| //===----------------------------------------------------------------------===// |
| // 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 |
| //===----------------------------------------------------------------------===// |
| // template <CopyConstructible Arg, Returnable Result> |
| // pointer_to_unary_function<Arg, Result> |
| // ptr_fun(Result (*f)(Arg)); |
| // UNSUPPORTED: c++98, c++03, c++11, c++14 |
| double unary_f(int i) {return 0.5 - i;} |
| assert(std::ptr_fun(unary_f)(36) == -35.5); |