Doxygen gets confused by this.

av_gcd is now always defined regardless of input. This documents this
change in the "documented API". Two benefits (closely related):
1. The function is robust, and there is no need to worry about INT64_MIN, etc.

2. Clients of av_gcd, like av_reduce, can now be made fully correct. Currently,
av_reduce can trigger undefined behavior if e.g num is INT64_MIN due to
integer overflow in the FFABS. Furthermore, this undefined behavior is
completely undocumented, and could be a fuzzer's paradise. The FFABS was needed in the past as
av_gcd was undefined for negative inputs. In order to make av_reduce
robust, it is essential to guarantee that av_gcd works for all int64_t.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>

Signed-off-by: Lou Logan <lou@lrcd.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Clément Bœsch <ubitux@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Some compilers, MSVC among them, don't recognize the divisions by
zero as meaning infinity/nan.

These macros should, according to the standard, expand to constant
expressions, but this shouldn't matter for our usage.

Signed-off-by: Martin Storsjö <martin@martin.st>

This reverts commit a2b186a1.

The defines were present for several years, removing
them without a version bump may break API.
(Fixes MPlayer compilation.)

While these defines are not defined by the C standard they are
standardized as X/Open System Interfaces Extension. We use the
appropiate _XOPEN_SOURCE define to make them available. They
seem to be available on all FATE configs since the constants
are used in files where mathematics.h is not included.

Introduce a basic layout, the subpages are currently left empty.

Split libavutil in multiple groups as example of the structure

Signed-off-by: Mans Rullgard <mans@mansr.com>

irrational number.

Originally committed as revision 24439 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23904 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23593 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23551 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22825 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22729 to svn://svn.ffmpeg.org/ffmpeg/trunk

This reduces the number of false dependencies on header files and
speeds up compilation.

Originally committed as revision 22407 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 21946 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 21924 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 21671 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 20939 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 20935 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19611 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 16844 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 16840 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 16653 to svn://svn.ffmpeg.org/ffmpeg/trunk

Consistently apply this rule: the guard name is obtained from the
filename by stripping the leading "lib", converting '/' and '.'  to
'_' and uppercasing the resulting name. Guard names in the root
directory have to be prefixed by "FFMPEG_".

Originally committed as revision 15120 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 14727 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 14725 to svn://svn.ffmpeg.org/ffmpeg/trunk

                in libavutil.
Fix a compilation failure in r12489.

Originally committed as revision 12498 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12490 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Zuxy Meng: zuxy meng gmail com
Original thread:
[FFmpeg-devel] [PATCH] Pure, const and malloc attributes to libavutil
Date: 03/18/2008 6:09 AM

Originally committed as revision 12489 to svn://svn.ffmpeg.org/ffmpeg/trunk