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

This fixes "make fate-eval" on MSVC builds. Without this, the test outputs
"-1.#NaN" instead of "nan" on MSVS 2010.

CC: libav-stable@libav.org

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

These files use NAN/INFINITY but didn't include mathematics.h to get
the fallback definitions if the system lacks the macros.
Signed-off-by: Martin Storsjö <martin@martin.st>

sqrt(-1) returns "some NaN", it's not specified which exactly.

This prevents random values from the stack being used as
"variables" in expressions.
Signed-off-by: Mans Rullgard <mans@mansr.com>

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

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

Signed-off-by: Stefano Sabatini <stefano.sabatini-lala@poste.it>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

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

eval API.

More grep-friendly and more consistent with the rest of the FFmpeg
API.

Originally committed as revision 25708 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25666 to svn://svn.ffmpeg.org/ffmpeg/trunk

prefix does not contain other characters which may belong to an
identifier.

This allows to distinguish for example to have different constants
with the same prefix (e.g. "foo" and "foobar").

Originally committed as revision 25626 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25625 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25624 to svn://svn.ffmpeg.org/ffmpeg/trunk

The pointer to the char ';' has to be increased before to evaluate
";E2".

Originally committed as revision 25623 to svn://svn.ffmpeg.org/ffmpeg/trunk

errors, far from being a complete test system.

Originally committed as revision 23635 to svn://svn.ffmpeg.org/ffmpeg/trunk

the provided expression.

Allow detection of mistyped expressions.

Originally committed as revision 23629 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23627 to svn://svn.ffmpeg.org/ffmpeg/trunk

API public.

Originally committed as revision 23485 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23406 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23405 to svn://svn.ffmpeg.org/ffmpeg/trunk

Make me and Diego happy.

Originally committed as revision 23404 to svn://svn.ffmpeg.org/ffmpeg/trunk

const_name    -> const_names
const_value   -> const_values
func[12]_name -> func[12]_names
func[12]      -> funcs[12]

All these parameters contain a list of values, using plural names for
them help understanding a little.

Originally committed as revision 23403 to svn://svn.ffmpeg.org/ffmpeg/trunk

containing an error code.

Allow these functions to convey the reason of the failure to the
calling function, failure which is not always due to a parsing error
but it may depend for example on a memory problem.

Also fix several potential memleaks.

Originally committed as revision 23402 to svn://svn.ffmpeg.org/ffmpeg/trunk

this is based on stefanos work, especially all bugs are his fault ;)

Originally committed as revision 23201 to svn://svn.ffmpeg.org/ffmpeg/trunk

ff_parse_and_eval_expr(), place the names for constants/functions
before the corresponding values.

This looks more readable, as the user is expected to know the names
before the values.

Originally committed as revision 23149 to svn://svn.ffmpeg.org/ffmpeg/trunk

Passing an explicit filename to this command is only necessary if the
documentation in the @file block refers to a file different from the
one the block resides in.

Originally committed as revision 22921 to svn://svn.ffmpeg.org/ffmpeg/trunk

ff_parse_and_eval_expr().

Change func[12] attributes from "** func" to "* const * func".

This is consistent with the semantics of the provided arrays of
functions, which are not supposed to be changed by the ff_parse_*
functions.

Also fix the GCC compilation warnings:
libavcodec/ratecontrol.c: In function ‘ff_rate_control_init’:
libavcodec/ratecontrol.c:109: warning: passing argument 3 of ‘ff_parse_expr’ discards qualifiers from pointer target type
libavcodec/eval.h:69: note: expected ‘double (**)(void *, double)’ but argument is of type ‘double (* const*)(void *, double)’

Originally committed as revision 22860 to svn://svn.ffmpeg.org/ffmpeg/trunk

ff_parse_and_eval_expr().

Change attribute from "const char **" to "const char * const *".
The name arrays are not supposed to be changed by the function.

Originally committed as revision 22859 to svn://svn.ffmpeg.org/ffmpeg/trunk

The new name is more expressive and fits better in the overall naming
scheme for the revisited eval API.

Originally committed as revision 22858 to svn://svn.ffmpeg.org/ffmpeg/trunk