actionscript 3 - mcrypt_decrypt function stuck in eternal loop -

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i'm working through decryption function , have hit wall. i'm not experienced actionscript when run function goes on infinite loop.

private function mcrypt_decrypt(param1:array, param2:number,param3:number): array {  var _loc4_:* = -9.57401312e8;  while(_loc4_)  {     var param3:number = param3 - ((param2 << 4 ^ param2 >>> 5) + param2 ^ _loc4_ + param1[_loc4_ >>> 11 & 3]);     _loc4_ = _loc4_ - -1640531527;     var param2:number = param2 - ((param3 << 4 ^ param3 >>> 5) + param3 ^ _loc4_ + param1[_loc4_ & 3]);  }  return [param2,param3]; }

from testing see loc4 starts -9.57401312e8 , iteration continues -1640531527 removed each time, in case satisfy while condition? ideas?

your function stuck in eternal loop because of this:

_loc4_ = _loc4_ - -1640531527;

a double minus sign same plus sign. since value never zero, evaluation in loop returns true.


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