llvm-project/libcxx/test/utilities/function.objects/negators/unary_negate.pass.cpp

26 lines
679 B
C++

//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. 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_base_of<std::unary_function<int, bool>, F>::value), "");
assert(f(36));
assert(!f(0));
}