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64-bit Random optimizations

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This commit is contained in:
Shoghi Cervantes 2014-09-12 12:58:21 +02:00
parent 83eb9f778a
commit 315ea2ea3c
1 changed files with 8 additions and 8 deletions
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16
src/pocketmine/utils/Random.php
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@ -46,7 +46,7 @@ class Random{
* @param int $seed Integer to be used as seed. * @param int $seed Integer to be used as seed.
*/ */
public function setSeed($seed){ public function setSeed($seed){
$this->seed = crc32(Binary::writeInt($seed)); $this->seed = crc32(pack("N", $seed));
} }
/** /**
@ -64,14 +64,14 @@ class Random{
* @return int * @return int
*/ */
public function nextSignedInt(){ public function nextSignedInt(){
$t = crc32(Binary::writeInt($this->seed)); $t = crc32(pack("N", $this->seed));
$this->seed ^= $t; $this->seed ^= $t;
if($t > 2147483647){ if(PHP_INT_SIZE === 8){
$t -= 4294967296; return $t << 32 >> 32;
}else{
return $t;
} }
return (int) $t;
} }
/** /**
@ -105,11 +105,11 @@ class Random{
* Returns a random integer between $start and $end * Returns a random integer between $start and $end
* *
* @param int $start default 0 * @param int $start default 0
* @param int $end default PHP_INT_MAX * @param int $end default 0x7fffffff
* *
* @return int * @return int
*/ */
public function nextRange($start = 0, $end = PHP_INT_MAX){ public function nextRange($start = 0, $end = 0x7fffffff){
return $start + ($this->nextInt() % ($end + 1 - $start)); return $start + ($this->nextInt() % ($end + 1 - $start));
} }