GmpCalculator.php
86 lines
| 1 | <?php |
| 2 | |
| 3 | declare (strict_types=1); |
| 4 | namespace IAWPSCOPED\Brick\Math\Internal\Calculator; |
| 5 | |
| 6 | use IAWPSCOPED\Brick\Math\Internal\Calculator; |
| 7 | /** |
| 8 | * Calculator implementation built around the GMP library. |
| 9 | * |
| 10 | * @internal |
| 11 | * |
| 12 | * @psalm-immutable |
| 13 | */ |
| 14 | class GmpCalculator extends Calculator |
| 15 | { |
| 16 | public function add(string $a, string $b) : string |
| 17 | { |
| 18 | return \gmp_strval(\gmp_add($a, $b)); |
| 19 | } |
| 20 | public function sub(string $a, string $b) : string |
| 21 | { |
| 22 | return \gmp_strval(\gmp_sub($a, $b)); |
| 23 | } |
| 24 | public function mul(string $a, string $b) : string |
| 25 | { |
| 26 | return \gmp_strval(\gmp_mul($a, $b)); |
| 27 | } |
| 28 | public function divQ(string $a, string $b) : string |
| 29 | { |
| 30 | return \gmp_strval(\gmp_div_q($a, $b)); |
| 31 | } |
| 32 | public function divR(string $a, string $b) : string |
| 33 | { |
| 34 | return \gmp_strval(\gmp_div_r($a, $b)); |
| 35 | } |
| 36 | public function divQR(string $a, string $b) : array |
| 37 | { |
| 38 | [$q, $r] = \gmp_div_qr($a, $b); |
| 39 | return [\gmp_strval($q), \gmp_strval($r)]; |
| 40 | } |
| 41 | public function pow(string $a, int $e) : string |
| 42 | { |
| 43 | return \gmp_strval(\gmp_pow($a, $e)); |
| 44 | } |
| 45 | public function modInverse(string $x, string $m) : ?string |
| 46 | { |
| 47 | $result = \gmp_invert($x, $m); |
| 48 | if ($result === \false) { |
| 49 | return null; |
| 50 | } |
| 51 | return \gmp_strval($result); |
| 52 | } |
| 53 | public function modPow(string $base, string $exp, string $mod) : string |
| 54 | { |
| 55 | return \gmp_strval(\gmp_powm($base, $exp, $mod)); |
| 56 | } |
| 57 | public function gcd(string $a, string $b) : string |
| 58 | { |
| 59 | return \gmp_strval(\gmp_gcd($a, $b)); |
| 60 | } |
| 61 | public function fromBase(string $number, int $base) : string |
| 62 | { |
| 63 | return \gmp_strval(\gmp_init($number, $base)); |
| 64 | } |
| 65 | public function toBase(string $number, int $base) : string |
| 66 | { |
| 67 | return \gmp_strval($number, $base); |
| 68 | } |
| 69 | public function and(string $a, string $b) : string |
| 70 | { |
| 71 | return \gmp_strval(\gmp_and($a, $b)); |
| 72 | } |
| 73 | public function or(string $a, string $b) : string |
| 74 | { |
| 75 | return \gmp_strval(\gmp_or($a, $b)); |
| 76 | } |
| 77 | public function xor(string $a, string $b) : string |
| 78 | { |
| 79 | return \gmp_strval(\gmp_xor($a, $b)); |
| 80 | } |
| 81 | public function sqrt(string $n) : string |
| 82 | { |
| 83 | return \gmp_strval(\gmp_sqrt($n)); |
| 84 | } |
| 85 | } |
| 86 |