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- // (C) Copyright John Maddock 2019.
- // Use, modification and distribution are subject to the
- // Boost Software License, Version 1.0. (See accompanying file
- // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- #include <boost/config.hpp>
- #include <boost/multiprecision/number.hpp>
- #include <limits>
- // clang-format off
- template <class T, class U>
- BOOST_CXX14_CONSTEXPR T do_test_constexpr_add_subtract(T a, U b)
- {
- a = +b;
- if constexpr(std::numeric_limits<U>::is_signed && std::numeric_limits<T>::is_signed)
- b = -b;
- a += b;
- a += a;
- a -= b;
- a -= a;
- ++a;
- --a;
- T bb(b);
- a += bb++;
- a += bb--;
- a = a + b;
- a += a - b;
- if constexpr(std::numeric_limits<U>::is_signed && std::numeric_limits<T>::is_signed)
- a -= b - -a;
- a += b + a;
- if constexpr(std::numeric_limits<T>::is_signed)
- {
- a = -a;
- if constexpr(std::numeric_limits<U>::is_signed)
- a -= b;
- }
- return a;
- }
- template <class T>
- BOOST_CXX14_CONSTEXPR T test_constexpr_add_subtract(T a)
- {
- a += do_test_constexpr_add_subtract(a, a);
- a += do_test_constexpr_add_subtract(a, static_cast<unsigned char>(2));
- a += do_test_constexpr_add_subtract(a, static_cast<signed char>(2));
- a += do_test_constexpr_add_subtract(a, static_cast<char>(2));
- a += do_test_constexpr_add_subtract(a, static_cast<short>(2));
- a += do_test_constexpr_add_subtract(a, static_cast<unsigned short>(2));
- a += do_test_constexpr_add_subtract(a, static_cast<int>(2));
- a += do_test_constexpr_add_subtract(a, static_cast<unsigned int>(2));
- a += do_test_constexpr_add_subtract(a, static_cast<long>(2));
- a += do_test_constexpr_add_subtract(a, static_cast<unsigned long>(2));
- a += do_test_constexpr_add_subtract(a, static_cast<long long>(2));
- a += do_test_constexpr_add_subtract(a, static_cast<unsigned long long>(2));
- #ifdef BOOST_HAS_INT128
- a += do_test_constexpr_add_subtract(a, static_cast<__int128>(2));
- a += do_test_constexpr_add_subtract(a, static_cast<unsigned __int128>(2));
- a -= do_test_constexpr_add_subtract(a, static_cast<__int128>(2));
- a -= do_test_constexpr_add_subtract(a, static_cast<unsigned __int128>(2));
- #endif
- if constexpr (boost::multiprecision::number_category<T>::value == boost::multiprecision::number_kind_floating_point)
- {
- a += do_test_constexpr_add_subtract(a, static_cast<float>(2));
- a += do_test_constexpr_add_subtract(a, static_cast<double>(2));
- a += do_test_constexpr_add_subtract(a, static_cast<long double>(2));
- #ifdef BOOST_HAS_FLOAT128
- a += do_test_constexpr_add_subtract(a, static_cast<__float128>(2));
- #endif
- }
- return a;
- }
- template <class T, class U>
- BOOST_CXX14_CONSTEXPR T do_test_constexpr_mul_divide(T a, U b)
- {
- a *= b;
- a = a * b;
- if constexpr(std::numeric_limits<T>::is_signed && std::numeric_limits<U>::is_signed)
- {
- a *= -b;
- a = a * -b;
- }
- a /= b;
- a = a / b;
- if constexpr(std::numeric_limits<T>::is_signed && std::numeric_limits<U>::is_signed)
- {
- a /= -b;
- a = a / -b;
- }
- if constexpr (boost::multiprecision::number_category<T>::value == boost::multiprecision::number_kind_integer && boost::multiprecision::number_category<U>::value == boost::multiprecision::number_kind_integer)
- {
- a %= b;
- a = a % b;
- }
- return a;
