//===----------------------------------------------------------------------===// // // The LLVM Compiler Infrastructure // // This file is dual licensed under the MIT and the University of Illinois Open // Source Licenses. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // <functional> // const_mem_fun_t #include <functional> #include <type_traits> #include <cassert> struct A { char a1() {return 5;} short a2(int i) {return short(i+1);} int a3() const {return 1;} double a4(unsigned i) const {return i-1;} }; int main() { typedef std::const_mem_fun_t<int, A> F; static_assert((std::is_base_of<std::unary_function<const A*, int>, F>::value), ""); const F f(&A::a3); const A a = A(); assert(f(&a) == 1); }