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17 Commits

Author SHA1 Message Date
Michael Niedermayer
59affed23c eval: add root() to solve f(x)=0 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-02-27 00:00:55 +01:00
Michael Niedermayer
923092697a eval: Allow specifying the variable id. 
Reviewed-by: Nicolas George <nicolas.george@normalesup.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-02-26 22:12:17 +01:00
Michael Niedermayer
43b1943a55 eval: Add taylor series evaluation support. 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-02-22 23:09:47 +01:00
Stefano Sabatini
e4e291061c doc/eval.texi: add precisation about the assumption for "trueness" in conditional expressions 2012-01-17 12:03:30 +01:00
Stefano Sabatini
999495734b lavu/eval: add if() and ifnot() eval functions 
They allow to implement the if/then/else logic, which cannot be
implemented otherwise.

For example the expression:
A*B + not(A)*C

always evaluates to NaN if B is NaN, even in the case where A is 0.
 2012-01-17 12:03:30 +01:00
Michael Niedermayer
cdba9b617f eval.texi: document that variables are not shared between expressions. 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2011-12-10 23:36:30 +01:00
root
551b9eb9ef docs: Spelling fixes to 9 texi files from /doc 
credits to: Violet Lin (from Google Code-in)

Signed-off-by: burek <burek021@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2011-11-29 18:26:06 +01:00
Nicolas George
40963ea9e9 eval: add mathematical constants (PI, E, PHI). 
Signed-off-by: Nicolas George <nicolas.george@normalesup.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2011-10-13 16:50:20 +02:00
Clément Bœsch
d557152285 eval: document recently added random(), hypot(), gcd(). 2011-10-11 07:31:40 +02:00
Stefano Sabatini
d58ed64a89 eval: add support for pow() function 
It is a more search-friendly alternative to the ^ operator.
 2011-06-07 00:37:00 +02:00
Stefano Sabatini
3c2c52baec eval: implement not() expression 2011-05-25 12:42:19 +02:00
Stefano Sabatini
e5272e729e eval: add sqrt function for computing the square root 2011-05-05 18:38:35 +02:00
Stefano Sabatini
25601bc564 eval: add support for trunc, ceil, and floor functions 
Signed-off-by: Stefano Sabatini <stefano.sabatini-lala@poste.it>
 2011-04-05 15:34:16 +02:00
Michael Niedermayer
a6be21d3ba Revert "replace FFmpeg with Libav in doc/" 
This reverts commit f8a45fa1b1.

Conflicts:

	doc/optimization.txt
 2011-03-17 17:26:45 +01:00
Janne Grunau
f8a45fa1b1 replace FFmpeg with Libav in doc/ 
unless it stands for ffmpeg the program or is historic
 2011-03-16 22:01:01 +01:00
Stefano Sabatini
20fcd0797e Implement isnan() function evaluation. 
Originally committed as revision 25666 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-11-03 19:44:00 +00:00
Stefano Sabatini
07851d7936 Add eval.texi file. 
Originally committed as revision 25665 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-11-03 19:43:55 +00:00