (365 * $discount) / (360 - $discount * $daysBetweenSettlementAndMaturity);
     }
 
-        return Functions::VALUE();
-    }
-
     /**
      * TBILLPRICE.
      *
@@ -77,20 +75,22 @@ class TreasuryBill
         $discount = Functions::flattenSingleValue($discount);
 
         try {
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = FinancialValidations::validateSettlementDate($settlement);
-            $maturity = self::validateMaturityDate($maturity);
+            $maturity = FinancialValidations::validateMaturityDate($maturity);
+            $discount = FinancialValidations::validateFloat($discount);
         } catch (Exception $e) {
             return $e->getMessage();
         }
 
-        //    Validate
-        if (is_numeric($discount)) {
         if ($discount <= 0) {
             return Functions::NAN();
         }
 
         $daysBetweenSettlementAndMaturity = $maturity - $settlement;
-            $daysPerYear = Helpers::daysPerYear(DateTimeExcel\Year::funcYear($maturity), Helpers::DAYS_PER_YEAR_ACTUAL);
+        $daysPerYear = Helpers::daysPerYear(
+            DateTimeExcel\Year::funcYear($maturity),
+            FinancialConstants::BASIS_DAYS_PER_YEAR_ACTUAL
+        );
 
         if ($daysBetweenSettlementAndMaturity > $daysPerYear || $daysBetweenSettlementAndMaturity < 0) {
             return Functions::NAN();
@@ -104,9 +104,6 @@ class TreasuryBill
         return $price;
     }
 
-        return Functions::VALUE();
-    }
-
     /**
      * TBILLYIELD.
      *
@@ -128,20 +125,18 @@ class TreasuryBill
         $price = Functions::flattenSingleValue($price);
 
         try {
-            $settlement = self::validateSettlementDate($settlement);
+            $settlement = FinancialValidations::validateSettlementDate($settlement);
-            $maturity = self::validateMaturityDate($maturity);
+            $maturity = FinancialValidations::validateMaturityDate($maturity);
+            $price = FinancialValidations::validatePrice($price);
         } catch (Exception $e) {
             return $e->getMessage();
         }
 
-        //    Validate
-        if (is_numeric($price)) {
-            if ($price <= 0) {
-                return Functions::NAN();
-            }
-
         $daysBetweenSettlementAndMaturity = $maturity - $settlement;
-            $daysPerYear = Helpers::daysPerYear(DateTimeExcel\Year::funcYear($maturity), Helpers::DAYS_PER_YEAR_ACTUAL);
+        $daysPerYear = Helpers::daysPerYear(
+            DateTimeExcel\Year::funcYear($maturity),
+            FinancialConstants::BASIS_DAYS_PER_YEAR_ACTUAL
+        );
 
         if ($daysBetweenSettlementAndMaturity > $daysPerYear || $daysBetweenSettlementAndMaturity < 0) {
             return Functions::NAN();
@@ -149,7 +144,4 @@ class TreasuryBill
 
         return ((100 - $price) / $price) * (360 / $daysBetweenSettlementAndMaturity);
     }
-
-        return Functions::VALUE();
-    }
 }

tests/data/Calculation/Financial/ACCRINT.php

@@ -13,11 +13,15 @@ return [
     ],
     [
         15.5555555555559,
-        '2008-03-05', '2008-08-31', '2008-05-01', 0.10, 1000, 2, 0, true,
+        '2008-03-05', '2008-08-31', '2008-05-01', 0.10, 1000, 2, null,
+    ],
+    [
+        15.5555555555559,
+        '2008-03-05', '2008-08-31', '2008-05-01', 0.10, 1000, 2, 0,
     ],
     [
         7.22222222222222,
-        '2008-04-05', '2008-08-31', '2008-05-01', 0.10, 1000, 2, 0, true,
+        '2008-04-05', '2008-08-31', '2008-05-01', 0.10, 1000, 2, 0,
     ],
     [
         200,
@@ -29,15 +33,15 @@ return [
     ],
     [
         32.363013698630134,
-        '2012-01-01', '2012-03-31', '2012-02-15', 0.0525, 5000, 4, 3, 1,
+        '2012-01-01', '2012-03-31', '2012-02-15', 0.0525, 5000, 4, 3,
     ],
     [
         6.472602739726027,
-        '2012-01-01', '2012-03-31', '2012-02-15', 0.0525, 1000, 4, 3, 1,
+        '2012-01-01', '2012-03-31', '2012-02-15', 0.0525, 1000, 4, 3,
     ],
     [
         18.05555555555555,
-        '2017-08-05', '2017-11-10', '2017-10-10', 0.05, 2000, 4, 0, 1,
+        '2017-08-05', '2017-11-10', '2017-10-10', 0.05, 2000, 4, 0,
     ],
     [
         '#NUM!',

