--- a/includes/math.php Sun Mar 28 21:49:26 2010 -0400
+++ b/includes/math.php Sun Mar 28 23:10:46 2010 -0400
@@ -18,70 +18,70 @@
class EnanoMath_GMP
{
- var $api = 'GMP';
-
- /**
- * Initializes a number to a GMP integer.
- * @param string String representation of the number
- * @param int Base the number is currently in, defaults to 10
- * @return resource
- */
-
- function init($int, $base = 10)
- {
- return ( is_resource($int) ) ? $int : gmp_init($int, $base);
- }
-
- /**
- * Converts a number from a GMP integer to a string
- * @param resource
- * @param int Base, default is 10
- * @return string
- */
-
- function str($int, $base = 10)
- {
- return ( is_string($int) ) ? $int : gmp_strval($int, $base);
- }
-
- /**
- * Converts a number between bases.
- * @param resource BigInt to convert
- * @param int Base to convert from
- * @param int Base to convert to
- */
-
- function basecon($int, $from, $to)
- {
- return $this->init(gmp_strval(gmp_init($this->str($int), $from), $to));
- }
-
- /**
- * Generates a random integer.
- * @param int Length
- * @return resource
- */
-
- function random($len)
- {
- return gmp_random($len / 8);
- }
-
- /**
- * Powmod operation (calculates (a ^ b) mod m)
- * @param resource a
- * @param resource b
- * @param resource m
- * @return resource
- */
-
- function powmod($a, $b, $m)
- {
- $a = $this->init($a);
- $b = $this->init($b);
- $m = $this->init($m);
- return ( function_exists('gmp_powm') ) ? gmp_powm($a, $b, $m) : gmp_mod(gmp_pow($a, $b), $m);
- }
+ var $api = 'GMP';
+
+ /**
+ * Initializes a number to a GMP integer.
+ * @param string String representation of the number
+ * @param int Base the number is currently in, defaults to 10
+ * @return resource
+ */
+
+ function init($int, $base = 10)
+ {
+ return ( is_resource($int) ) ? $int : gmp_init($int, $base);
+ }
+
+ /**
+ * Converts a number from a GMP integer to a string
+ * @param resource
+ * @param int Base, default is 10
+ * @return string
+ */
+
+ function str($int, $base = 10)
+ {
+ return ( is_string($int) ) ? $int : gmp_strval($int, $base);
+ }
+
+ /**
+ * Converts a number between bases.
+ * @param resource BigInt to convert
+ * @param int Base to convert from
+ * @param int Base to convert to
+ */
+
+ function basecon($int, $from, $to)
+ {
+ return $this->init(gmp_strval(gmp_init($this->str($int), $from), $to));
+ }
+
+ /**
+ * Generates a random integer.
+ * @param int Length
+ * @return resource
+ */
+
+ function random($len)
+ {
+ return gmp_random($len / 8);
+ }
+
+ /**
+ * Powmod operation (calculates (a ^ b) mod m)
+ * @param resource a
+ * @param resource b
+ * @param resource m
+ * @return resource
+ */
+
+ function powmod($a, $b, $m)
+ {
+ $a = $this->init($a);
+ $b = $this->init($b);
+ $m = $this->init($m);
+ return ( function_exists('gmp_powm') ) ? gmp_powm($a, $b, $m) : gmp_mod(gmp_pow($a, $b), $m);
+ }
}
/**
@@ -90,70 +90,70 @@
class EnanoMath_BigInt
{
- var $api = 'big_int';
-
- /**
- * Initializes a number to a BigInt integer.
- * @param string String representation of the number
- * @param int Base the number is in, defaults to 10
- * @return resource
- */
-
- function init($int, $base = 10)
- {
- return (is_resource($int)) ? $int : bi_from_str($int, $base);
- }
-
- /**
- * Converts a number from a BigInt integer to a string
- * @param resource
- * @param int Base, default is 10
- * @return string
- */
-
- function str($int, $base = 10)
- {
- return ( is_string($int) ) ? $int : bi_to_str($int, $base);
- }
-
- /**
- * Generates a random integer
- * @param int Length (bits)
- * @return resource
- */
-
- function random($len)
- {
- return bi_rand($len);
- }
-
- /**
- * Converts a number between bases.
- * @param resource BigInt to convert
- * @param int Base to convert from
- * @param int Base to convert to
- */
-
- function basecon($int, $from, $to)
- {
- return bi_base_convert($this->str($int, $from), $from, $to);
- }
-
- /**
- * Powmod operation (calculates (a ^ b) mod m)
- * @param resource a
- * @param resource b
- * @param resource m
- * @return resource
- */
-
- function powmod($a, $b, $m)
- {
- $a = $this->init($a);
- $b = $this->init($b);
- $m = $this->init($m);
- return bi_powmod($a, $b, $m);
- }
+ var $api = 'big_int';
+
+ /**
+ * Initializes a number to a BigInt integer.
