| /* Test for finite value (zero, subnormal, or normal, and not infinite or NaN). |
| Copyright (C) 2007-2020 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 2, 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/>. */ |
| |
| /* Written by Ben Pfaff <blp@gnu.org>, 2007. */ |
| |
| #include <config.h> |
| |
| #include "isnanf-nolibm.h" |
| #include "isnand-nolibm.h" |
| #include "isnanl-nolibm.h" |
| |
| /* The "cc" compiler on HP-UX 11.11, when optimizing, simplifies the test |
| x - y == 0.0 to x == y, a simplification which is invalid when x and y |
| are Infinity. Disable this optimization. */ |
| #if defined __hpux && !defined __GNUC__ |
| static float zerof; |
| static double zerod; |
| static long double zerol; |
| #else |
| # define zerof 0.f |
| # define zerod 0. |
| # define zerol 0.L |
| #endif |
| |
| int gl_isfinitef (float x) |
| { |
| return !isnanf (x) && x - x == zerof; |
| } |
| |
| int gl_isfinited (double x) |
| { |
| return !isnand (x) && x - x == zerod; |
| } |
| |
| int gl_isfinitel (long double x) |
| { |
| return !isnanl (x) && x - x == zerol; |
| } |