Auth_OpenID_BcMathWrapper Class Reference

Inheritance diagram for Auth_OpenID_BcMathWrapper:

Collaboration diagram for Auth_OpenID_BcMathWrapper:

Public Member Functions
	add ($x, $y)
	sub ($x, $y)
	pow ($base, $exponent)
	cmp ($x, $y)
	init ($number, $base=10)
	mod ($base, $modulus)
	mul ($x, $y)
	div ($x, $y)
	_powmod ($base, $exponent, $modulus)
	Same as bcpowmod when bcpowmod is missing.
	powmod ($base, $exponent, $modulus)
	toString ($num)
Public Member Functions inherited from Auth_OpenID_MathLibrary
	longToBinary ($long)
	Given a long integer, returns the number converted to a binary string.
	binaryToLong ($str)
	Given a binary string, returns the binary string converted to a long number.
	base64ToLong ($str)
	longToBase64 ($str)
	rand ($stop)
	Returns a random number in the specified range.

Data Fields
	$type = 'bcmath'

Detailed Description

Definition at line 190 of file BigMath.php.

Member Function Documentation

Auth_OpenID_BcMathWrapper::_powmod	(		$base,
			$exponent,
			$modulus
	)

Same as bcpowmod when bcpowmod is missing.

private

Definition at line 238 of file BigMath.php.

References $result, cmp(), div(), mod(), and mul().

Referenced by powmod().

    {
        $square = $this->mod($base, $modulus);
        $result = 1;
        while($this->cmp($exponent, 0) > 0) {
            if ($this->mod($exponent, 2)) {
                $result = $this->mod($this->mul($result, $square), $modulus);
            }
            $square = $this->mod($this->mul($square, $square), $modulus);
            $exponent = $this->div($exponent, 2);
        }
        return $result;
    }

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Auth_OpenID_BcMathWrapper::add	(		$x,
			$y
	)

Definition at line 193 of file BigMath.php.

    {
        return bcadd($x, $y);
    }

Auth_OpenID_BcMathWrapper::cmp	(		$x,
			$y
	)

Definition at line 208 of file BigMath.php.

Referenced by _powmod().

    {
        return bccomp($x, $y);
    }

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Auth_OpenID_BcMathWrapper::div	(		$x,
			$y
	)

Definition at line 228 of file BigMath.php.

Referenced by _powmod().

    {
        return bcdiv($x, $y);
    }

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Auth_OpenID_BcMathWrapper::init	(		$number,
			$base = 10
	)

Definition at line 213 of file BigMath.php.

    {
        return $number;
    }

Auth_OpenID_BcMathWrapper::mod	(		$base,
			$modulus
	)

Definition at line 218 of file BigMath.php.

Referenced by _powmod().

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

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Auth_OpenID_BcMathWrapper::mul	(		$x,
			$y
	)

Definition at line 223 of file BigMath.php.

Referenced by _powmod().

    {
        return bcmul($x, $y);
    }

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Auth_OpenID_BcMathWrapper::pow	(		$base,
			$exponent
	)

Definition at line 203 of file BigMath.php.

    {
        return bcpow($base, $exponent);
    }

Auth_OpenID_BcMathWrapper::powmod	(		$base,
			$exponent,
			$modulus
	)

Definition at line 252 of file BigMath.php.

References _powmod().

    {
        if (function_exists('bcpowmod')) {
            return bcpowmod($base, $exponent, $modulus);
        } else {
            return $this->_powmod($base, $exponent, $modulus);
        }
    }

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Auth_OpenID_BcMathWrapper::sub	(		$x,
			$y
	)

Definition at line 198 of file BigMath.php.

    {
        return bcsub($x, $y);
    }

Auth_OpenID_BcMathWrapper::toString

(

$num

)

Definition at line 261 of file BigMath.php.

    {
        return $num;
    }

Field Documentation

Auth_OpenID_BcMathWrapper::$type = 'bcmath'

Definition at line 191 of file BigMath.php.

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

• Services/OpenId/lib/Auth/OpenID/BigMath.php