- }
- template <class T>
- BOOST_CXX14_CONSTEXPR T test_constexpr_mul_divide(T a)
- {
- a += do_test_constexpr_mul_divide(a, a);
- a += do_test_constexpr_mul_divide(a, static_cast<unsigned char>(2));
- a += do_test_constexpr_mul_divide(a, static_cast<signed char>(2));
- a += do_test_constexpr_mul_divide(a, static_cast<char>(2));
- a += do_test_constexpr_mul_divide(a, static_cast<short>(2));
- a += do_test_constexpr_mul_divide(a, static_cast<unsigned short>(2));
- a += do_test_constexpr_mul_divide(a, static_cast<int>(2));
- a += do_test_constexpr_mul_divide(a, static_cast<unsigned int>(2));
- a += do_test_constexpr_mul_divide(a, static_cast<long>(2));
- a += do_test_constexpr_mul_divide(a, static_cast<unsigned long>(2));
- a += do_test_constexpr_mul_divide(a, static_cast<long long>(2));
- a += do_test_constexpr_mul_divide(a, static_cast<unsigned long long>(2));
- #ifdef BOOST_HAS_INT128
- a += do_test_constexpr_mul_divide(a, static_cast<__int128>(2));
- a += do_test_constexpr_mul_divide(a, static_cast<unsigned __int128>(2));
- a -= do_test_constexpr_mul_divide(a, static_cast<__int128>(2));
- a -= do_test_constexpr_mul_divide(a, static_cast<unsigned __int128>(2));
- #endif
- if constexpr (boost::multiprecision::number_category<T>::value == boost::multiprecision::number_kind_floating_point)
- {
- a += do_test_constexpr_mul_divide(a, static_cast<float>(2));
- a += do_test_constexpr_mul_divide(a, static_cast<double>(2));
- a += do_test_constexpr_mul_divide(a, static_cast<long double>(2));
- #ifdef BOOST_HAS_FLOAT128
- a += do_test_constexpr_mul_divide(a, static_cast<__float128>(2));
- #endif
- }
- return a;
- }
- template <class T, class U>
- BOOST_CXX14_CONSTEXPR T do_test_constexpr_bitwise(T a, U b)
- {
- a |= b;
- a &= b;
- a <<= 2;
- a ^= b;
- a = a | b;
- a = a & b;
- a <<= 2;
- a = a ^ b;
- if constexpr (std::numeric_limits<T>::is_signed == false)
- {
- a = ~a;
- a >>= std::numeric_limits<T>::digits - 3;
- }
- a <<= 5;
- a = a << 2;
- a >>= 5;
- a = a >> 2;
- return a;
- }
- template <class T>
- BOOST_CXX14_CONSTEXPR T test_constexpr_bitwise(T a)
- {
- a += do_test_constexpr_bitwise(a, a);
- a += do_test_constexpr_bitwise(a, static_cast<unsigned char>(2));
- a += do_test_constexpr_bitwise(a, static_cast<signed char>(2));
- a += do_test_constexpr_bitwise(a, static_cast<char>(2));
- a += do_test_constexpr_bitwise(a, static_cast<short>(2));
- a += do_test_constexpr_bitwise(a, static_cast<unsigned short>(2));
- a += do_test_constexpr_bitwise(a, static_cast<int>(2));
- a += do_test_constexpr_bitwise(a, static_cast<unsigned int>(2));
- a += do_test_constexpr_bitwise(a, static_cast<long>(2));
- a += do_test_constexpr_bitwise(a, static_cast<unsigned long>(2));
- a += do_test_constexpr_bitwise(a, static_cast<long long>(2));
- a += do_test_constexpr_bitwise(a, static_cast<unsigned long long>(2));
- #ifdef BOOST_HAS_INT128
- a += do_test_constexpr_bitwise(a, static_cast<__int128>(2));
- a += do_test_constexpr_bitwise(a, static_cast<unsigned __int128>(2));
- #endif
- return a;
- }
- template <class T, class U>
- BOOST_CXX14_CONSTEXPR T do_test_constexpr_logical(T a, U b)
- {
- T result(0);
- if(a || b)
- ++result;
- if(b || a)
- ++result;
- if(a && b)
- ++result;
- if(b && a)
- ++result;
- if(a)
- ++result;
- if(!a)
- ++result;
