1 // { dg-options "-std=gnu++0x" } 2 // { dg-add-options ieee } 3 4 // 2010-02-25 Ed Smith-Rowland 5 6 // Copyright (C) 2010-2013 Free Software Foundation, Inc. 7 // 8 // This file is part of the GNU ISO C++ Library. This library is free 9 // software; you can redistribute it and/or modify it under the 10 // terms of the GNU General Public License as published by the 11 // Free Software Foundation; either version 3, or (at your option) 12 // any later version. 13 14 // This library is distributed in the hope that it will be useful, 15 // but WITHOUT ANY WARRANTY; without even the implied warranty of 16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 // GNU General Public License for more details. 18 19 // You should have received a copy of the GNU General Public License along 20 // with this library; see the file COPYING3. If not see 21 // <http://www.gnu.org/licenses/>. 22 23 // 18.2.1.1 template class numeric_limits 24 25 #include <limits> 26 #include <type_traits> 27 #include <testsuite_hooks.h> 28 29 template<typename T> 30 void do_test(std::true_type)31 do_test(std::true_type) 32 { 33 bool test __attribute__((unused)) = true; 34 T limits_min = std::numeric_limits<T>::min(); 35 VERIFY( std::numeric_limits<T>::lowest() == limits_min ); 36 } 37 38 template<typename T> 39 void do_test(std::false_type)40 do_test(std::false_type) 41 { 42 bool test __attribute__((unused)) = true; 43 T limits_max = std::numeric_limits<T>::max(); 44 VERIFY( std::numeric_limits<T>::lowest() == -limits_max ); 45 } 46 47 template<typename Tp> 48 void do_test()49 do_test() 50 { do_test<Tp>(typename std::is_integral<Tp>::type()); } 51 test01()52void test01() 53 { 54 do_test<char>(); 55 do_test<signed char>(); 56 do_test<unsigned char>(); 57 #ifdef _GLIBCXX_USE_WCHAR_T 58 do_test<wchar_t>(); 59 #endif 60 do_test<char16_t>(); 61 do_test<char32_t>(); 62 63 do_test<short>(); 64 do_test<unsigned short>(); 65 66 do_test<int>(); 67 do_test<unsigned int>(); 68 69 do_test<long>(); 70 do_test<unsigned long>(); 71 72 do_test<long long>(); 73 do_test<unsigned long long>(); 74 75 // GNU Extensions. 76 #ifdef _GLIBCXX_USE_INT128 77 do_test<__int128>(); 78 do_test<unsigned __int128>(); 79 #endif 80 81 do_test<float>(); 82 do_test<double>(); 83 do_test<long double>(); 84 } 85 main()86int main() 87 { 88 test01(); 89 return 0; 90 } 91