104 lines
1.7 KiB
PHP
104 lines
1.7 KiB
PHP
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<?php
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if (!function_exists('arraycopy')) {
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function arraycopy($srcArray, $srcPos, $destArray, $destPos, $length)
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{
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$srcArrayToCopy = array_slice($srcArray, $srcPos, $length);
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array_splice($destArray, $destPos, $length, $srcArrayToCopy);
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return $destArray;
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}
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}
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if (!function_exists('hashCode')) {
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function hashCode($s)
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{
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$h = 0;
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$len = strlen((string) $s);
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for ($i = 0; $i < $len; $i++) {
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$h = (31 * $h + ord($s[$i]));
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}
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return $h;
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}
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}
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if (!function_exists('numberOfTrailingZeros')) {
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function numberOfTrailingZeros($i)
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{
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if ($i == 0) {
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return 32;
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}
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$num = 0;
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while (($i & 1) == 0) {
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$i >>= 1;
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$num++;
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}
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return $num;
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}
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}
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if (!function_exists('uRShift')) {
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function uRShift($a, $b)
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{
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static $mask = (8 * PHP_INT_SIZE - 1);
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if ($b === 0) {
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return $a;
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}
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return ($a >> $b) & ~(1 << $mask >> ($b - 1));
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}
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}
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/*
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function sdvig3($num,$count=1){//>>> 32 bit
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$s = decbin($num);
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$sarray = str_split($s,1);
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$sarray = array_slice($sarray,-32);//32bit
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for($i=0;$i<=1;$i++) {
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array_pop($sarray);
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array_unshift($sarray, '0');
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}
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return bindec(implode($sarray));
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}
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*/
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if (!function_exists('sdvig3')) {
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function sdvig3($a, $b)
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{
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if ($a >= 0) {
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return bindec(decbin($a >> $b)); //simply right shift for positive number
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}
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$bin = decbin($a >> $b);
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$bin = substr($bin, $b); // zero fill on the left side
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return bindec($bin);
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}
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}
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if (!function_exists('floatToIntBits')) {
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function floatToIntBits($float_val)
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{
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$int = unpack('i', pack('f', $float_val));
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return $int[1];
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}
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}
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if (!function_exists('fill_array')) {
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function fill_array($index, $count, $value)
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{
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if ($count <= 0) {
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return [0];
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}
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return array_fill($index, $count, $value);
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}
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}
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