atcoder/internal_type_traits.hpp

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Last update: 2020-10-30 19:21:58+09:00
Include: #include "atcoder/internal_type_traits.hpp"

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#ifndef ATCODER_INTERNAL_TYPE_TRAITS_HPP
#define ATCODER_INTERNAL_TYPE_TRAITS_HPP 1

#include <cassert>
#include <numeric>
#include <type_traits>

namespace atcoder {

	namespace internal {

#ifndef _MSC_VER
		template <class T>
		using is_signed_int128 =
		    typename std::conditional<std::is_same<T, __int128_t>::value || std::is_same<T, __int128>::value,
		                              std::true_type, std::false_type>::type;

		template <class T>
		using is_unsigned_int128 =
		    typename std::conditional<std::is_same<T, __uint128_t>::value || std::is_same<T, unsigned __int128>::value,
		                              std::true_type, std::false_type>::type;

		template <class T>
		using make_unsigned_int128 =
		    typename std::conditional<std::is_same<T, __int128_t>::value, __uint128_t, unsigned __int128>;

		template <class T>
		using is_integral = typename std::conditional<std::is_integral<T>::value || is_signed_int128<T>::value ||
		                                                  is_unsigned_int128<T>::value,
		                                              std::true_type, std::false_type>::type;

		template <class T>
		using is_signed_int =
		    typename std::conditional<(is_integral<T>::value && std::is_signed<T>::value) || is_signed_int128<T>::value,
		                              std::true_type, std::false_type>::type;

		template <class T>
		using is_unsigned_int = typename std::conditional<(is_integral<T>::value && std::is_unsigned<T>::value) ||
		                                                      is_unsigned_int128<T>::value,
		                                                  std::true_type, std::false_type>::type;

		template <class T>
		using to_unsigned =
		    typename std::conditional<is_signed_int128<T>::value, make_unsigned_int128<T>,
		                              typename std::conditional<std::is_signed<T>::value, std::make_unsigned<T>,
		                                                        std::common_type<T>>::type>::type;

#else

		template <class T> using is_integral = typename std::is_integral<T>;

		template <class T>
		using is_signed_int = typename std::conditional<is_integral<T>::value && std::is_signed<T>::value,
		                                                std::true_type, std::false_type>::type;

		template <class T>
		using is_unsigned_int = typename std::conditional<is_integral<T>::value && std::is_unsigned<T>::value,
		                                                  std::true_type, std::false_type>::type;

		template <class T>
		using to_unsigned =
		    typename std::conditional<is_signed_int<T>::value, std::make_unsigned<T>, std::common_type<T>>::type;

#endif

		template <class T> using is_signed_int_t = std::enable_if_t<is_signed_int<T>::value>;

		template <class T> using is_unsigned_int_t = std::enable_if_t<is_unsigned_int<T>::value>;

		template <class T> using to_unsigned_t = typename to_unsigned<T>::type;

	}  // namespace internal

}  // namespace atcoder

#endif  // ATCODER_INTERNAL_TYPE_TRAITS_HPP

#line 1 "atcoder/internal_type_traits.hpp"



#include <cassert>
#include <numeric>
#include <type_traits>

namespace atcoder {

	namespace internal {

#ifndef _MSC_VER
		template <class T>
		using is_signed_int128 =
		    typename std::conditional<std::is_same<T, __int128_t>::value || std::is_same<T, __int128>::value,
		                              std::true_type, std::false_type>::type;

		template <class T>
		using is_unsigned_int128 =
		    typename std::conditional<std::is_same<T, __uint128_t>::value || std::is_same<T, unsigned __int128>::value,
		                              std::true_type, std::false_type>::type;

		template <class T>
		using make_unsigned_int128 =
		    typename std::conditional<std::is_same<T, __int128_t>::value, __uint128_t, unsigned __int128>;

		template <class T>
		using is_integral = typename std::conditional<std::is_integral<T>::value || is_signed_int128<T>::value ||
		                                                  is_unsigned_int128<T>::value,
		                                              std::true_type, std::false_type>::type;

		template <class T>
		using is_signed_int =
		    typename std::conditional<(is_integral<T>::value && std::is_signed<T>::value) || is_signed_int128<T>::value,
		                              std::true_type, std::false_type>::type;

		template <class T>
		using is_unsigned_int = typename std::conditional<(is_integral<T>::value && std::is_unsigned<T>::value) ||
		                                                      is_unsigned_int128<T>::value,
		                                                  std::true_type, std::false_type>::type;

		template <class T>
		using to_unsigned =
		    typename std::conditional<is_signed_int128<T>::value, make_unsigned_int128<T>,
		                              typename std::conditional<std::is_signed<T>::value, std::make_unsigned<T>,
		                                                        std::common_type<T>>::type>::type;

#else

		template <class T> using is_integral = typename std::is_integral<T>;

		template <class T>
		using is_signed_int = typename std::conditional<is_integral<T>::value && std::is_signed<T>::value,
		                                                std::true_type, std::false_type>::type;

		template <class T>
		using is_unsigned_int = typename std::conditional<is_integral<T>::value && std::is_unsigned<T>::value,
		                                                  std::true_type, std::false_type>::type;

		template <class T>
		using to_unsigned =
		    typename std::conditional<is_signed_int<T>::value, std::make_unsigned<T>, std::common_type<T>>::type;

#endif

		template <class T> using is_signed_int_t = std::enable_if_t<is_signed_int<T>::value>;

		template <class T> using is_unsigned_int_t = std::enable_if_t<is_unsigned_int<T>::value>;

		template <class T> using to_unsigned_t = typename to_unsigned<T>::type;

	}  // namespace internal

}  // namespace atcoder