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/*
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) DIGITEO - 2009 - Sylvestre LEDRU
*
* This file is released into the public domain
*
* This example shows how to read / write a matrix from Scilab engine
*
* This example works from Scilab 5.2
* but the previous way of doing is also described as comment
*/
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include "api_scilab.h"
#include "stack-c.h" /* Provide functions to access to the memory of Scilab */
#include "call_scilab.h" /* Provide functions to call Scilab engine */
/*------------------------------------------------------------*/
int main(void)
{
#ifdef _MSC_VER
if ( StartScilab(NULL,NULL,NULL) == FALSE )
#else
if ( StartScilab(getenv("SCI"),NULL,NULL) == FALSE )
#endif
{
fprintf(stderr,"Error while calling StartScilab\n");
return -1;
}
/******************************** WRITE ****************************/
/*
* Write a line matrix into Scilab
* A=[ 1 3 3 2 ];
*/
{
double A[] = {1,3,3,2}; /* Declare the matrix */
int rowA = 1, colA = 4; /* Size of the matrix */
char variableName[] = "A";
SciErr sciErr;
/*
* Write it into Scilab's memory
*/
sciErr = createNamedMatrixOfDouble(pvApiCtx,variableName,rowA,colA, A);
if(sciErr.iErr)
{
printError(&sciErr, 0);
}
/*
* Prior to Scilab 5.2:
* C2F(cwritemat)(variableName, &rowA, &colA, A,strlen(variableName));
*/
printf("Display from Scilab of A:\n");
SendScilabJob("disp(A);"); /* Display A */
}
/*
* Write a matrix into Scilab
* B=[1 4 2 3;
* 3 9 8 2 ]
* Note that it is done column by column
*/
{
double B[] = {1,3,4,9,2,8,3,2}; /* Declare the matrix */
int rowB = 2, colB = 4; /* Size of the matrix */
char variableNameB[] = "B";
SciErr sciErr;
/*
* Write it into Scilab's memory
*/
createNamedMatrixOfDouble(pvApiCtx,variableNameB,rowB,colB, B);
if(sciErr.iErr)
{
printError(&sciErr, 0);
}
/*
* Prior to Scilab 5.2:
* C2F(cwritemat)(variableNameB, &rowB, &colB, B, strlen(variableNameB));
*/
printf("\n");
printf("Display from Scilab of B:\n");
SendScilabJob("disp(B);"); /* Display B */
}
/******************************** READ ****************************/
/* Load the previously set variable A */
{
int rowA_ = 0,colA_ = 0,lp = 0;
int i = 0, j = 0;
double *matrixOfDouble = NULL;
char variableToBeRetrieved[]="A";
SciErr sciErr;
/* First, retrieve the size of the matrix */
sciErr = readNamedMatrixOfDouble(pvApiCtx, variableToBeRetrieved, &rowA_, &colA_, NULL);
if(sciErr.iErr)
{
printError(&sciErr, 0);
}
/*
* Prior to Scilab 5.2:
* C2F(cmatptr)(variableToBeRetrieved, &rowA_, &colA_, &lp, strlen(variableToBeRetrieved));
*/
/* Alloc the memory */
matrixOfDouble=(double*)malloc((rowA_*colA_)*sizeof(double));
/* Load the matrix */
sciErr = readNamedMatrixOfDouble(pvApiCtx, variableToBeRetrieved, &rowA_, &colA_, matrixOfDouble);
if(sciErr.iErr)
{
printError(&sciErr, 0);
}
/*
* Prior to Scilab 5.2:
* C2F(creadmat)(variableToBeRetrieved,&rowA_,&colA_,matrixOfDouble,strlen(variableToBeRetrieved) );
*/
printf("\n");
printf("Display from A (size: %d, %d):\n", rowA_, colA_);
for(i=0; i < rowA_*colA_; i++)
{
fprintf(stdout,"A[%d] = %5.2f\n",i,matrixOfDouble[i]);
}
if (matrixOfDouble)
{
free(matrixOfDouble);
matrixOfDouble=NULL;
}
}
/* Load the previously set variable B */
{
int rowB_ = 0, colB_ = 0, lp_ = 0;
double *matrixOfDoubleB = NULL;
int i = 0, j = 0;
char variableToBeRetrievedB[] = "B";
SciErr sciErr;
/* First, retrieve the size of the matrix */
sciErr = readNamedMatrixOfDouble(pvApiCtx, variableToBeRetrievedB, &rowB_, &colB_, NULL);
if(sciErr.iErr)
{
printError(&sciErr, 0);
}
/*
* Prior to Scilab 5.2:
* C2F(cmatptr)(variableToBeRetrievedB, &rowB_, &colB_, &lp_, strlen(variableToBeRetrievedB));
*/
/* Alloc the memory */
matrixOfDoubleB = (double*)malloc((rowB_*colB_)*sizeof(double));
/* Load the matrix */
sciErr = readNamedMatrixOfDouble(pvApiCtx, variableToBeRetrievedB, &rowB_, &colB_, matrixOfDoubleB);
if(sciErr.iErr)
{
printError(&sciErr, 0);
}
/*
* Prior to Scilab 5.2:
* C2F(creadmat)(variableToBeRetrievedB,&rowB_,&colB_,matrixOfDoubleB,strlen(variableToBeRetrievedB) );
*/
printf("\n");
printf("Display from B raw (size: %d, %d):\n",rowB_, colB_);
for(i=0; i < rowB_*colB_; i++)
{
/* Display the raw matrix */
fprintf(stdout,"B[%d] = %5.2f\n",i,matrixOfDoubleB[i]);
}
printf("\n");
printf("Display from B formated (size: %d, %d):\n",rowB_, colB_);
for(j = 0 ; j < rowB_ ; j++)
{
for(i = 0 ; i < colB_ ; i++)
{
/* Display the formated matrix ... the way the user
* expect */
printf("%5.2f ",matrixOfDoubleB[i * rowB_ + j]);
}
printf("\n"); /* New row of the matrix */
}
if (matrixOfDoubleB)
{
free(matrixOfDoubleB);
matrixOfDoubleB=NULL;
}
}
if ( TerminateScilab(NULL) == FALSE ) {
fprintf(stderr,"Error while calling TerminateScilab\n");
return -2;
}
}
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