negate.pass.cpp revision f5256e16dfc425c1d466f6308d4026d529ce9e0b 
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <functional>
11
12// negate
13
14#include <functional>
15#include <type_traits>
16#include <cassert>
17
18int main()
19{
20    typedef std::negate<int> F;
21    const F f = F();
22    static_assert((std::is_base_of<std::unary_function<int, int>, F>::value), "");
23    assert(f(36) == -36);
24}
25