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libcxx/test/std/utilities/function.objects/negators/unary_negate.pass.cpp

27 lines
749 B
C++

//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// <functional>
// unary_negate
#include <functional>
#include <type_traits>
#include <cassert>
int main()
{
typedef std::unary_negate<std::logical_not<int> > F;
const F f = F(std::logical_not<int>());
static_assert((std::is_same<F::argument_type, int>::value), "" );
static_assert((std::is_same<F::result_type, bool>::value), "" );
assert(f(36));
assert(!f(0));
}