1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 2011 Chun-wei Fan <fanc999@yahoo.com.tw>
4 * Author: Chun-wei Fan <fanc999@yahoo.com.tw>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
22 #ifndef HAVE_DECL_ISNAN
23 /* it seems of the supported compilers only
24 * MSVC does not have isnan(), but it does
25 * have _isnan() which does the same as isnan()
27 static inline gboolean
34 #ifndef HAVE_DECL_ISINF
35 /* Unfortunately MSVC does not have finite()
36 * but it does have _finite() which is the same
37 * as finite() except when x is a NaN
39 static inline gboolean
42 return (!_finite (x) && !_isnan (x));