Xes
73154ae174
Fuente: https://github.com/chamilo/chamilo-lms/releases/download/v1.11.40/chamilo-1.11.40.zip sha256: 1cf4bf2cc7bae1ef1a1eff643235db1d552f78ddf4b6dd1e2d2dac9868679439 Snapshot independiente (rama huerfana); diffable vs 1.11.38. vendor incluido.
103 lines
3.7 KiB
PHP
103 lines
3.7 KiB
PHP
<?php
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namespace Yuloh\BcCompPolyfill{
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if (!function_exists('Yuloh\BcCompPolyfill\bccomp')) {
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function bccomp($leftOperand, $rightOperand, $scale = 0)
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{
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$leftOperand = new BigNumber((string) $leftOperand);
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$rightOperand = new BigNumber((string) $rightOperand);
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// The real bccomp casts floats to int but throws a warning for anything else.
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if (is_float($scale)) {
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$scale = (int) $scale;
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}
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if (!is_int($scale)) {
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trigger_error(
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sprintf('bccomp() expects parameter 3 to be integer, %s given', gettype($scale)),
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E_USER_WARNING
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);
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}
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// If both numbers are zero, they are equal.
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if ($leftOperand->isZero() && $rightOperand->isZero()) {
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return 0;
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}
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// If one number is positive while the other is negative we can return early.
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if ($leftOperand->isPositive() && $rightOperand->isNegative()) {
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return 1;
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}
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if ($leftOperand->isNegative() && $rightOperand->isPositive()) {
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return -1;
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}
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$isPositiveComparison = $leftOperand->isPositive() && $rightOperand->isPositive();
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// If the part to the left of the decimal is longer it's the larger number.
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if ($leftOperand->getCharacteristicLength() > $rightOperand->getCharacteristicLength()) {
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return $isPositiveComparison ? 1 : -1;
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}
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if ($leftOperand->getCharacteristicLength() < $rightOperand->getCharacteristicLength()) {
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return $isPositiveComparison ? -1 : 1;
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}
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// if the part to the left of the decimal is equal, we check each place for a larger number.
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for ($i = 0; $i < $leftOperand->getCharacteristicLength(); $i++) {
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if ($leftOperand->getCharacteristic()[$i] > $rightOperand->getCharacteristic()[$i]) {
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return $isPositiveComparison ? 1 : -1;
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}
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if ($leftOperand->getCharacteristic()[$i] < $rightOperand->getCharacteristic()[$i]) {
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return $isPositiveComparison ? -1 : 1;
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}
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}
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// if there is a scale and we still haven't found the larger number,
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// check each place to the right of the decimal place.
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$leftMantissa = $leftOperand->getMantissa();
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$rightMantissa = $rightOperand->getMantissa();
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for ($i = 0; $i < $scale; $i++) {
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// If we are still iterating and out of digits to compare,
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// we can return early.
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if (!isset($leftMantissa[$i]) && !isset($rightMantissa[$i])) {
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return 0;
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}
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// If there isn't a digit in this decimal place, set it to 0.
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if (!isset($leftMantissa[$i])) {
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$leftMantissa = $leftMantissa . '0';
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}
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if (!isset($rightMantissa[$i])) {
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$rightMantissa = $rightMantissa . '0';
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}
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if ($leftMantissa[$i] > $rightMantissa[$i]) {
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return $isPositiveComparison ? 1 : -1;
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}
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if ($leftMantissa[$i] < $rightMantissa[$i]) {
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return $isPositiveComparison ? -1 : 1;
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}
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}
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return 0;
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}
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}
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}
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namespace {
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if (!function_exists('bccomp')) {
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function bccomp($leftOperand, $rightOperand, $scale = 0)
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{
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return \Yuloh\BcCompPolyfill\bccomp($leftOperand, $rightOperand, $scale);
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}
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}
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}
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