ffmpeg | branch: master | Stefano Sabatini <stefa...@gmail.com> | Mon Jan 1 20:38:03 2024 +0100| [8ceb37d5ad730b93e4a277b74a5279c5d1f7864a] | committer: Stefano Sabatini
doc/utils/eval: clarify meaning of random* seed value Possible address trac issue: http://trac.ffmpeg.org/ticket/10763 > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8ceb37d5ad730b93e4a277b74a5279c5d1f7864a --- doc/utils.texi | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/doc/utils.texi b/doc/utils.texi index 76e704fc3c..2f18a61bfd 100644 --- a/doc/utils.texi +++ b/doc/utils.texi @@ -944,11 +944,23 @@ Return a pseudo random value between 0.0 and 1.0. @var{idx} is the index of the internal variable which will be used to save the seed/state. +To initialize the seed, you need to store the seed value as a 64-bit +unsigned integer in the internal variable with index @var{idx}. + +For example, to store the seed with value @code{42} in the internal +variable with index @code{0} and print a few random values: +@example +st(0,42); print(random(0)); print(random(0)); print(random(0)) +@end example + @item randomi(idx, min, max) Return a pseudo random value in the interval between @var{min} and @var{max}. @var{idx} is the index of the internal variable which will be used to save the seed/state. +To initialize the seed, you need to store the seed value as a 64-bit +unsigned integer in the internal variable with index @var{idx}. + @item root(expr, max) Find an input value for which the function represented by @var{expr} with argument @var{ld(0)} is 0 in the interval 0..@var{max}. _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".