Computational routine
eng

##
extractz

### File content

    #include "scicos_block4.h"
    #include "../machine.h"

    void extractz(scicos_block *block,int flag)
    {
      double *ur;
      double *ui;
      double *yr;
      double *yi;
      int *r;
      int nu,mu,nr,i,j,ij,k,nc,nl;

      mu=GetInPortRows(block,1);
      nu=GetInPortCols(block,1);
      nr=GetNipar(block);
      r=GetIparPtrs(block);
      ur=GetRealInPortPtrs(block,1);
      ui=GetImagInPortPtrs(block,1);
      yr=GetRealOutPortPtrs(block,1);
      yi=GetImagOutPortPtrs(block,1);
      nc=r[nr-1];
      nl=r[nr-2];
      k=0;
      for (j=0;j<nc;j++)
    	{for (i=0;i<nl;i++)
    		{ij=r[i]-1+(r[nl+j]-1)*mu;
    		 *(yr+k)=*(ur+ij);
    		 *(yi+k)=*(ui+ij);
    		 k++;}}
    }