+ * @param string String representation of the number
+ * @param int Base the number is in, defaults to 10
+ * @return resource
+ */
+
+ function init($int, $base = 10)
+ {
+ return (is_resource($int)) ? $int : bi_from_str($int, $base);
+ }
+
+ /**
+ * Converts a number from a BigInt integer to a string
+ * @param resource
+ * @param int Base, default is 10
+ * @return string
+ */
+
+ function str($int, $base = 10)
+ {
+ return ( is_string($int) ) ? $int : bi_to_str($int, $base);
+ }
+
+ /**
+ * Generates a random integer
+ * @param int Length (bits)
+ * @return resource
+ */
+
+ function random($len)
+ {
+ return bi_rand($len);
+ }
+
+ /**
+ * Converts a number between bases.
+ * @param resource BigInt to convert
+ * @param int Base to convert from
+ * @param int Base to convert to
+ */
+
+ function basecon($int, $from, $to)
+ {
+ return bi_base_convert($this->str($int, $from), $from, $to);
+ }
+
+ /**
+ * Powmod operation (calculates (a ^ b) mod m)
+ * @param resource a
+ * @param resource b
+ * @param resource m
+ * @return resource
+ */
+
+ function powmod($a, $b, $m)
+ {
+ $a = $this->init($a);
+ $b = $this->init($b);
+ $m = $this->init($m);
+ return bi_powmod($a, $b, $m);
+ }
}
/**
@@ -162,129 +162,129 @@
class EnanoMath_BCMath
{
- var $api = 'BCMath';
-
- /**
- * Initializes a number to a BCMath integer.
- * @param string String representation of the number
- * @param int Base the number is in, defaults to 10
- * @return resource
- */
-
- function init($int, $base = 10)
- {
- return $this->basecon($int, $base, 10);
- }
-
- /**
- * Converts a number from a BCMath integer to a string
- * @param resource
- * @param int Base, default is 10
- * @return string
- */
-
- function str($res)
- {
- return ( is_string($res) ) ? $res : strval($this->basecon($res, 10, $base));
- }
-
- /**
- * Generates a random integer
- * @param int Length in bits
- * @return resource
- */
-
- function random($len)
- {
- $len = 4 * $len;
- $chars = '0123456789abcdef';
- $ret = '';
- for ( $i = 0; $i < $len; $i++ )
- {
- $chid = mt_rand ( 0, strlen($chars) - 1 );
- $chr = $chars{$chid};
- $ret .= $chr;
- }
- return $this->basecon($this->init($ret), 16, 10);
- }
-
- /**
- * Converts a number between bases.
- * @param resource BigInt to convert
- * @param int Base to convert from
- * @param int Base to convert to
- */
-
- function basecon($int, $from, $to)
- {
- if ( $from != 10 )
- $int = $this->_bcmath_base2dec($int, $from);
- if ( $to != 10 )
- $int = $this->_bcmath_dec2base($int, $to);
- return $int;
- }
-
- /**
- * Powmod operation (calculates (a ^ b) mod m)
- * @param resource a
- * @param resource b
- * @param resource m
- * @return resource
- */
-
- function powmod($a, $b, $m)
- {
- $a = $this->init($a);
- $b = $this->init($b);
- $m = $this->init($m);
- return ( function_exists('bcpowmod') ) ? bcpowmod($a, $b, $m) : bcmod( bcpow($a, $b), $m );
- }
-
- // from us.php.net/bc:
- // convert a decimal value to any other base value
- function _bcmath_dec2base($dec,$base,$digits=FALSE) {
- if($base<2 or $base>256) die("Invalid Base: ".$base);
- bcscale(0);
- $value="";
- if(!$digits) $digits=$this->_bcmath_digits($base);
- while($dec>$base-1) {
- $rest=bcmod($dec,$base);
- $dec=bcdiv($dec,$base);
- $value=$digits[$rest].$value;
- }
- $value=$digits[intval($dec)].$value;
- return (string) $value;
- }
-
- // convert another base value to its decimal value
- function _bcmath_base2dec($value,$base,$digits=FALSE) {
- if($base<2 or $base>256) die("Invalid Base: ".$base);
- bcscale(0);
- if($base<37) $value=strtolower($value);
- if(!$digits) $digits=$this->_bcmath_digits($base);
- $size=strlen($value);
- $dec="0";
- for($loop=0;$loop<$size;$loop++) {
- $element=strpos($digits,$value[$loop]);
- $power=bcpow($base,$size-$loop-1);
- $dec=bcadd($dec,bcmul($element,$power));
- }
- return (string) $dec;
- }
-
- function _bcmath_digits($base) {
- if($base>64) {
- $digits="";
- for($loop=0;$loop<256;$loop++) {
- $digits.=chr($loop);
- }
- } else {
- $digits ="0123456789abcdefghijklmnopqrstuvwxyz";
- $digits.="ABCDEFGHIJKLMNOPQRSTUVWXYZ-_";
- }
- $digits=substr($digits,0,$base);
- return (string) $digits;
- }
+ var $api = 'BCMath';
+
+ /**
+ * Initializes a number to a BCMath integer.
