lossless_type_int_division.hpp

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# /*
#  * Created by YongGyu Lee on 2020/12/08.
#  */
#
# ifndef VCCC_TYPE_TRAITS_DETAIL_LOSSLESS_TYPE_INT_DIVISION_HPP
# define VCCC_TYPE_TRAITS_DETAIL_LOSSLESS_TYPE_INT_DIVISION_HPP
#
# include <type_traits>
# include <algorithm>
 
namespace vccc {
 
namespace internal {
 
// left for specialization
template<typename...> struct lossless_type_int_division;
 
template<typename T1, typename T2>
struct lossless_type_int_division<T1, T2> {
  using type = std::conditional_t<(sizeof(T1) > sizeof(T2) ? sizeof(T1) : sizeof(T2)) <= 4, float, double>;
};
 
template<typename T1, typename T2>
using lossless_type_int_division_t = typename lossless_type_int_division<T1, T2>::type;
 
} // namespace internal
 
} // namespace vccc
 
# endif // VCCC_TYPE_TRAITS_DETAIL_LOSSLESS_TYPE_INT_DIVISION_HPP