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hacky things D:

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Shoghi Cervantes 2014-04-08 16:22:52 +02:00
parent d6f4e77b6c
commit 1d40399b9c
1 changed files with 11 additions and 3 deletions
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14
src/pocketmine/utils/Random.php
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@ -68,9 +68,17 @@ class Random{
* @return int
*/
public function nextSignedInt(){
$this->x ^= ($this->x << 16) & INT32_MASK;
$this->x ^= ($this->x >> 5) & INT32_MASK;
$this->x ^= ($this->x << 1) & INT32_MASK;
if(INT32_MASK === -1){ //32 bit, do hacky things to shift sign
$this->x ^= $this->x << 16;
$hasBit = $this->x < 1;
$t = ($hasBit === true ? $this->x ^ ~0x7fffffff : $this->x) >> 5;
$this->x ^= ($hasBit === true ? $t ^ ~0x7fffffff : $t);
$this->x ^= $this->x << 1;
}else{ //64 bit
$this->x ^= ($this->x << 16) & INT32_MASK;
$this->x ^= $this->x >> 5;
$this->x ^= ($this->x << 1) & INT32_MASK;
}
$t = $this->x;
$this->x = $this->y;