47 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS10 11// <functional>12 13// multiplies14 15#include <functional>16#include <type_traits>17#include <cassert>18 19#include "test_macros.h"20 21int main(int, char**)22{23 typedef std::multiplies<int> F;24 const F f = F();25#if TEST_STD_VER <= 1726 static_assert((std::is_same<int, F::first_argument_type>::value), "" );27 static_assert((std::is_same<int, F::second_argument_type>::value), "" );28 static_assert((std::is_same<int, F::result_type>::value), "" );29#endif30 assert(f(3, 2) == 6);31#if TEST_STD_VER > 1132 typedef std::multiplies<> F2;33 const F2 f2 = F2();34 assert(f2(3,2) == 6);35 assert(f2(3.0, 2) == 6);36 assert(f2(3, 2.5) == 7.5); // exact in binary37 38 constexpr int foo = std::multiplies<int> () (3, 2);39 static_assert ( foo == 6, "" );40 41 constexpr double bar = std::multiplies<> () (3.0, 2);42 static_assert ( bar == 6.0, "" );43#endif44 45 return 0;46}47