pow.hpp

#ifndef CONSTMATH_POW_HPP
#define CONSTMATH_POW_HPP
 
namespace consteig
{
 
 
template <typename T> constexpr T pow(const T x, const unsigned int n)
{
    return n == 0       ? static_cast<T>(1)
           : n % 2 == 0 ? pow(x * x, n / 2)
                        : pow(x * x, (n - 1) / 2) * x;
}
 
template <typename T> constexpr T pow(const T x, const int n)
{
    return n < 0 ? static_cast<T>(1) / pow(x, static_cast<unsigned int>(-n))
                 : pow(x, static_cast<unsigned int>(n));
}
 
 
} // namespace consteig
 
#endif