Zend_Crypt_Math_BigInteger_Bcmath Class Reference

Inheritance diagram for Zend_Crypt_Math_BigInteger_Bcmath:

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 Bcmath.php.

Member Function Documentation

add()

add	(		$left_operand,
			$right_operand
	)

Adds two arbitrary precision numbers

Parameters

string	$left_operand
string	$right_operand

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 62 of file Bcmath.php.

    {
        return bcadd($left_operand, $right_operand);
    }

binaryToInteger()

binaryToInteger

(

$operand

)

Parameters

string

$operand

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 171 of file Bcmath.php.

    {
        $result = '0';
        while (strlen($operand)) {
            $ord = ord(substr($operand, 0, 1));
            $result = bcadd(bcmul($result, 256), $ord);
            $operand = substr($operand, 1);
        }
        return $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

string	$left_operand
string	$right_operand

Returns

int

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 88 of file Bcmath.php.

    {
        return bccomp($left_operand, $right_operand);
    }

divide()

divide	(		$left_operand,
			$right_operand
	)

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

Parameters

string	$left_operand
string	$right_operand

Returns

string|null

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 101 of file Bcmath.php.

    {
        return bcdiv($left_operand, $right_operand);
    }

hexToDecimal()

hexToDecimal

(

$operand

)

public function integerToBinary($operand) { $return = ''; while(bccomp($operand, '0')) { $return .= chr(bcmod($operand, '256')); $operand = bcdiv($operand, '256'); } return $return; }

Parameters

string

$operand

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 217 of file Bcmath.php.

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

init()

init	(		$operand,
			$base = 10
	)

Initialise a big integer into an extension specific type. This is not applicable to BCMath.

Parameters

string	$operand
int	$base

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 50 of file Bcmath.php.

    {
        return $operand;
    }

integerToBinary()

integerToBinary

(

$operand

)

Parameters

string

$operand

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 186 of file Bcmath.php.

    {
        $cmp = bccomp($operand, 0);
        $return = '';
        if ($cmp == 0) {
            return "\0";
        }
        while (bccomp($operand, 0) > 0) {
            $return = chr(bcmod($operand, 256)) . $return;
            $operand = bcdiv($operand, 256);
        }
        if (ord($return[0]) > 127) {
            $return = "\0" . $return;
        }
        return $return;
    }

modulus()

modulus	(		$left_operand,
			$modulus
	)

Get modulus of an arbitrary precision number

Parameters

string	$left_operand
string	$modulus

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 113 of file Bcmath.php.

    {
        return bcmod($left_operand, $modulus);
    }

multiply()

multiply	(		$left_operand,
			$right_operand
	)

Multiply two arbitrary precision numbers

Parameters

string	$left_operand
string	$right_operand

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 125 of file Bcmath.php.

    {
        return bcmul($left_operand, $right_operand);
    }

pow()

pow	(		$left_operand,
			$right_operand
	)

Raise an arbitrary precision number to another

Parameters

string	$left_operand
string	$right_operand

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 137 of file Bcmath.php.

    {
        return bcpow($left_operand, $right_operand);
    }

powmod()

powmod	(		$left_operand,
			$right_operand,
			$modulus
	)

Raise an arbitrary precision number to another, reduced by a specified modulus

Parameters

string	$left_operand
string	$right_operand
string	$modulus

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 151 of file Bcmath.php.

    {
        return bcpowmod($left_operand, $right_operand, $modulus);
    }

sqrt()

sqrt

(

$operand

)

Get the square root of an arbitrary precision number

Parameters

string

$operand

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 162 of file Bcmath.php.

    {
        return bcsqrt($operand);
    }

subtract()

subtract	(		$left_operand,
			$right_operand
	)

Subtract one arbitrary precision number from another

Parameters

string	$left_operand
string	$right_operand

Returns

string

Implements Zend_Crypt_Math_BigInteger_Interface.

Definition at line 74 of file Bcmath.php.

    {
        return bcsub($left_operand, $right_operand);
    }

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

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