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// const_mem_fun_t 13 14#include <functional> 15#include <type_traits> 16#include <cassert> 17 18struct A 19{ 20 char a1() {return 5;} 21 short a2(int i) {return short(i+1);} 22 int a3() const {return 1;} 23 double a4(unsigned i) const {return i-1;} 24}; 25 26int main() 27{ 28 typedef std::const_mem_fun_t<int, A> F; 29 static_assert((std::is_base_of<std::unary_function<const A*, int>, F>::value), ""); 30 const F f(&A::a3); 31 const A a = A(); 32 assert(f(&a) == 1); 33} 34