| /* Macros for infinity. |
| Copyright (C) 2011-2020 Free Software Foundation, Inc. |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| |
| |
| /* Infinityf () returns a 'float' +Infinity. */ |
| |
| /* The Microsoft MSVC 9 compiler chokes on the expression 1.0f / 0.0f. |
| The IBM XL C compiler on z/OS complains. |
| PGI 16.10 complains. */ |
| #if defined _MSC_VER || (defined __MVS__ && defined __IBMC__) || defined __PGI |
| static float |
| Infinityf () |
| { |
| static float zero = 0.0f; |
| return 1.0f / zero; |
| } |
| #else |
| # define Infinityf() (1.0f / 0.0f) |
| #endif |
| |
| |
| /* Infinityd () returns a 'double' +Infinity. */ |
| |
| /* The Microsoft MSVC 9 compiler chokes on the expression 1.0 / 0.0. |
| The IBM XL C compiler on z/OS complains. |
| PGI 16.10 complains. */ |
| #if defined _MSC_VER || (defined __MVS__ && defined __IBMC__) || defined __PGI |
| static double |
| Infinityd () |
| { |
| static double zero = 0.0; |
| return 1.0 / zero; |
| } |
| #else |
| # define Infinityd() (1.0 / 0.0) |
| #endif |
| |
| |
| /* Infinityl () returns a 'long double' +Infinity. */ |
| |
| /* The Microsoft MSVC 9 compiler chokes on the expression 1.0L / 0.0L. |
| The IBM XL C compiler on z/OS complains. |
| PGI 16.10 complains. */ |
| #if defined _MSC_VER || (defined __MVS__ && defined __IBMC__) || defined __PGI |
| static long double |
| Infinityl () |
| { |
| static long double zero = 0.0L; |
| return 1.0L / zero; |
| } |
| #else |
| # define Infinityl() (1.0L / 0.0L) |
| #endif |