Function __QueryPerformanceFrequency

system/lib/libcxx/src/chrono.cpp:194–198

//      and will thus never return zero.

static LARGE_INTEGER __QueryPerformanceFrequency() {
  LARGE_INTEGER val;
  (void)QueryPerformanceFrequency(&val);
  return val;
}

static steady_clock::time_point __libcpp_steady_clock_now() {
  static const LARGE_INTEGER freq = __QueryPerformanceFrequency();