arith.c File Reference

#include <stdlib.h>
#include <stdio.h>
#include "arith.h"

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Functions
int	l2 (unsigned long x)
arith_t	arith_init (struct buff *b)
int	ajuster (arith_t state, int coder)
int	coder (int i, distrib_t d, arith_t state)
int	coder_uniforme (unsigned long i, unsigned long n, arith_t state)
int	chercher (unsigned long valeur, unsigned long *sprob, int a, int b)
int	decoder (distrib_t d, int *lettre, arith_t state)
unsigned long	decoder_uniforme (unsigned long n, unsigned long *lettre, arith_t state)

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Function Documentation

int ajuster	(	arith_t	state,
		int	coder
	)

Definition at line 82 of file arith.c.

References code_arith::buffer, bwrite(), bwrite_bit(), bwrite_bits(), code_arith::compteur, l2(), code_arith::max, code_arith::min, and PREC_INTER.

Referenced by coder(), coder_uniforme(), decoder(), and decoder_uniforme().

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arith_t arith_init

(

struct buff *

b

)

Definition at line 69 of file arith.c.

References code_arith::buffer, code_arith::compteur, code_arith::max, code_arith::min, and PREC_INTER.

Referenced by dicho_b2cw(), and dicho_cw2b().

int chercher	(	unsigned long	valeur,
		unsigned long *	sprob,
		int	a,
		int	b
	)

Definition at line 209 of file arith.c.

Referenced by decoder().

int coder	(	int	i,
		distrib_t	d,
		arith_t	state
	)

Definition at line 137 of file arith.c.

References ajuster(), code_arith::buffer, bwrite_lock(), code_arith::compteur, distrib_get_proba, distrib_t::max, code_arith::max, code_arith::min, PREC_INTER, and PREC_PROBA.

Referenced by dicho_rec().

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int coder_uniforme	(	unsigned long	i,
		unsigned long	n,
		arith_t	state
	)

Definition at line 176 of file arith.c.

References ajuster(), code_arith::buffer, bwrite_lock(), code_arith::compteur, code_arith::max, code_arith::min, and PREC_INTER.

Referenced by dicho().

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int decoder	(	distrib_t	d,
		int *	lettre,
		arith_t	state
	)

Definition at line 223 of file arith.c.

References ajuster(), blook(), bread_lock(), bstep(), code_arith::buffer, chercher(), code_arith::compteur, distrib_get_proba, distrib_t::max, code_arith::max, distrib_t::min, code_arith::min, PREC_INTER, PREC_PROBA, and distrib_t::prob.

Referenced by dichoinv_rec().

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unsigned long decoder_uniforme	(	unsigned long	n,
		unsigned long *	lettre,
		arith_t	state
	)

Definition at line 289 of file arith.c.

References ajuster(), blook(), bread_lock(), bstep(), code_arith::buffer, code_arith::compteur, code_arith::max, code_arith::min, and PREC_INTER.

Referenced by dichoinv().

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int l2

(

unsigned long

x

)

Definition at line 25 of file arith.c.

Referenced by adjust_delta(), ajuster(), and leaf_info().