blob: 65f2a8d342536c799a94194043b1687e524283b0 [file] [log] [blame]
//===----------------------------------------------------------------------===//
//
// 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>
// REQUIRES: c++98 || c++03 || c++11 || c++14
// template <CopyConstructible Arg, Returnable Result>
// pointer_to_unary_function<Arg, Result>
// ptr_fun(Result (*f)(Arg));
#include <functional>
#include <type_traits>
#include <cassert>
double unary_f(int i) {return 0.5 - i;}
int main()
{
assert(std::ptr_fun(unary_f)(36) == -35.5);
}