15a83710eSEric Fiselier //===----------------------------------------------------------------------===// 25a83710eSEric Fiselier // 3*57b08b09SChandler Carruth // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*57b08b09SChandler Carruth // See https://llvm.org/LICENSE.txt for license information. 5*57b08b09SChandler Carruth // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 65a83710eSEric Fiselier // 75a83710eSEric Fiselier //===----------------------------------------------------------------------===// 85a83710eSEric Fiselier 95a83710eSEric Fiselier // <functional> 10bc933768SStephan T. Lavavej // REQUIRES: c++98 || c++03 || c++11 || c++14 11bc933768SStephan T. Lavavej // unary_function was removed in C++17 125a83710eSEric Fiselier 135a83710eSEric Fiselier // unary_function 145a83710eSEric Fiselier 155a83710eSEric Fiselier #include <functional> 165a83710eSEric Fiselier #include <type_traits> 175a83710eSEric Fiselier 185a83710eSEric Fiselier int main() 195a83710eSEric Fiselier { 205a83710eSEric Fiselier typedef std::unary_function<int, bool> uf; 215a83710eSEric Fiselier static_assert((std::is_same<uf::argument_type, int>::value), ""); 225a83710eSEric Fiselier static_assert((std::is_same<uf::result_type, bool>::value), ""); 235a83710eSEric Fiselier } 24