Function BM_ReadNum

tensorflow/core/lib/strings/ordered_code_test.cc:398–414

template <typename T>
void BM_ReadNum(int n, T multiplier) {
  random::PhiloxRandom philox(301, 17);
  random::SimplePhilox rnd(&philox);
  // Use enough distinct values to confuse the branch predictor
  constexpr int kValues = 64;
  string values[kValues];
  for (int i = 0; i < kValues; i++) {
    T val = NextBits(&rnd, i % 64) * multiplier;
    values[i] = OCWrite<T>(val);
  }
  uint32 index = 0;
  while (n-- > 0) {
    T val;
    StringPiece s = values[index++ % kValues];
    OCRead<T>(&s, &val);
  }
}

#define BENCHMARK_NUM(name, T, multiplier)                      \
  void BM_Write##name(int n) { BM_WriteNum<T>(n, multiplier); } \