brintos

brintos / llvm-project-archived public Read only

0
0
Text · 1.6 KiB · 5d09600 Raw
46 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// UNSUPPORTED: c++03, c++1110#include <functional>11#include <string>12 13#include "test_macros.h"14 15template <class T>16struct is_transparent17{18private:19    struct two {char lx; char lxx;};20    template <class U> static two test(...);21    template <class U> static char test(typename U::is_transparent* = 0);22public:23    static const bool value = sizeof(test<T>(0)) == 1;24};25 26 27int main(int, char**)28{29    static_assert ( !is_transparent<std::logical_and<int>>::value, "" );30    static_assert ( !is_transparent<std::logical_and<std::string>>::value, "" );31    static_assert (  is_transparent<std::logical_and<void>>::value, "" );32    static_assert (  is_transparent<std::logical_and<>>::value, "" );33 34    static_assert ( !is_transparent<std::logical_or<int>>::value, "" );35    static_assert ( !is_transparent<std::logical_or<std::string>>::value, "" );36    static_assert (  is_transparent<std::logical_or<void>>::value, "" );37    static_assert (  is_transparent<std::logical_or<>>::value, "" );38 39    static_assert ( !is_transparent<std::logical_not<int>>::value, "" );40    static_assert ( !is_transparent<std::logical_not<std::string>>::value, "" );41    static_assert (  is_transparent<std::logical_not<void>>::value, "" );42    static_assert (  is_transparent<std::logical_not<>>::value, "" );43 44    return 0;45}46