Multiplication

Library

Non_linear

Description

The output is the element wize product of the inputs.

Default properties

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

Interfacing function

scilab/macros/scicos_blocks/nonlinear/PROD_f.sci

Computational function (type 2)

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

/* Element wise product */

void 
prod(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[];
     integer *nin,outsz[],*nout;
     double x[],xd[],z[],tvec[],rpar[];
     double *inptr[],*outptr[],*t;

{
    int k,i,n;
    double *y;
    double *u;
    
    n=outsz[0]; /* insz[0]==insz[1] .. ==insz[*nin]== outsz[0] */

    y=(double *)outptr[0];

    for (i=0;i<n;i++) {
      y[i]=1.0;
      for (k=0;k<*nin;k++) {
	u=(double *)inptr[k];
	y[i]=y[i]*u[i];
      }
    }
}