+ * @param string String representation of the number
+ * @param int Base the number is in, defaults to 10
+ * @return resource
+ */
+
+ function init($int, $base = 10)
+ {
+ return $this->basecon($int, $base, 10);
+ }
+
+ /**
+ * Converts a number from a BCMath integer to a string
+ * @param resource
+ * @param int Base, default is 10
+ * @return string
+ */
+
+ function str($res)
+ {
+ return ( is_string($res) ) ? $res : strval($this->basecon($res, 10, $base));
+ }
+
+ /**
+ * Generates a random integer
+ * @param int Length in bits
+ * @return resource
+ */
+
+ function random($len)
+ {
+ $len = 4 * $len;
+ $chars = '0123456789abcdef';
+ $ret = '';
+ for ( $i = 0; $i < $len; $i++ )
+ {
+ $chid = mt_rand ( 0, strlen($chars) - 1 );
+ $chr = $chars{$chid};
+ $ret .= $chr;
+ }
+ return $this->basecon($this->init($ret), 16, 10);
+ }
+
+ /**
+ * Converts a number between bases.
+ * @param resource BigInt to convert
+ * @param int Base to convert from
+ * @param int Base to convert to
+ */
+
+ function basecon($int, $from, $to)
+ {
+ if ( $from != 10 )
+ $int = $this->_bcmath_base2dec($int, $from);
+ if ( $to != 10 )
+ $int = $this->_bcmath_dec2base($int, $to);
+ return $int;
+ }
+
+ /**
+ * Powmod operation (calculates (a ^ b) mod m)
+ * @param resource a
+ * @param resource b
+ * @param resource m
+ * @return resource
+ */
+
+ function powmod($a, $b, $m)
+ {
+ $a = $this->init($a);
+ $b = $this->init($b);
+ $m = $this->init($m);
+ return ( function_exists('bcpowmod') ) ? bcpowmod($a, $b, $m) : bcmod( bcpow($a, $b), $m );
+ }
+
+ // from us.php.net/bc:
+ // convert a decimal value to any other base value
+ function _bcmath_dec2base($dec,$base,$digits=FALSE) {
+ if($base<2 or $base>256) die("Invalid Base: ".$base);
+ bcscale(0);
+ $value="";
+ if(!$digits) $digits=$this->_bcmath_digits($base);
+ while($dec>$base-1) {
+ $rest=bcmod($dec,$base);
+ $dec=bcdiv($dec,$base);
+ $value=$digits[$rest].$value;
+ }
+ $value=$digits[intval($dec)].$value;
+ return (string) $value;
+ }
+
+ // convert another base value to its decimal value
+ function _bcmath_base2dec($value,$base,$digits=FALSE) {
+ if($base<2 or $base>256) die("Invalid Base: ".$base);
+ bcscale(0);
+ if($base<37) $value=strtolower($value);
+ if(!$digits) $digits=$this->_bcmath_digits($base);
+ $size=strlen($value);
+ $dec="0";
+ for($loop=0;$loop<$size;$loop++) {
+ $element=strpos($digits,$value[$loop]);
+ $power=bcpow($base,$size-$loop-1);
+ $dec=bcadd($dec,bcmul($element,$power));
+ }
+ return (string) $dec;
+ }
+
+ function _bcmath_digits($base) {
+ if($base>64) {
+ $digits="";
+ for($loop=0;$loop<256;$loop++) {
+ $digits.=chr($loop);
+ }
+ } else {
+ $digits ="0123456789abcdefghijklmnopqrstuvwxyz";
+ $digits.="ABCDEFGHIJKLMNOPQRSTUVWXYZ-_";
+ }
+ $digits=substr($digits,0,$base);
+ return (string) $digits;
+ }
}
/**
@@ -294,14 +294,14 @@
function enanomath_create()
{
- if ( function_exists('gmp_init') )
- return new EnanoMath_GMP();
- else if ( function_exists('bi_from_str') )
- return new EnanoMath_BigInt();
- else if ( function_exists('bcadd') )
- return new EnanoMath_BCMath();
- else
- throw new Exception('dh_err_not_supported');
+ if ( function_exists('gmp_init') )
+ return new EnanoMath_GMP();
+ else if ( function_exists('bi_from_str') )
+ return new EnanoMath_BigInt();
+ else if ( function_exists('bcadd') )
+ return new EnanoMath_BCMath();
+ else
+ throw new Exception('dh_err_not_supported');
}
?>