1 // { dg-add-options ieee } 2 3 // 1999-08-23 bkoz 4 5 // Copyright (C) 1999-2014 Free Software Foundation, Inc. 6 // 7 // This file is part of the GNU ISO C++ Library. This library is free 8 // software; you can redistribute it and/or modify it under the 9 // terms of the GNU General Public License as published by the 10 // Free Software Foundation; either version 3, or (at your option) 11 // any later version. 12 13 // This library is distributed in the hope that it will be useful, 14 // but WITHOUT ANY WARRANTY; without even the implied warranty of 15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 // GNU General Public License for more details. 17 18 // You should have received a copy of the GNU General Public License along 19 // with this library; see the file COPYING3. If not see 20 // <http://www.gnu.org/licenses/>. 21 22 // 18.2.1.1 template class numeric_limits 23 24 #include <limits> 25 #include <limits.h> 26 #include <float.h> 27 #include <cwchar> 28 #include <testsuite_hooks.h> 29 30 template<typename T> 31 void test_is_iec559()32test_is_iec559() 33 { 34 bool test; 35 36 if (std::numeric_limits<T>::is_iec559) 37 { 38 // IEC 559 requires all of the following. 39 test = (std::numeric_limits<T>::has_infinity 40 && std::numeric_limits<T>::has_quiet_NaN 41 && std::numeric_limits<T>::has_signaling_NaN); 42 } 43 else 44 { 45 // If we had all of the following, why didn't we set IEC 559? 46 test = (!std::numeric_limits<T>::has_infinity 47 || !std::numeric_limits<T>::has_quiet_NaN 48 || !std::numeric_limits<T>::has_signaling_NaN); 49 } 50 51 VERIFY (test); 52 } 53 54 // libstdc++/8949 test04()55bool test04() 56 { 57 bool test __attribute__((unused)) = true; 58 59 VERIFY( !std::numeric_limits<short>::is_iec559 ); 60 VERIFY( !std::numeric_limits<unsigned short>::is_iec559 ); 61 VERIFY( !std::numeric_limits<int>::is_iec559 ); 62 VERIFY( !std::numeric_limits<unsigned int>::is_iec559 ); 63 VERIFY( !std::numeric_limits<long>::is_iec559 ); 64 VERIFY( !std::numeric_limits<unsigned long>::is_iec559 ); 65 VERIFY( !std::numeric_limits<long long>::is_iec559 ); 66 VERIFY( !std::numeric_limits<unsigned long long>::is_iec559 ); 67 return test; 68 } 69 main()70int main() 71 { 72 test_is_iec559<float>(); 73 test_is_iec559<double>(); 74 test_is_iec559<long double>(); 75 76 test04(); 77 78 return 0; 79 } 80