| 1 | /* Test for positive or negative infinity. |
| 2 | Copyright (C) 2007-2013 Free Software Foundation, Inc. |
| 3 | |
| 4 | This program is free software; you can redistribute it and/or modify |
| 5 | it under the terms of the GNU Lesser General Public License as published by |
| 6 | the Free Software Foundation; either version 2, or (at your option) |
| 7 | any later version. |
| 8 | |
| 9 | This program is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | GNU Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public License along |
| 15 | with this program; if not, see <http://www.gnu.org/licenses/>. */ |
| 16 | |
| 17 | /* Written by Ben Pfaff <blp@gnu.org>, 2008. */ |
| 18 | |
| 19 | #include <config.h> |
| 20 | |
| 21 | #include <float.h> |
| 22 | |
| 23 | int |
| 24 | gl_isinff (float x) |
| 25 | { |
| 26 | return x < -FLT_MAX || x > FLT_MAX; |
| 27 | } |
| 28 | |
| 29 | int |
| 30 | gl_isinfd (double x) |
| 31 | { |
| 32 | return x < -DBL_MAX || x > DBL_MAX; |
| 33 | } |
| 34 | |
| 35 | int |
| 36 | gl_isinfl (long double x) |
| 37 | { |
| 38 | return x < -LDBL_MAX || x > LDBL_MAX; |
| 39 | } |