| //===----------------------------------------------------------------------===// |
| // |
| // 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> |
| // REQUIRES: c++98 || c++03 || c++11 || c++14 |
| |
| // pointer_to_unary_function |
| |
| #define _LIBCPP_DISABLE_DEPRECATION_WARNINGS |
| |
| #include <functional> |
| #include <type_traits> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| double unary_f(int i) {return 0.5 - i;} |
| |
| int main(int, char**) |
| { |
| typedef std::pointer_to_unary_function<int, double> F; |
| static_assert((std::is_base_of<std::unary_function<int, double>, F>::value), ""); |
| const F f(unary_f); |
| assert(f(36) == -35.5); |
| |
| return 0; |
| } |