minus.pass.cpp revision ff46409221ea91df3c5413ba06eed2f6ba963444 
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <functional>
11
12// minus
13
14#include <functional>
15#include <type_traits>
16#include <cassert>
17
18int main()
19{
20    typedef std::minus<int> F;
21    const F f = F();
22    static_assert((std::is_base_of<std::binary_function<int, int, int>, F>::value), "");
23    assert(f(3, 2) == 1);
24#if _LIBCPP_STD_VER > 11
25    typedef std::minus<> F2;
26    const F2 f2 = F2();
27    assert(f2(3,2) == 1);
28    assert(f2(3.0, 2) == 1);
29    assert(f2(3, 2.5) == 0.5);
30#endif
31}
32