tests/data/Calculation/Financial/ACCRINTM.php

@@ -11,6 +11,10 @@ return [
         800,
         '2010-01-01', '2010-12-31', 0.08, 10000,
     ],
+    [
+        800,
+        '2010-01-01', '2010-12-31', 0.08, 10000, null,
+    ],
     [
         365.958904109589,
         '2012-01-01', '2013-02-15', 0.065, 5000, 3,

tests/data/Calculation/Financial/AMORDEGRC.php

@@ -7,6 +7,14 @@ return [
         776,
         2400, '2008-08-19', '2008-12-31', 300, 1, 0.15, 1,
     ],
+    [
+        776,
+        2400, '2008-08-19', '2008-12-31', 300, 1, 0.15, 0,
+    ],
+    [
+        776,
+        2400, '2008-08-19', '2008-12-31', 300, 1, 0.15, null,
+    ],
     [
         820,
         2400, '2008-08-19', '2008-12-31', 300, 1, 0.2, 1,
@@ -51,6 +59,10 @@ return [
         2813,
         10000, '2012-03-01', '2012-12-31', 1500, 1, 0.3, 1,
     ],
+    [
+        0.0,
+        500, '2012-03-01', '2012-12-31', 500, 3, 0.3, 1,
+    ],
     [
         '#VALUE!',
         'NaN', '2012-03-01', '2020-12-25', 20, 1, 0.2, 4,
@@ -67,4 +79,20 @@ return [
         '#VALUE!',
         550, '2012-03-01', '2020-12-25', 'NaN', 1, 0.2, 4,
     ],
+    [
+        '#VALUE!',
+        550, '2012-03-01', '2020-12-25', 20, 'NaN', 0.2, 4,
+    ],
+    [
+        '#VALUE!',
+        550, '2012-03-01', '2020-12-25', 20, 1, 'NaN', 4,
+    ],
+    [
+        '#VALUE!',
+        550, '2012-03-01', '2020-12-25', 20, 1, 0.2, 'NaN',
+    ],
+    [
+        '#NUM!',
+        550, '2012-03-01', '2020-12-25', 20, 1, 0.2, 99,
+    ],
 ];

tests/data/Calculation/Financial/AMORLINC.php

@@ -11,6 +11,14 @@ return [
         576,
         2400, '2008-08-19', '2008-12-31', 300, 2, 0.24, 1,
     ],
+    [
+        576,
+        2400, '2008-08-19', '2008-12-31', 300, 2, 0.24, 0,
+    ],
+    [
+        576,
+        2400, '2008-08-19', '2008-12-31', 300, 2, 0.24, null,
+    ],
     [
         30,
         150, '2011-01-01', '2011-09-30', 20, 1, 0.2, 4,
@@ -27,8 +35,36 @@ return [
         0.0,
         150, '2011-01-01', '2011-09-30', 20, 5, 0.2, 4,
     ],
+    [
+        '#VALUE!',
+        'NaN', '2011-01-01', '2011-09-30', 20, 1, 0.2, 4,
+    ],
+    [
+        '#VALUE!',
+        150, '2011-01-01', 'notADate', 20, 1, 0.2, 4,
+    ],
     [
         '#VALUE!',
         150, 'notADate', '2011-09-30', 20, 1, 0.2, 4,
     ],
+    [
+        '#VALUE!',
+        150, '2011-01-01', '2011-09-30', 'NaN', 1, 0.2, 4,
+    ],
+    [
+        '#VALUE!',
+        150, '2011-01-01', '2011-09-30', 20, 'NaN', 0.2, 4,
+    ],
+    [
+        '#VALUE!',
+        150, '2011-01-01', '2011-09-30', 20, 1, 'NaN', 4,
+    ],
+    [
+        '#VALUE!',
+        150, '2011-01-01', '2011-09-30', 20, 1, 0.2, 'NaN',
+    ],
+    [
+        '#NUM!',
+        550, '2012-03-01', '2020-12-25', 20, 1, 0.2, 99,
+    ],
 ];

tests/data/Calculation/Financial/COUPDAYBS.php

@@ -16,6 +16,13 @@ return [
         '2012-10-25',
         4,
     ],
+    [
+        66,
+        '2011-01-01',
+        '2012-10-25',
+        4,
+        null,
+    ],
     [
         71,
         '2011-01-25',

tests/data/Calculation/Financial/COUPDAYS.php

@@ -16,6 +16,13 @@ return [
         '2012-10-25',
         4,
     ],
+    [
+        90,
+        '2011-01-01',
+        '2012-10-25',
+        4,
+        null,
+    ],
     [
         182.5,
         '25-Jan-2007',

