equal
deleted
inserted
replaced
1 /* -*- mode: C++; indent-tabs-mode: nil; -*- |
1 /* -*- mode: C++; indent-tabs-mode: nil; -*- |
2 * |
2 * |
3 * This file is a part of LEMON, a generic C++ optimization library. |
3 * This file is a part of LEMON, a generic C++ optimization library. |
4 * |
4 * |
5 * Copyright (C) 2003-2009 |
5 * Copyright (C) 2003-2010 |
6 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
6 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
7 * (Egervary Research Group on Combinatorial Optimization, EGRES). |
7 * (Egervary Research Group on Combinatorial Optimization, EGRES). |
8 * |
8 * |
9 * Permission to use, modify and distribute this software is granted |
9 * Permission to use, modify and distribute this software is granted |
10 * provided that this copyright notice appears in all copies. For |
10 * provided that this copyright notice appears in all copies. For |
54 const long double SQRT2 = 1.4142135623730950488016887242096981L; |
54 const long double SQRT2 = 1.4142135623730950488016887242096981L; |
55 /// 1/sqrt(2) |
55 /// 1/sqrt(2) |
56 const long double SQRT1_2 = 0.7071067811865475244008443621048490L; |
56 const long double SQRT1_2 = 0.7071067811865475244008443621048490L; |
57 |
57 |
58 ///Check whether the parameter is NaN or not |
58 ///Check whether the parameter is NaN or not |
59 |
59 |
60 ///This function checks whether the parameter is NaN or not. |
60 ///This function checks whether the parameter is NaN or not. |
61 ///Is should be equivalent with std::isnan(), but it is not |
61 ///Is should be equivalent with std::isnan(), but it is not |
62 ///provided by all compilers. |
62 ///provided by all compilers. |
63 inline bool isNaN(double v) |
63 inline bool isNaN(double v) |
64 { |
64 { |