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// logical_not 13 14#include <functional> 15#include <type_traits> 16#include <cassert> 17 18int main() 19{ 20 typedef std::logical_not<int> F; 21 const F f = F(); 22 static_assert((std::is_base_of<std::unary_function<int, bool>, F>::value), ""); 23 assert(!f(36)); 24 assert(f(0)); 25#if _LIBCPP_STD_VER > 11 26 typedef std::logical_not<> F2; 27 const F2 f2 = F2(); 28 assert(!f2(36)); 29 assert( f2(0)); 30 assert(!f2(36L)); 31 assert( f2(0L)); 32 33 constexpr bool foo = std::logical_not<int> () (36); 34 static_assert ( !foo, "" ); 35 36 constexpr bool bar = std::logical_not<> () (36); 37 static_assert ( !bar, "" ); 38#endif 39} 40