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Revision Autor Zeilennr. Zeile
148 lars 1 
<?php
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declare(strict_types=1);
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namespace Brick\Math\Internal\Calculator;
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use Brick\Math\Internal\Calculator;
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/**
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 * Calculator implementation built around the bcmath library.
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 *
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 * @internal
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 *
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 * @psalm-immutable
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 */
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class BcMathCalculator extends Calculator
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{
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    /**
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     * {@inheritdoc}
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     */
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    public function add(string $a, string $b) : string
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    {
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        return \bcadd($a, $b, 0);
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function sub(string $a, string $b) : string
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    {
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        return \bcsub($a, $b, 0);
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function mul(string $a, string $b) : string
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    {
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        return \bcmul($a, $b, 0);
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    }
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    /**
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     * {@inheritdoc}
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     *
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     * @psalm-suppress InvalidNullableReturnType
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     * @psalm-suppress NullableReturnStatement
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     */
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    public function divQ(string $a, string $b) : string
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    {
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        return \bcdiv($a, $b, 0);
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    }
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    /**
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     * {@inheritdoc}
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     *
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     * @psalm-suppress InvalidNullableReturnType
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     * @psalm-suppress NullableReturnStatement
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     */
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    public function divR(string $a, string $b) : string
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    {
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        if (version_compare(PHP_VERSION, '7.2') >= 0) {
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            return \bcmod($a, $b, 0);
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        }
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        return \bcmod($a, $b);
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function divQR(string $a, string $b) : array
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    {
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        $q = \bcdiv($a, $b, 0);
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        if (version_compare(PHP_VERSION, '7.2') >= 0) {
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            $r = \bcmod($a, $b, 0);
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        } else {
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            $r = \bcmod($a, $b);
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        }
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        assert($q !== null);
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        assert($r !== null);
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        return [$q, $r];
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function pow(string $a, int $e) : string
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    {
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        return \bcpow($a, (string) $e, 0);
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function modPow(string $base, string $exp, string $mod) : string
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    {
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        return \bcpowmod($base, $exp, $mod, 0);
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    }
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    /**
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     * {@inheritDoc}
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     */
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    public function sqrt(string $n) : string
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    {
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        return \bcsqrt($n, 0);
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    }
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}