Scilab Website | Contribute with GitLab | Mailing list archives | ATOMS toolboxes
Scilab Online Help
5.5.2 - English

Change language to:
Français - 日本語 - Português - Русский

Please note that the recommended version of Scilab is 2025.0.0. This page might be outdated.
However, this page did not exist in the previous stable version.

Scilab Help >> call_scilab API (Scilab engine) > Boolean management

Boolean management

How to manage Scilab's boolean read and write process using call_scilab and api_scilab

Description

This help describes how boolean and matrix of booleans can be handle through the Call Scilab API and api Scilab.

There are several functions which can be used to read / write from the memory of Scilab. These functions are described in dedicated pages.

Note: Access to variables is done through api Scilab (named variable).

Examples

/* 
 * Write a matrix of boolean into Scilab
 * B=[F F T F; 
 *    F F F T ]
 * Note that it is done column by column
 */ 
int B[]={0,0,0,0,1,0,0,1};   /* Declare the matrix */
int rowB=2, colB=4; /* Size of the matrix */
char variableNameB[] = "B";
SciErr sciErr;

/* Write it into Scilab's memory */
sciErr = createNamedMatrixOfBoolean(pvApiCtx, variableNameB, rowB, colB, B);
if(sciErr.iErr)
{
    printError(&sciErr, 0);
}

/*
 * Prior to Scilab 5.2:
 * C2F(cwritebmat)(variableNameB, &rowB, &colB, B, strlen(variableNameB)); 
 */

printf("Display from Scilab of B:\n");
SendScilabJob("disp(B);"); /* Display B */
/* Read the previously declared matrix of boolean B */
int rowB_ = 0, colB_ = 0, lp_ = 0;
int i = 0, j = 0;
int *matrixOfBooleanB = NULL; /* Int instead of double */

char variableToBeRetrievedB[] = "B";
SciErr sciErr;
/* First, retrieve the size of the matrix */
sciErr = readNamedMatrixOfBoolean(pvApiCtx, variableToBeRetrievedB, &rowB_, &colB_, NULL);
if(sciErr.iErr)
{
    printError(&sciErr, 0);
}

/*
 * Prior to Scilab 5.2:
 * C2F(cmatbptr)(variableToBeRetrievedB, &rowB_, &colB_, &lp_, strlen(variableToBeRetrievedB));
 */

/* Alloc the memory */
matrixOfBooleanB=(int*)malloc((rowB_*colB_)*sizeof(int));

/* Load the matrix */
sciErr = readNamedMatrixOfBoolean(pvApiCtx, variableToBeRetrievedB, &rowB_, &colB_, matrixOfBooleanB);
if(sciErr.iErr)
{
    printError(&sciErr, 0);
}

/*
 * Prior to Scilab 5.2:
 * C2F(creadbmat)(variableToBeRetrievedB,&rowB_,&colB_,matrixOfBooleanB,strlen(variableToBeRetrievedB) );
 */

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 expects */
  printf("%d ",matrixOfBooleanB[i * rowB_ + j]);
 }
 printf("\n"); /* New row of the matrix */
}

See Also

Report an issue
<< call_scilab API (Scilab engine) call_scilab API (Scilab engine) Complex management >>

Copyright (c) 2022-2024 (Dassault Systèmes)
Copyright (c) 2017-2022 (ESI Group)
Copyright (c) 2011-2017 (Scilab Enterprises)
Copyright (c) 1989-2012 (INRIA)
Copyright (c) 1989-2007 (ENPC)
with contributors
Last updated:
Wed Apr 01 10:14:08 CEST 2015