1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // <functional> 10 11 // greater 12 13 #include <functional> 14 #include <type_traits> 15 #include <cassert> 16 17 #include "test_macros.h" 18 #include "pointer_comparison_test_helper.h" 19 20 int main(int, char**) 21 { 22 typedef std::greater<int> F; 23 const F f = F(); 24 static_assert((std::is_same<int, F::first_argument_type>::value), "" ); 25 static_assert((std::is_same<int, F::second_argument_type>::value), "" ); 26 static_assert((std::is_same<bool, F::result_type>::value), "" ); 27 assert(!f(36, 36)); 28 assert(f(36, 6)); 29 assert(!f(6, 36)); 30 { 31 // test total ordering of int* for greater<int*> and 32 // greater<void>. 33 do_pointer_comparison_test<std::greater>(); 34 } 35 #if TEST_STD_VER > 11 36 typedef std::greater<> F2; 37 const F2 f2 = F2(); 38 assert(!f2(36, 36)); 39 assert(f2(36, 6)); 40 assert(!f2(6, 36)); 41 assert( f2(36, 6.0)); 42 assert( f2(36.0, 6)); 43 assert(!f2(6, 36.0)); 44 assert(!f2(6.0, 36)); 45 46 constexpr bool foo = std::greater<int> () (36, 36); 47 static_assert ( !foo, "" ); 48 49 constexpr bool bar = std::greater<> () (36.0, 36); 50 static_assert ( !bar, "" ); 51 #endif 52 53 return 0; 54 } 55