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| 1 | // -*- C++ -*- |
|---|---|
| 2 | //===----------------------------------------------------------------------===// |
| 3 | // |
| 4 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 5 | // See https://llvm.org/LICENSE.txt for license information. |
| 6 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #ifndef _LIBCPP___CXX03___FUNCTIONAL_POINTER_TO_UNARY_FUNCTION_H |
| 11 | #define _LIBCPP___CXX03___FUNCTIONAL_POINTER_TO_UNARY_FUNCTION_H |
| 12 | |
| 13 | #include <__cxx03/__config> |
| 14 | #include <__cxx03/__functional/unary_function.h> |
| 15 | |
| 16 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 17 | # pragma GCC system_header |
| 18 | #endif |
| 19 | |
| 20 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 21 | |
| 22 | template <class _Arg, class _Result> |
| 23 | class _LIBCPP_TEMPLATE_VIS pointer_to_unary_function : public __unary_function<_Arg, _Result> { |
| 24 | _Result (*__f_)(_Arg); |
| 25 | |
| 26 | public: |
| 27 | _LIBCPP_HIDE_FROM_ABI explicit pointer_to_unary_function(_Result (*__f)(_Arg)) : __f_(__f) {} |
| 28 | _LIBCPP_HIDE_FROM_ABI _Result operator()(_Arg __x) const { return __f_(__x); } |
| 29 | }; |
| 30 | |
| 31 | template <class _Arg, class _Result> |
| 32 | inline _LIBCPP_HIDE_FROM_ABI pointer_to_unary_function<_Arg, _Result> ptr_fun(_Result (*__f)(_Arg)) { |
| 33 | return pointer_to_unary_function<_Arg, _Result>(__f); |
| 34 | } |
| 35 | |
| 36 | _LIBCPP_END_NAMESPACE_STD |
| 37 | |
| 38 | #endif // _LIBCPP___CXX03___FUNCTIONAL_POINTER_TO_UNARY_FUNCTION_H |
| 39 |
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