tests/data/Calculation/Financial/COUPDAYSNC.php

@@ -16,6 +16,13 @@ return [
         '2012-10-25',
         4,
     ],
+    [
+        24,
+        '2011-01-01',
+        '2012-10-25',
+        4,
+        null,
+    ],
     [
         '#VALUE!',
         'Invalid Date',

tests/data/Calculation/Financial/COUPNCD.php

@@ -16,6 +16,13 @@ return [
         '2012-10-25',
         4,
     ],
+    [
+        40568,
+        '2011-01-01',
+        '2012-10-25',
+        4,
+        null,
+    ],
     [
         '#VALUE!',
         'Invalid Date',

tests/data/Calculation/Financial/COUPNUM.php

@@ -17,6 +17,13 @@ return [
         4,
         0,
     ],
+    [
+        8,
+        '2011-01-01',
+        '2012-10-25',
+        4,
+        null,
+    ],
     [
         '#VALUE!',
         'Invalid Date',

tests/data/Calculation/Financial/COUPPCD.php

@@ -16,6 +16,13 @@ return [
         '2012-10-25',
         4,
     ],
+    [
+        40476,
+        '2011-01-01',
+        '2012-10-25',
+        4,
+        null,
+    ],
     [
         '#VALUE!',
         'Invalid Date',

tests/data/Calculation/Financial/CUMIPMT.php

@@ -21,6 +21,15 @@ return [
         1,
         0,
     ],
+    [
+        -937.5,
+        0.0075,
+        360,
+        125000,
+        1,
+        1,
+        null,
+    ],
     [
         -2299.6141712553544,
         0.004175,

tests/data/Calculation/Financial/CUMPRINC.php

@@ -21,6 +21,15 @@ return [
         1,
         0,
     ],
+    [
+        -68.278271180977001,
+        0.0075,
+        360,
+        125000,
+        1,
+        1,
+        null,
+    ],
     [
         -9025.875084814226,
         0.004175,

tests/data/Calculation/Financial/DISC.php

@@ -18,6 +18,14 @@ return [
         95,
         100,
     ],
+    [
+        0.01,
+        '2010-04-01',
+        '2015-03-31',
+        95,
+        100,
+        null,
+    ],
     [
         '#NUM!',
         '2010-04-01',

tests/data/Calculation/Financial/DaysPerYear.php

@@ -1,15 +1,15 @@
 <?php
 
-use PhpOffice\PhpSpreadsheet\Calculation\Financial\Helpers;
+use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 
 return [
-    [360, 2020, Helpers::DAYS_PER_YEAR_NASD],
+    [360, 2020, FinancialConstants::BASIS_DAYS_PER_YEAR_NASD],
-    [366, 2020, Helpers::DAYS_PER_YEAR_ACTUAL],
+    [366, 2020, FinancialConstants::BASIS_DAYS_PER_YEAR_ACTUAL],
-    [365, 2021, Helpers::DAYS_PER_YEAR_ACTUAL],
+    [365, 2021, FinancialConstants::BASIS_DAYS_PER_YEAR_ACTUAL],
-    [360, 2020, Helpers::DAYS_PER_YEAR_360],
+    [360, 2020, FinancialConstants::BASIS_DAYS_PER_YEAR_360],
-    [365, 2020, Helpers::DAYS_PER_YEAR_365],
+    [365, 2020, FinancialConstants::BASIS_DAYS_PER_YEAR_365],
-    [360, 2020, Helpers::DAYS_PER_YEAR_360_EUROPEAN],
+    [360, 2020, FinancialConstants::BASIS_DAYS_PER_YEAR_360_EUROPEAN],
     [Functions::NAN(), 2020, 'Invalid'],
     [Functions::NAN(), 2020, 999],
 ];

tests/data/Calculation/Financial/FV.php

@@ -91,7 +91,23 @@ return [
         'NaN',
     ],
     [
-        '#NUM!',
+        -33882857.54639115,
+        -0.10,
+        -100,
+        -100,
+        0,
+        1,
+    ],
+    [
+        -10000.00,
+        0.0,
+        -100,
+        -100,
+        0,
+        1,
+    ],
+    [
+        -100.0,
         0.10,
         -1,
         -100,

tests/data/Calculation/Financial/INTRATE.php

@@ -4,7 +4,7 @@
 
 return [
     [
-        0.057680000000000002,
+        0.05768,
         '2008-02-15',
         '2008-05-15',
         1000000,
@@ -12,12 +12,20 @@ return [
         2,
     ],
     [
-        0.22500000000000001,
+        0.225,
         '2005-04-01',
         '2010-03-31',
         1000,
         2125,
     ],
+    [
+        0.225,
+        '2005-04-01',
+        '2010-03-31',
+        1000,
+        2125,
+        null,
+    ],
     [
         '#VALUE!',
         '2008-02-15',