- return result;
- }
- template <class T>
- BOOST_CXX14_CONSTEXPR T test_constexpr_logical(T a)
- {
- a += do_test_constexpr_logical(a, a);
- a += do_test_constexpr_logical(a, static_cast<unsigned char>(2));
- a += do_test_constexpr_logical(a, static_cast<signed char>(2));
- a += do_test_constexpr_logical(a, static_cast<char>(2));
- a += do_test_constexpr_logical(a, static_cast<short>(2));
- a += do_test_constexpr_logical(a, static_cast<unsigned short>(2));
- a += do_test_constexpr_logical(a, static_cast<int>(2));
- a += do_test_constexpr_logical(a, static_cast<unsigned int>(2));
- a += do_test_constexpr_logical(a, static_cast<long>(2));
- a += do_test_constexpr_logical(a, static_cast<unsigned long>(2));
- a += do_test_constexpr_logical(a, static_cast<long long>(2));
- a += do_test_constexpr_logical(a, static_cast<unsigned long long>(2));
- #ifdef BOOST_HAS_INT128
- a += do_test_constexpr_logical(a, static_cast<__int128>(2));
- a += do_test_constexpr_logical(a, static_cast<unsigned __int128>(2));
- a -= do_test_constexpr_logical(a, static_cast<__int128>(2));
- a -= do_test_constexpr_logical(a, static_cast<unsigned __int128>(2));
- #endif
- return a;
- }
- template <class T, class U>
- BOOST_CXX14_CONSTEXPR T do_test_constexpr_compare(T a, U b)
- {
- T result(0);
- if(a == b)
- ++result;
- if(b == a)
- ++result;
- if(a != b)
- ++result;
- if(b != a)
- ++result;
- if(a < b)
- ++result;
- if(b < a)
- ++result;
- if(a <= b)
- ++result;
- if(b <= a)
- ++result;
- if(a > b)
- ++result;
- if(b > a)
- ++result;
- if(a >= b)
- ++result;
- if(b >= a)
- ++result;
- T u(b);
- if(u == a)
- ++result;
- return result;
- }
- template <class T>
- BOOST_CXX14_CONSTEXPR T test_constexpr_compare(T a)
- {
- a += do_test_constexpr_compare(a, a);
- a += do_test_constexpr_compare(a, static_cast<unsigned char>(2));
- a += do_test_constexpr_compare(a, static_cast<signed char>(2));
- a += do_test_constexpr_compare(a, static_cast<char>(2));
- a += do_test_constexpr_compare(a, static_cast<short>(2));
- a += do_test_constexpr_compare(a, static_cast<unsigned short>(2));
- a += do_test_constexpr_compare(a, static_cast<int>(2));
- a += do_test_constexpr_compare(a, static_cast<unsigned int>(2));
- a += do_test_constexpr_compare(a, static_cast<long>(2));
- a += do_test_constexpr_compare(a, static_cast<unsigned long>(2));
- a += do_test_constexpr_compare(a, static_cast<long long>(2));
- a += do_test_constexpr_compare(a, static_cast<unsigned long long>(2));
- #ifdef BOOST_HAS_INT128
- a += do_test_constexpr_compare(a, static_cast<__int128>(2));
- a += do_test_constexpr_compare(a, static_cast<unsigned __int128>(2));
- a -= do_test_constexpr_compare(a, static_cast<__int128>(2));
- a -= do_test_constexpr_compare(a, static_cast<unsigned __int128>(2));
- #endif
- if constexpr (boost::multiprecision::number_category<T>::value == boost::multiprecision::number_kind_floating_point)
- {
- a += do_test_constexpr_compare(a, static_cast<float>(2));
- a += do_test_constexpr_compare(a, static_cast<double>(2));
- a += do_test_constexpr_compare(a, static_cast<long double>(2));
- #ifdef BOOST_HAS_FLOAT128
- a += do_test_constexpr_compare(a, static_cast<__float128>(2));
- #endif
- }
- return a;
- }
- // clang-format on
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