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 // UNSUPPORTED: c++98, c++03 11 12 // <functional> 13 14 // template<CopyConstructible Fn, CopyConstructible... Types> 15 // unspecified bind(Fn, Types...); 16 // template<Returnable R, CopyConstructible Fn, CopyConstructible... Types> 17 // unspecified bind(Fn, Types...); 18 19 // https://bugs.llvm.org/show_bug.cgi?id=16343 20 21 #include <cmath> 22 #include <functional> 23 #include <cassert> 24 25 struct power 26 { 27 template <typename T> 28 T 29 operator()(T a, T b) 30 { 31 return static_cast<T>(std::pow(a, b)); 32 } 33 }; 34 35 struct plus_one 36 { 37 template <typename T> 38 T 39 operator()(T a) 40 { 41 return a + 1; 42 } 43 }; 44 45 int main() 46 { 47 using std::placeholders::_1; 48 49 auto g = std::bind(power(), 2, _1); 50 assert(g(5) == 32); 51 assert(std::bind(plus_one(), g)(5) == 33); 52 } 53
