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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <functional>
// negate
#include <functional>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
int main(int, char**)
{
typedef std::negate<int> F;
const F f = F();
static_assert((std::is_same<F::argument_type, int>::value), "" );
static_assert((std::is_same<F::result_type, int>::value), "" );
assert(f(36) == -36);
#if TEST_STD_VER > 11
typedef std::negate<> F2;
const F2 f2 = F2();
assert(f2(36) == -36);
assert(f2(36L) == -36);
assert(f2(36.0) == -36);
constexpr int foo = std::negate<int> () (3);
static_assert ( foo == -3, "" );
constexpr double bar = std::negate<> () (3.0);
static_assert ( bar == -3.0, "" );
#endif
return 0;
}
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