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/*
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) 2006 - INRIA - Jean-Baptiste Silvy
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
*
*/
/*----------------------------------------------------------------------------------*/
/* File : sciMatrix.c */
/* Desc. : Allocation and deletion and modifications of matrices of pointers */
/* The matrix is stored by colmuns like in Scilab. */
/* These matrices acan be used as generic matrices since they used void * pointers */
/*----------------------------------------------------------------------------------*/
#include <string.h>
#include "sciMatrix.h"
#include "MALLOC.h"
/*----------------------------------------------------------------------------------*/
sciMatrix * emptyMatrix(void)
{
sciMatrix * newMat;
newMat = MALLOC(sizeof(sciMatrix));
if (newMat == NULL)
{
return NULL ;
}
newMat->data = NULL;
newMat->nbCol = 0 ;
newMat->nbRow = 0 ;
return newMat;
}
/*----------------------------------------------------------------------------------*/
sciMatrix * newMatrix(int nbRow, int nbCol)
{
int i = 0;
/* create the matrix */
sciMatrix * newMat = emptyMatrix();
/* allocate the data */
newMat->data = MALLOC((nbRow * nbCol) * sizeof(void *));
newMat->nbRow = nbRow;
newMat->nbCol = nbCol;
/* initialize to NULL */
for (i = 0 ; i < nbRow * nbCol ; i++)
{
newMat->data[i] = NULL;
}
return newMat;
}
/*----------------------------------------------------------------------------------*/
sciMatrix * newCompleteMatrix(void ** dataMat, int nbRow, int nbCol)
{
/* create the matrix */
sciMatrix * newMat = emptyMatrix();
newMat->data = dataMat;
newMat->nbRow = nbRow ;
newMat->nbCol = nbCol ;
return newMat;
}
/*----------------------------------------------------------------------------------*/
void deleteMatrix(sciMatrix * mat)
{
int i = 0;
for (i = 0 ; i < mat->nbRow * mat->nbCol ; i++)
{
FREE(mat->data[i]);
mat->data[i] = NULL;
}
FREE(mat->data);
mat->data = NULL;
mat->nbCol = 0;
mat->nbRow = 0;
FREE(mat);
}
/*----------------------------------------------------------------------------------*/
void desallocateMatrix(sciMatrix * mat)
{
mat->nbCol = 0;
mat->nbRow = 0;
mat->data = NULL;
FREE(mat);
}
/*----------------------------------------------------------------------------------*/
void * getMatElement(const sciMatrix * mat, int row, int col)
{
/* the matrix is stored by column like in scilab */
return mat->data[row + col * mat->nbRow];
}
/*----------------------------------------------------------------------------------*/
void setMatElement(sciMatrix * mat, int row, int col, void * newValue)
{
mat->data[row + col * mat->nbRow] = newValue;
}
/*----------------------------------------------------------------------------------*/
void changeMatElement(sciMatrix * mat, int row, int col, void * newValue)
{
if (mat->data[row + col * mat->nbRow] != NULL)
{
FREE(mat->data[row + col * mat->nbRow]);
}
mat->data[row + col * mat->nbRow] = newValue;
}
/*----------------------------------------------------------------------------------*/
void copyMatElement( sciMatrix * mat ,
int row ,
int col ,
const void * copyValue,
int valueSize)
{
/* copy the value */
void * newValue = MALLOC(valueSize);
memcpy(newValue, copyValue, valueSize);
/* change the current one */
changeMatElement(mat, row, col, newValue);
}
/*----------------------------------------------------------------------------------*/
int getMatNbRow(const sciMatrix * mat)
{
return mat->nbRow ;
}
/*----------------------------------------------------------------------------------*/
int getMatNbCol(const sciMatrix * mat)
{
return mat->nbCol ;
}
/*----------------------------------------------------------------------------------*/
void ** getMatData(const sciMatrix * mat)
{
return mat->data ;
}
/*----------------------------------------------------------------------------------*/
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