Files
clang-p2996/libcxx/test/std/utilities/meta/meta.logical/negation.pass.cpp
Louis Dionne 31cbe0f240 [libc++] Remove the c++98 Lit feature from the test suite
C++98 and C++03 are effectively aliases as far as Clang is concerned.
As such, allowing both std=c++98 and std=c++03 as Lit parameters is
just slightly confusing, but provides no value. It's similar to allowing
both std=c++17 and std=c++1z, which we don't do.

This was discovered because we had an internal bot that ran the test
suite under both c++98 AND c++03 -- one of which is redundant.

Differential Revision: https://reviews.llvm.org/D80926
2020-06-03 09:37:22 -04:00

43 lines
1.4 KiB
C++

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
// type_traits
// template<class B> struct negation; // C++17
// template<class B>
// constexpr bool negation_v = negation<B>::value; // C++17
#include <type_traits>
#include <cassert>
#include "test_macros.h"
struct True { static constexpr bool value = true; };
struct False { static constexpr bool value = false; };
int main(int, char**)
{
static_assert (!std::negation<std::true_type >::value, "" );
static_assert ( std::negation<std::false_type>::value, "" );
static_assert (!std::negation_v<std::true_type >, "" );
static_assert ( std::negation_v<std::false_type>, "" );
static_assert (!std::negation<True >::value, "" );
static_assert ( std::negation<False>::value, "" );
static_assert (!std::negation_v<True >, "" );
static_assert ( std::negation_v<False>, "" );
static_assert ( std::negation<std::negation<std::true_type >>::value, "" );
static_assert (!std::negation<std::negation<std::false_type>>::value, "" );
return 0;
}