Iselect

Library

Branching

Description

Dialog Box

Set parameters
number of outputs	2
initial connected output	1

• number of outputs: a scalar. Number of regular and event outputs.
• initial connected output: an integer. It must be between 1 and the number of inputs.

Default properties

• always active: no
• direct-feedthrough: yes
• zero-crossing: no
• mode: no
• number/sizes of inputs: 1 / -1
• number/sizes of outputs: 2 / -1 -1
• number/sizes of activation inputs: 2 / 1 1
• number/sizes of activation outputs: 0 /
• continuous-time state: no
• discrete-time state: yes
• name of computational function: selector

Interfacing function

scilab/macros/scicos_blocks/branching/ISELECT_f.sci

Computational function (type 2)

/* Copyright INRIA */
#include "../machine.h"

void 
selector(flag,nevprt,t,xd,x,nx,z,nz,tvec,ntvec,rpar,nrpar,
	       ipar,nipar,inptr,insz,nin,outptr,outsz,nout)
integer *flag,*nevprt,*nx,*nz,*ntvec,*nrpar,ipar[],*nipar,insz[],*nin,outsz[],*nout;
double x[],xd[],z[],tvec[],rpar[];
double *inptr[],*outptr[],*t;

{
    int k;
    double *y;
    double *u;
    int nev,ic;
    
    ic=(int)z[0];
    if ((*flag)<3) {
	ic=-1;
	nev=*nevprt;
	while (nev>=1) {
	    ic=ic+1;
	    nev=nev/2;
	}
    }
    if (*nin>1) {
      y=(double *)outptr[0];
      u=(double *)inptr[ic];
      for (k=0;k<outsz[0];k++)
	*(y++)=*(u++);  
    }
    else {
      y=(double *)outptr[ic];
      u=(double *)inptr[0];
      for (k=0;k<outsz[0];k++)
	*(y++)=*(u++);  
    }
}