crc32 static method

int crc32(
  1. String? pid, [
  2. int crc = 0xffffffff
])

Implementation

static int crc32(String? pid, [int crc = 0xffffffff]) {
  crc = ~crc;
  if (pid == null) {
    return 0;
  }
  List<int> data = utf8.encode(pid);

  for (int i = 0; i < data.length; i++) {
    int c = data[i];
    crc = (crc >> 4) ^ s_crc32[(crc & 0xF) ^ (c & 0xF)];
    crc = (crc >> 4) ^ s_crc32[(crc & 0xF) ^ (c >> 4)];
  }
  return ~crc;
}