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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11
#include <functional>
#include <string>
template <class T>
struct is_transparent
{
private:
struct two {char lx; char lxx;};
template <class U> static two test(...);
template <class U> static char test(typename U::is_transparent* = 0);
public:
static const bool value = sizeof(test<T>(0)) == 1;
};
int main ()
{
static_assert ( !is_transparent<std::logical_and<int>>::value, "" );
static_assert ( !is_transparent<std::logical_and<std::string>>::value, "" );
static_assert ( is_transparent<std::logical_and<void>>::value, "" );
static_assert ( is_transparent<std::logical_and<>>::value, "" );
static_assert ( !is_transparent<std::logical_or<int>>::value, "" );
static_assert ( !is_transparent<std::logical_or<std::string>>::value, "" );
static_assert ( is_transparent<std::logical_or<void>>::value, "" );
static_assert ( is_transparent<std::logical_or<>>::value, "" );
static_assert ( !is_transparent<std::logical_not<int>>::value, "" );
static_assert ( !is_transparent<std::logical_not<std::string>>::value, "" );
static_assert ( is_transparent<std::logical_not<void>>::value, "" );
static_assert ( is_transparent<std::logical_not<>>::value, "" );
return 0;
}
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