power10.hpp

#ifndef POWER10_HPP_
#define POWER10_HPP_

// Listing 51-6. Computing a Power of 10 at Compile Time
template<class T>
T constexpr power10_helper(T n, T result)
{
  return n == T{} ? result : power10_helper(n - T{1}, T{10} * result);
}

template<class T>
T constexpr power10(T n)
{
  return power10_helper(n, T{1});
}

#endif