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// greater 13 14#include <functional> 15#include <type_traits> 16#include <cassert> 17 18#include "test_macros.h" 19#include "pointer_comparison_test_helper.hpp" 20 21int main() 22{ 23 typedef std::greater<int> F; 24 const F f = F(); 25 static_assert((std::is_same<int, F::first_argument_type>::value), "" ); 26 static_assert((std::is_same<int, F::second_argument_type>::value), "" ); 27 static_assert((std::is_same<bool, F::result_type>::value), "" ); 28 assert(!f(36, 36)); 29 assert(f(36, 6)); 30 assert(!f(6, 36)); 31 { 32 // test total ordering of int* for greater<int*> and 33 // greater<void>. 34 do_pointer_comparison_test<int, std::greater>(); 35 } 36#if TEST_STD_VER > 11 37 typedef std::greater<> F2; 38 const F2 f2 = F2(); 39 assert(!f2(36, 36)); 40 assert(f2(36, 6)); 41 assert(!f2(6, 36)); 42 assert( f2(36, 6.0)); 43 assert( f2(36.0, 6)); 44 assert(!f2(6, 36.0)); 45 assert(!f2(6.0, 36)); 46 47 constexpr bool foo = std::greater<int> () (36, 36); 48 static_assert ( !foo, "" ); 49 50 constexpr bool bar = std::greater<> () (36.0, 36); 51 static_assert ( !bar, "" ); 52#endif 53} 54