$jf function Null safety

int $jf(
  1. int hash
)

For use by generated code in calculating hash codes. Do not use directly.

Implementation

int $jf(int hash) {
  // Jenkins hash "finish".
  hash = 0x1fffffff & (hash + ((0x03ffffff & hash) << 3));
  hash = hash ^ (hash >> 11);
  return 0x1fffffff & (hash + ((0x00003fff & hash) << 15));
}