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 // negate 13 14 #include <functional> 15 #include <type_traits> 16 #include <cassert> 17 18 #include "test_macros.h" 19 20 int main() 21 { 22 typedef std::negate<int> F; 23 const F f = F(); 24 static_assert((std::is_same<F::argument_type, int>::value), "" ); 25 static_assert((std::is_same<F::result_type, int>::value), "" ); 26 assert(f(36) == -36); 27 #if TEST_STD_VER > 11 28 typedef std::negate<> F2; 29 const F2 f2 = F2(); 30 assert(f2(36) == -36); 31 assert(f2(36L) == -36); 32 assert(f2(36.0) == -36); 33 34 constexpr int foo = std::negate<int> () (3); 35 static_assert ( foo == -3, "" ); 36 37 constexpr double bar = std::negate<> () (3.0); 38 static_assert ( bar == -3.0, "" ); 39 #endif 40 } 41
