mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
e854b8f9f4
The values of {FLT,DBL}_{MAX,MIN} macros on some systems (older musl
libc, some BSD flavours) are not exactly representable, i.e.
(double)DBL_MAX == DBL_MAX is false
This violates (at least some interpretations of) the C99 standard and
breaks code (e.g. in vf_fps) like
double f = DBL_MAX;
[...]
if (f == DBL_MAX) { // f has not been changed yet
[....]
}
36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
/*
|
|
* Work around broken floating point limits on some systems.
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* Libav 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include_next <float.h>
|
|
|
|
#ifdef FLT_MAX
|
|
#undef FLT_MAX
|
|
#define FLT_MAX 3.40282346638528859812e+38F
|
|
|
|
#undef FLT_MIN
|
|
#define FLT_MIN 1.17549435082228750797e-38F
|
|
|
|
#undef DBL_MAX
|
|
#define DBL_MAX ((double)1.79769313486231570815e+308L)
|
|
|
|
#undef DBL_MIN
|
|
#define DBL_MIN ((double)2.22507385850720138309e-308L)
|
|
#endif
|