Zend_Crypt_Math_BigInteger_Gmp Class Reference

Inheritance diagram for Zend_Crypt_Math_BigInteger_Gmp:

Public Member Functions
	init ($operand, $base=10)
	add ($left_operand, $right_operand)
	subtract ($left_operand, $right_operand)
	compare ($left_operand, $right_operand)
	divide ($left_operand, $right_operand)
	modulus ($left_operand, $modulus)
	multiply ($left_operand, $right_operand)
	pow ($left_operand, $right_operand)
	powmod ($left_operand, $right_operand, $modulus)
	sqrt ($operand)
	binaryToInteger ($operand)
	integerToBinary ($operand)
	hexToDecimal ($operand)

Detailed Description

Definition at line 39 of file Gmp.php.

Member Function Documentation

add()

add	(		$left_operand,
			$right_operand
	)

Adds two arbitrary precision numbers

Parameters

resource	$left_operand
resource	$right_operand

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 60 of file Gmp.php.

    {
        $result = gmp_add($left_operand, $right_operand);
        return gmp_strval($result);
    }

binaryToInteger()

binaryToInteger

(

$operand

)

Parameters

string

$operand

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 178 of file Gmp.php.

    {
        $result = '0';
        while (strlen($operand)) {
            $ord = ord(substr($operand, 0, 1));
            $result = gmp_add(gmp_mul($result, 256), $ord);
            $operand = substr($operand, 1);
        }
        return gmp_strval($result);
    }

compare()

compare	(		$left_operand,
			$right_operand
	)

Compare two big integers and returns result as an integer where 0 means both are identical, 1 that left_operand is larger, or -1 that right_operand is larger.

Parameters

resource	$left_operand
resource	$right_operand

Returns

int

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 88 of file Gmp.php.

    {
        $result = gmp_cmp($left_operand, $right_operand);
        return gmp_strval($result);
    }

divide()

divide	(		$left_operand,
			$right_operand
	)

Divide two big integers and return result or NULL if the denominator is zero.

Parameters

resource	$left_operand
resource	$right_operand

Returns

string|null

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 102 of file Gmp.php.

    {
        $result = gmp_div($left_operand, $right_operand);
        return gmp_strval($result);
    }

hexToDecimal()

hexToDecimal

(

$operand

)

Parameters

string

$operand

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 209 of file Gmp.php.

    {
        $return = '0';
        while(strlen($hex)) {
            $hex = hexdec(substr($operand, 0, 4));
            $dec = gmp_add(gmp_mul($return, 65536), $hex);
            $operand = substr($operand, 4);
        }
        return $return;
    }

init()

init	(		$operand,
			$base = 10
	)

Initialise a big integer into an extension specific type.

Parameters

string	$operand
int	$base

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 48 of file Gmp.php.

    {
        return $operand;
    }

integerToBinary()

integerToBinary

(

$operand

)

Parameters

resource

$operand

GMP number resource

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 193 of file Gmp.php.

    {
        $bigInt = gmp_strval($operand, 16);
        if (strlen($bigInt) % 2 != 0) {
            $bigInt = '0' . $bigInt;
        } else if ($bigInt[0] > '7') {
            $bigInt = '00' . $bigInt;
        }
        $return = pack("H*", $bigInt);
        return $return;
    }

modulus()

modulus	(		$left_operand,
			$modulus
	)

Modulo operation

Parameters

resource	$left_operand
resource	$modulus

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 116 of file Gmp.php.

    {
        $result = gmp_mod($left_operand, $modulus);
        return gmp_strval($result);
    }

multiply()

multiply	(		$left_operand,
			$right_operand
	)

Multiply numbers

Parameters

resource	$left_operand
resource	$right_operand

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 129 of file Gmp.php.

    {
        $result = gmp_mul($left_operand, $right_operand);
        return gmp_strval($result);
    }

pow()

pow	(		$left_operand,
			$right_operand
	)

Raise number into power

Parameters

resource	$left_operand
int	$right_operand

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 142 of file Gmp.php.

    {
        $result = gmp_pow($left_operand, $right_operand);
        return gmp_strval($result);
    }

powmod()

powmod	(		$left_operand,
			$right_operand,
			$modulus
	)

Raise number into power with modulo

Parameters

resource	$left_operand
resource	$right_operand
resource	$modulus

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 156 of file Gmp.php.

    {
        $result = gmp_powm($left_operand, $right_operand, $modulus);
        return gmp_strval($result);
    }

sqrt()

sqrt

(

$operand

)

Calculate square root

Parameters

$operand

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 168 of file Gmp.php.

    {
        $result = gmp_sqrt($operand);
        return gmp_strval($result);
    }

subtract()

subtract	(		$left_operand,
			$right_operand
	)

Subtract numbers

Parameters

resource	$left_operand
resource	$right_operand

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 73 of file Gmp.php.

    {
        $result = gmp_sub($left_operand, $right_operand);
        return gmp_strval($result);
    }

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The documentation for this class was generated from the following file:

• vendor/magento/zendframework1/library/Zend/Crypt/Math/BigInteger/Gmp.php