Ceil function: how can we implement it ourselves?

Question

I know that C++ provides us with a ceil function. For practice, I was wondering how can we implement the ceil function in C++. The signature of the method is public static

Answer 1

My 5 cents:

template 
inline auto ceil(F const f) noexcept
{
  auto const t(std::trunc(f));

  return t + (t < f);
}