hvirtual/quicktime/ffmpeg/libavcodec/eval.c File Reference

#include "avcodec.h"
#include "mpegvideo.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

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Data Structures
struct	Parser
Defines
#define	NAN   0
Functions
static double	evalExpression (Parser *p)
static int	strmatch (const char *s, const char *prefix)
static double	evalPrimary (Parser *p)
static double	evalPow (Parser *p)
static double	evalFactor (Parser *p)
static double	evalTerm (Parser *p)
double	ff_eval (char *s, double *const_value, const char **const_name, double(**func1)(void *, double), const char **func1_name, double(**func2)(void *, double, double), char **func2_name, void *opaque)

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Detailed Description

simple arithmetic expression evaluator.

see http://joe.hotchkiss.com/programming/eval/eval.html

Definition in file eval.c.

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Define Documentation

#define NAN   0

Definition at line 38 of file eval.c.

Referenced by evalExpression(), and evalPrimary().

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Function Documentation

static double evalExpression

(

Parser *

p

)

[static]

Definition at line 169 of file eval.c.

References evalTerm(), NAN, Parser::s, and Parser::stack_index.

Referenced by evalPrimary(), and ff_eval().

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static double evalFactor

(

Parser *

p

)

[static]

Definition at line 151 of file eval.c.

References evalPow(), and Parser::s.

Referenced by evalTerm().

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static double evalPow

(

Parser *

p

)

[static]

Definition at line 145 of file eval.c.

References evalPrimary(), and Parser::s.

Referenced by evalFactor().

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static double evalPrimary

(

Parser *

p

)

[static]

Definition at line 67 of file eval.c.

References av_log(), AV_LOG_ERROR, Parser::const_name, Parser::const_value, evalExpression(), Parser::func1, Parser::func1_name, Parser::func2, Parser::func2_name, M_PI, NAN, NULL, Parser::opaque, Parser::s, strchr, and strmatch().

Referenced by evalPow().

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static double evalTerm

(

Parser *

p

)

[static]

Definition at line 160 of file eval.c.

References evalFactor(), and Parser::s.

Referenced by evalExpression().

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double ff_eval	(	char *	s,
		double *	const_value,
		const char **	const_name,
		double(**)(void *, double)	func1,
		const char **	func1_name,
		double(**)(void *, double, double)	func2,
		char **	func2_name,
		void *	opaque
	)

Definition at line 185 of file eval.c.

References Parser::const_name, Parser::const_value, evalExpression(), Parser::func1, Parser::func1_name, Parser::func2, Parser::func2_name, Parser::opaque, Parser::s, and Parser::stack_index.

Referenced by get_qscale().

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static int strmatch	(	const char *	s,
		const char *	prefix
	)			[static]

Definition at line 59 of file eval.c.

Referenced by evalPrimary().