diff options
Diffstat (limited to 'vendor/zendframework/zend-math/src/BigInteger/Adapter/Gmp.php')
| -rw-r--r-- | vendor/zendframework/zend-math/src/BigInteger/Adapter/Gmp.php | 321 |
1 files changed, 0 insertions, 321 deletions
diff --git a/vendor/zendframework/zend-math/src/BigInteger/Adapter/Gmp.php b/vendor/zendframework/zend-math/src/BigInteger/Adapter/Gmp.php deleted file mode 100644 index e29dc9c..0000000 --- a/vendor/zendframework/zend-math/src/BigInteger/Adapter/Gmp.php +++ /dev/null @@ -1,321 +0,0 @@ -<?php -/** - * Zend Framework (http://framework.zend.com/) - * - * @link http://github.com/zendframework/zf2 for the canonical source repository - * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com) - * @license http://framework.zend.com/license/new-bsd New BSD License - */ - -namespace Zend\Math\BigInteger\Adapter; - -use Zend\Math\BigInteger\Exception; - -/** - * GMP extension adapter - */ -class Gmp implements AdapterInterface -{ - /** - * Create string representing big integer in decimal form from arbitrary integer format - * - * @param string $operand - * @param int|null $base - * @return bool|string - */ - public function init($operand, $base = null) - { - $sign = (strpos($operand, '-') === 0) ? '-' : ''; - $operand = ltrim($operand, '-+'); - - if (null === $base) { - // scientific notation - if (preg_match('#^(?:([1-9])\.)?([0-9]+)[eE]\+?([0-9]+)$#', $operand, $m)) { - if (!empty($m[1])) { - if ($m[3] < strlen($m[2])) { - return false; - } - } else { - $m[1] = ''; - } - $operand = str_pad(($m[1] . $m[2]), ($m[3] + 1), '0', STR_PAD_RIGHT); - } else { - // let GMP guess base - $base = 0; - } - } - - set_error_handler(function () { /* Do nothing */}, \E_WARNING); - $res = gmp_init($sign . $operand, $base); - restore_error_handler(); - if ($res === false) { - return false; - } - - return gmp_strval($res); - } - - /** - * Add two big integers - * - * @param string $leftOperand - * @param string $rightOperand - * @return string - */ - public function add($leftOperand, $rightOperand) - { - $result = gmp_add($leftOperand, $rightOperand); - return gmp_strval($result); - } - - /** - * Subtract two big integers - * - * @param string $leftOperand - * @param string $rightOperand - * @return string - */ - public function sub($leftOperand, $rightOperand) - { - $result = gmp_sub($leftOperand, $rightOperand); - return gmp_strval($result); - } - - /** - * Multiply two big integers - * - * @param string $leftOperand - * @param string $rightOperand - * @return string - */ - public function mul($leftOperand, $rightOperand) - { - $result = gmp_mul($leftOperand, $rightOperand); - return gmp_strval($result); - } - - /** - * Divide two big integers and return integer part result. - * Raises exception if the divisor is zero. - * - * @param string $leftOperand - * @param string $rightOperand - * @return string|null - * @throws Exception\DivisionByZeroException - */ - public function div($leftOperand, $rightOperand) - { - if ($rightOperand == 0) { - throw new Exception\DivisionByZeroException( - "Division by zero; divisor = {$rightOperand}" - ); - } - - $result = gmp_div_q($leftOperand, $rightOperand); - return gmp_strval($result); - } - - /** - * Raise a big integers to another - * - * @param string $operand - * @param string $exp - * @return string - */ - public function pow($operand, $exp) - { - $result = gmp_pow($operand, $exp); - return gmp_strval($result); - } - - /** - * Get the square root of a big integer - * - * @param string $operand - * @return string - */ - public function sqrt($operand) - { - $result = gmp_sqrt($operand); - return gmp_strval($result); - } - - /** - * Get absolute value of a big integer - * - * @param string $operand - * @return string - */ - public function abs($operand) - { - $result = gmp_abs($operand); - return gmp_strval($result); - } - - /** - * Get modulus of a big integer - * - * @param string $leftOperand - * @param string $modulus - * @return string - */ - public function mod($leftOperand, $modulus) - { - $result = gmp_mod($leftOperand, $modulus); - return gmp_strval($result); - } - - /** - * Raise a big integer to another, reduced by a specified modulus - * - * @param string $leftOperand - * @param string $rightOperand - * @param string $modulus - * @return string - */ - public function powmod($leftOperand, $rightOperand, $modulus) - { - $result = gmp_powm($leftOperand, $rightOperand, $modulus); - return gmp_strval($result); - } - - /** - * Compare two big integers and returns result as an integer where - * Returns < 0 if leftOperand is less than rightOperand; - * > 0 if leftOperand is greater than rightOperand, and 0 if they are equal. - * - * @param string $leftOperand - * @param string $rightOperand - * @return int - */ - public function comp($leftOperand, $rightOperand) - { - return gmp_cmp($leftOperand, $rightOperand); - } - - /** - * Convert big integer into it's binary number representation - * - * @param string $int - * @param bool $twoc return in twos' complement form - * @return string - */ - public function intToBin($int, $twoc = false) - { - $nb = chr(0); - $isNegative = (strpos($int, '-') === 0); - $int = ltrim($int, '+-0'); - - if (empty($int)) { - return $nb; - } - - if ($isNegative && $twoc) { - $int = gmp_sub($int, '1'); - } - - $hex = gmp_strval($int, 16); - if (strlen($hex) & 1) { - $hex = '0' . $hex; - } - - $bytes = pack('H*', $hex); - $bytes = ltrim($bytes, $nb); - - if ($twoc) { - if (ord($bytes[0]) & 0x80) { - $bytes = $nb . $bytes; - } - return $isNegative ? ~$bytes : $bytes; - } - - return $bytes; - } - - /** - * Convert binary number into big integer - * - * @param string $bytes - * @param bool $twoc whether binary number is in twos' complement form - * @return string - */ - public function binToInt($bytes, $twoc = false) - { - $isNegative = ((ord($bytes[0]) & 0x80) && $twoc); - - $sign = ''; - if ($isNegative) { - $bytes = ~$bytes; - $sign = '-'; - } - - $result = gmp_init($sign . bin2hex($bytes), 16); - - if ($isNegative) { - $result = gmp_sub($result, '1'); - } - - return gmp_strval($result); - } - - /** - * Base conversion. Bases 2..62 are supported - * - * @param string $operand - * @param int $fromBase - * @param int $toBase - * @return string - * @throws Exception\InvalidArgumentException - */ - public function baseConvert($operand, $fromBase, $toBase = 10) - { - if ($fromBase == $toBase) { - return $operand; - } - - if ($fromBase < 2 || $fromBase > 62) { - throw new Exception\InvalidArgumentException( - "Unsupported base: {$fromBase}, should be 2..62" - ); - } - if ($toBase < 2 || $toBase > 62) { - throw new Exception\InvalidArgumentException( - "Unsupported base: {$toBase}, should be 2..62" - ); - } - - if ($fromBase <= 36 && $toBase <= 36) { - return gmp_strval(gmp_init($operand, $fromBase), $toBase); - } - - $sign = (strpos($operand, '-') === 0) ? '-' : ''; - $operand = ltrim($operand, '-+'); - - $chars = self::BASE62_ALPHABET; - - // convert operand to decimal - if ($fromBase !== 10) { - $decimal = '0'; - for ($i = 0, $len = strlen($operand); $i < $len; $i++) { - $decimal = gmp_mul($decimal, $fromBase); - $decimal = gmp_add($decimal, strpos($chars, $operand[$i])); - } - } else { - $decimal = gmp_init($operand); - } - - if ($toBase == 10) { - return gmp_strval($decimal); - } - - // convert decimal to base - $result = ''; - do { - list($decimal, $remainder) = gmp_div_qr($decimal, $toBase); - $pos = gmp_strval($remainder); - $result = $chars[$pos] . $result; - } while (gmp_cmp($decimal, '0')); - - return $sign . $result; - } -} |