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_fun1_ref_t 13 14 #include <functional> 15 #include <type_traits> 16 #include <cassert> 17 18 struct A 19 { a1A20 char a1() {return 5;} a2A21 short a2(int i) {return short(i+1);} a3A22 int a3() const {return 1;} a4A23 double a4(unsigned i) const {return i-1;} 24 }; 25 main()26int main() 27 { 28 typedef std::const_mem_fun1_ref_t<double, A, unsigned> F; 29 static_assert((std::is_base_of<std::binary_function<A, unsigned, double>, F>::value), ""); 30 const F f(&A::a4); 31 const A a = A(); 32 assert(f(a, 6) == 5); 33 } 34