tests/data/Calculation/Financial/PDURATION.php

@@ -33,6 +33,10 @@ return [
         '#VALUE!',
         [0.05, 50, 'NaN'],
     ],
+    [
+        '#NUM!',
+        [-0.10, 50, 100],
+    ],
     [
         '#NUM!',
         [0.00, 50, 100],

tests/data/Calculation/Financial/PRICE.php

@@ -192,6 +192,16 @@ return [
         4,
         0,
     ],
+    [
+        110.9216934,
+        '01-Apr-2012',
+        '31-Mar-2020',
+        0.12,
+        0.10,
+        100,
+        4,
+        null,
+    ],
     [
         110.9217251,
         '01-Apr-2012',

tests/data/Calculation/Financial/PRICEDISC.php

@@ -5,6 +5,10 @@ return [
         90.0,
         ['01-Apr-2017', '31-Mar-2021', 0.025, 100],
     ],
+    [
+        97.625,
+        ['2008-02-15', '2008-11-30', 0.03, 100, null],
+    ],
     [
         97.6311475409836,
         ['2008-02-15', '2008-11-30', 0.03, 100, 1],

tests/data/Calculation/Financial/PRICEMAT.php

@@ -5,6 +5,10 @@ return [
         99.98449887555694,
         '15-Feb-2008', '13-Apr-2008', '11-Nov-2007', 0.061, 0.061, 0,
     ],
+    [
+        99.98449887555694,
+        '15-Feb-2008', '13-Apr-2008', '11-Nov-2007', 0.061, 0.061, null,
+    ],
     [
         106.8486842105263,
         '1-Apr-2017', '31-Mar-2021', '1-Jan-2017', 0.055, 0.035,

tests/data/Calculation/Financial/RECEIVED.php

@@ -9,8 +9,36 @@ return [
         1120.2128404396835,
         '6-Jul-2017', '15-Jan-2020', 1000, 0.0425,
     ],
+    [
+        1120.2128404396835,
+        '6-Jul-2017', '15-Jan-2020', 1000, 0.0425, null,
+    ],
     [
         273037.54266211606,
         '15-Feb-2008', '15-Nov-2017', 100000, 0.065,
     ],
+    [
+        '#VALUE!',
+        'Invalid Date', '15-Nov-2017', 100000, 0.065, 0,
+    ],
+    [
+        '#VALUE!',
+        '15-Feb-2008', 'Invalid Date', 100000, 0.065, 0,
+    ],
+    [
+        '#VALUE!',
+        '15-Feb-2008', '15-Nov-2017', 'NaN', 0.065, 0,
+    ],
+    [
+        '#VALUE!',
+        '15-Feb-2008', '15-Nov-2017', 100000, 'NaN', 0,
+    ],
+    [
+        '#VALUE!',
+        '15-Feb-2008', '15-Nov-2017', 100000, 0.065, 'NaN',
+    ],
+    [
+        '#NUM!',
+        '15-Feb-2008', '15-Nov-2017', -1000, 0.065, 0,
+    ],
 ];

tests/data/Calculation/Financial/YIELDDISC.php

@@ -9,6 +9,14 @@ return [
         0.06220123250590336,
         '1-Jan-2017', '30-Jun-2017', 97, 100,
     ],
+    [
+        0.06220123250590336,
+        '1-Jan-2017', '30-Jun-2017', 97, 100, 0,
+    ],
+    [
+        0.06220123250590336,
+        '1-Jan-2017', '30-Jun-2017', 97, 100, null,
+    ],
     [
         '#VALUE!',
         'Invalid', '30-Jun-2017', 97, 100,

tests/data/Calculation/Financial/YIELDMAT.php

@@ -5,6 +5,10 @@ return [
         0.06095433369153867,
         '15-Mar-2008', '3-Nov-2008', '8-Nov-2007', 0.0625, 100.0123, 0,
     ],
+    [
+        0.06095433369153867,
+        '15-Mar-2008', '3-Nov-2008', '8-Nov-2007', 0.0625, 100.0123, null,
+    ],
     [
         0.04210977320221025,
         '1-Jan-2017', '30-Jun-2018', '01-Jul-2014', 0.055, 101,

tests/data/Calculation/Statistical/ZTEST.php

@@ -27,6 +27,16 @@ return [
         5,
         3,
     ],
+    [
+        0.00012286639,
+        [24, 22, 19, 21, 18, 19, 20, 23],
+        18,
+    ],
+    [
+        0.952209647727,
+        [24, 22, 19, 21, 18, 19, 20, 23],
+        22,
+    ],
     [
         '#VALUE!',
         [1, 2, 3, 3, 4, 4, 8, 10, 12],