std::remainder(x,y) and std::remquo(x, y, z) are not optimized at the compilation time when (x, y) is constant

Consider the following example.
https://godbolt.org/z/94qo7q4vd
```cpp
#include <cmath>

double f1() 
{
  return std::fmod(-5.0, 3.0);
}

double f2() 
{
  return std::remainder(-5.0, 3.0);
}

double f3()
{
  int quo;
  return std::remquo(-5.0, 3.0, &quo);
}
```

The above `f2()` is optimized when `-ffast-math` is enabled.