src/bitmap.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "bitmap.h"

Functions
void	assert (int testresult, char *message)
unsigned char *	bitmapGetContents (bitmap bm)
unsigned int	bitmapGetMaxSize (bitmap bm)
unsigned int	bitmapGetLength (bitmap bm)
bitmap	bitmapInit (unsigned int max_size)
unsigned char	bitmapGetBit (bitmap bm, unsigned int index)
void	bitmapSetBit (bitmap *bm, unsigned int index, unsigned char bit)
void	bitmapAppendLeastSignificantBit (bitmap *bm, unsigned char bit)

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Detailed Description

Define um TAD representando um mapa de bits.

Author:

Joao Paulo Andrade Almeida (jpalmeida@inf.ufes.br)

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Function Documentation

void assert	(	int	testresult,
		char *	message
	)

Funcao auxiliar que imprime uma mensagem de falha e aborta o programa caso testresult seja falso.

Parameters:

	testresult	Valor booleano representando o resultado do teste que deveria ser verdadeiro.
	message	A mensagem para ser impressa se resultado do teste for falso.

void bitmapAppendLeastSignificantBit	(	bitmap *	bm,
		unsigned char	bit
	)

Adiciona um bit no final do mapa de bits.

Parameters:

	bm	O mapa de bits.
	bit	O novo valor do bit.

Precondition:

bitmapGetLength(bm) < bitmapGetMaxSize(bm)

Postcondition:

(bitmapGetBit(bm,bitmapGetLength(bm) @ pre)==bit) and (bitmapGetLength(bm) == bitmapGetLength(bm) @ pre+1)

unsigned char bitmapGetBit	(	bitmap	bm,
		unsigned int	index
	)

Retorna o valor do bit na posicao index.

Parameters:

	bm	O mapa de bits.
	index	A posicao do bit.

Precondition:

index<bitmapGetLength(bm)

Returns:

O valor do bit.

unsigned char* bitmapGetContents

(

bitmap

bm

)

Retorna o conteudo do mapa de bits.

Parameters:

bm

O mapa de bits.

unsigned int bitmapGetLength

(

bitmap

bm

)

Retorna o tamanho atual do mapa de bits.

Parameters:

bm

O mapa de bits.

Returns:

O tamanho atual do mapa de bits.

unsigned int bitmapGetMaxSize

(

bitmap

bm

)

Retorna o tamanho maximo do mapa de bits.

Parameters:

bm

O mapa de bits.

Returns:

O tamanho maximo do mapa de bits.

bitmap bitmapInit

(

unsigned int

max_size

)

Constroi um novo mapa de bits, definindo um tamanho maximo.

Parameters:

max_size

O tamanho maximo para o mapa de bits.

Returns:

O mapa de bits inicializado.

void bitmapSetBit	(	bitmap *	bm,
		unsigned int	index,
		unsigned char	bit
	)

Modifica o valor do bit na posicao index.

Parameters:

	bm	O mapa de bits.
	index	A posicao do bit.
	bit	O novo valor do bit.

Postcondition:

bitmapGetBit(bm,index)==bit

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