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 21 int 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
