Function nextrand

third-party/lua-5.4.6/src/lmathlib.c:320–331

}

static Rand64 nextrand (Rand64 *state) {
  Rand64 state0 = state[0];
  Rand64 state1 = state[1];
  Rand64 state2 = state[2] ^ state0;
  Rand64 state3 = state[3] ^ state1;
  Rand64 res = rotl(state1 * 5, 7) * 9;
  state[0] = state0 ^ state3;
  state[1] = state1 ^ state2;
  state[2] = state2 ^ (state1 << 17);
  state[3] = rotl(state3, 45);
  return res;
}


/*