sparse_disk.h

射线追踪程序

/*
 * This file is part of tomo3d
 *
 * Copyright (C) 2002, 2003, Sebastien Judenherc <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA
 *
 */
#ifndef _sparse_h
#define _sparse_h

struct line_t {
        int index;
        float val;
        struct line_t *next;
};

struct matrix_t {
        int nl,nc;
        int lcache;
        float *cache;
        long offset;
        FILE *f;
};

int writematrix( /* FILE *f, struct matrix_t * tmp */ );

struct matrix_t * readmatrix( /* FILE *f */ );

struct matrix_t * newmatrix( /* int nl, int nc */ );

void sparsefreematrix( /* struct matrix_t * mat */ );

int sparseputval( /* struct matrix_t *mat, int i, int j, float val */ );
/* 0 si i,j existe deja, 1 si i,j est nouveau */

int sparsegetval( /* struct matrix_t *mat, int i, int j, float *val */ );
/* 1 si i,j existe, 0 si i,j n'existe pas */
/* 2 si c'est le premier non nul */

struct matrix_t * sparsematrix( /*float **M, int nl, int nc */ );

float **unsparsematrix( /* struct matrix_t * M */ );

int resparsematrix( /* struct matrix_t * M */ );

#endif