1 // This file is part of Eigen, a lightweight C++ template library 2 // for linear algebra. 3 // 4 // Copyright (C) 2015 Gael Guennebaud <gael.guennebaud (at) inria.fr> 5 // 6 // This Source Code Form is subject to the terms of the Mozilla 7 // Public License v. 2.0. If a copy of the MPL was not distributed 8 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. 9 10 #include "main.h" 11 12 void check(bool b, bool ref) 13 { 14 std::cout << b; 15 if(b==ref) 16 std::cout << " OK "; 17 else 18 std::cout << " BAD "; 19 } 20 21 #if EIGEN_COMP_MSVC && EIGEN_COMP_MSVC < 1800 22 namespace std { 23 template<typename T> bool (isfinite)(T x) { return _finite(x); } 24 template<typename T> bool (isnan)(T x) { return _isnan(x); } 25 template<typename T> bool (isinf)(T x) { return _fpclass(x)==_FPCLASS_NINF || _fpclass(x)==_FPCLASS_PINF; } 26 } 27 #endif 28 29 template<typename T> 30 void check_inf_nan(bool dryrun) { 31 Matrix<T,Dynamic,1> m(10); 32 m.setRandom(); 33 m(3) = std::numeric_limits<T>::quiet_NaN(); 34 35 if(dryrun) 36 { 37 std::cout << "std::isfinite(" << m(3) << ") = "; check((std::isfinite)(m(3)),false); std::cout << " ; numext::isfinite = "; check((numext::isfinite)(m(3)), false); std::cout << "\n"; 38 std::cout << "std::isinf(" << m(3) << ") = "; check((std::isinf)(m(3)),false); std::cout << " ; numext::isinf = "; check((numext::isinf)(m(3)), false); std::cout << "\n"; 39 std::cout << "std::isnan(" << m(3) << ") = "; check((std::isnan)(m(3)),true); std::cout << " ; numext::isnan = "; check((numext::isnan)(m(3)), true); std::cout << "\n"; 40 std::cout << "allFinite: "; check(m.allFinite(), 0); std::cout << "\n"; 41 std::cout << "hasNaN: "; check(m.hasNaN(), 1); std::cout << "\n"; 42 std::cout << "\n"; 43 } 44 else 45 { 46 VERIFY( !(numext::isfinite)(m(3)) ); 47 VERIFY( !(numext::isinf)(m(3)) ); 48 VERIFY( (numext::isnan)(m(3)) ); 49 VERIFY( !m.allFinite() ); 50 VERIFY( m.hasNaN() ); 51 } 52 T hidden_zero = (std::numeric_limits<T>::min)()*(std::numeric_limits<T>::min)(); 53 m(4) /= hidden_zero; 54 if(dryrun) 55 { 56 std::cout << "std::isfinite(" << m(4) << ") = "; check((std::isfinite)(m(4)),false); std::cout << " ; numext::isfinite = "; check((numext::isfinite)(m(4)), false); std::cout << "\n"; 57 std::cout << "std::isinf(" << m(4) << ") = "; check((std::isinf)(m(4)),true); std::cout << " ; numext::isinf = "; check((numext::isinf)(m(4)), true); std::cout << "\n"; 58 std::cout << "std::isnan(" << m(4) << ") = "; check((std::isnan)(m(4)),false); std::cout << " ; numext::isnan = "; check((numext::isnan)(m(4)), false); std::cout << "\n"; 59 std::cout << "allFinite: "; check(m.allFinite(), 0); std::cout << "\n"; 60 std::cout << "hasNaN: "; check(m.hasNaN(), 1); std::cout << "\n"; 61 std::cout << "\n"; 62 } 63 else 64 { 65 VERIFY( !(numext::isfinite)(m(4)) ); 66 VERIFY( (numext::isinf)(m(4)) ); 67 VERIFY( !(numext::isnan)(m(4)) ); 68 VERIFY( !m.allFinite() ); 69 VERIFY( m.hasNaN() ); 70 } 71 m(3) = 0; 72 if(dryrun) 73 { 74 std::cout << "std::isfinite(" << m(3) << ") = "; check((std::isfinite)(m(3)),true); std::cout << " ; numext::isfinite = "; check((numext::isfinite)(m(3)), true); std::cout << "\n"; 75 std::cout << "std::isinf(" << m(3) << ") = "; check((std::isinf)(m(3)),false); std::cout << " ; numext::isinf = "; check((numext::isinf)(m(3)), false); std::cout << "\n"; 76 std::cout << "std::isnan(" << m(3) << ") = "; check((std::isnan)(m(3)),false); std::cout << " ; numext::isnan = "; check((numext::isnan)(m(3)), false); std::cout << "\n"; 77 std::cout << "allFinite: "; check(m.allFinite(), 0); std::cout << "\n"; 78 std::cout << "hasNaN: "; check(m.hasNaN(), 0); std::cout << "\n"; 79 std::cout << "\n\n"; 80 } 81 else 82 { 83 VERIFY( (numext::isfinite)(m(3)) ); 84 VERIFY( !(numext::isinf)(m(3)) ); 85 VERIFY( !(numext::isnan)(m(3)) ); 86 VERIFY( !m.allFinite() ); 87 VERIFY( !m.hasNaN() ); 88 } 89 } 90 91 void test_fastmath() { 92 std::cout << "*** float *** \n\n"; check_inf_nan<float>(true); 93 std::cout << "*** double ***\n\n"; check_inf_nan<double>(true); 94 std::cout << "*** long double *** \n\n"; check_inf_nan<long double>(true); 95 96 check_inf_nan<float>(false); 97 check_inf_nan<double>(false); 98 check_inf_nan<long double>(false); 99 } 100
