Computational routine
eng

matz_vpv

File content

# include "scicos_block4.h"
# include "../machine.h"
#include <stdio.h>

#ifndef NULL
#define NULL    0
#endif

extern int C2F(zgeev)();
extern int C2F(zheev)();
extern int C2F(dlaset)();
typedef struct
{         double *LA;
          double *LX;
          double *LVR;
          double *dwork;
	  double *rwork;
          double *dwork1;
          double *rwork1;
} mat_vpv_struct ;
void matz_vpv(scicos_block *block,int flag)
{
  void **_work=GetPtrWorkPtrs(block);
 double *ur,*ui;
 double *y1r,*y1i,*y2r,*y2i;
 int nu;
 int info;
 int i,lwork,lwork1,j,ii,ij,ji,rw;
 int hermitien;
 double l0;
 mat_vpv_struct *ptr;
 
 nu =GetInPortRows(block,1);
 ur=GetRealInPortPtrs(block,1);
 ui=GetImagInPortPtrs(block,1);
 y1r=GetRealOutPortPtrs(block,1);
 y1i=GetImagOutPortPtrs(block,1);
 y2r=GetRealOutPortPtrs(block,2);
 y2i=GetImagOutPortPtrs(block,2);
 lwork1=2*nu;
 lwork=2*nu-1;
 rw=3*nu-2;
             /*init : initialization*/
if (flag==4)
   {if((*(_work)=(mat_vpv_struct*) scicos_malloc(sizeof(mat_vpv_struct)))==NULL)
	{set_block_error(-16);
	 return;}
    ptr=*(_work);
    if((ptr->LA=(double*) scicos_malloc(sizeof(double)*(2*nu*nu)))==NULL)
	{set_block_error(-16);
	 scicos_free(ptr);
	 return;}
    if((ptr->LX=(double*) scicos_malloc(sizeof(double)*(2*nu)))==NULL)
	{set_block_error(-16);
	 scicos_free(ptr->LA);
	 scicos_free(ptr);
	 return;}
    if((ptr->LVR=(double*) scicos_malloc(sizeof(double)*(2*nu*nu)))==NULL)
	{set_block_error(-16);
	 scicos_free(ptr->LX);
	 scicos_free(ptr->LA);
	 scicos_free(ptr);
	 return;}
    if((ptr->dwork=(double*) scicos_malloc(sizeof(double)*2*lwork))==NULL)
	{set_block_error(-16);
	 scicos_free(ptr->LVR);
	 scicos_free(ptr->LX);
	 scicos_free(ptr->LA);
	 scicos_free(ptr);
	 return;}
    if((ptr->rwork=(double*) scicos_malloc(sizeof(double)*2*rw))==NULL)
	{set_block_error(-16);
	 scicos_free(ptr->dwork);
	 scicos_free(ptr->LVR);
	 scicos_free(ptr->LX);
	 scicos_free(ptr->LA);
	 scicos_free(ptr);
	 return;}
    if((ptr->dwork1=(double*) scicos_malloc(sizeof(double)*2*lwork1))==NULL)
	{set_block_error(-16);
	 scicos_free(ptr->rwork);
	 scicos_free(ptr->dwork);
	 scicos_free(ptr->LVR);
	 scicos_free(ptr->LX);
	 scicos_free(ptr->LA);
	 scicos_free(ptr);
	 return;}
    if((ptr->rwork1=(double*) scicos_malloc(sizeof(double)*2*lwork1))==NULL)
	{set_block_error(-16);
	 scicos_free(ptr->dwork1);
	 scicos_free(ptr->rwork);
	 scicos_free(ptr->dwork);
	 scicos_free(ptr->LVR);
	 scicos_free(ptr->LX);
	 scicos_free(ptr->LA);
	 scicos_free(ptr);
	 return;}
   }

       /* Terminaison */
else if (flag==5)
   {ptr=*(_work);
    if((ptr->rwork1)!=NULL){
    	scicos_free(ptr->LA);
    	scicos_free(ptr->LX);
    	scicos_free(ptr->LVR);
    	scicos_free(ptr->rwork);
    	scicos_free(ptr->rwork1);
    	scicos_free(ptr->dwork);
    	scicos_free(ptr->dwork1);
    	scicos_free(ptr);
    	return;}
   }

else
   {
    ptr=*(_work);
    for (i=0;i<(nu*nu);i++)
	{ptr->LA[2*i]=ur[i];
	 ptr->LA[2*i+1]=ui[i];}
   hermitien=1;
    for (j=0;j<nu;j++)
	{for (i=j;i<nu;i++)
		{ij=i+j*nu;
		 ji=j+i*nu;
		if (i!=j)
			{if ((*(ptr->LA+2*ij)==*(ptr->LA+2*ji))&&(*(ptr->LA+2*ij+1)==-(*(ptr->LA+2*ji+1)))) hermitien*= 1;
			 else { hermitien*=0;break;}}}}
    if (hermitien==1)
	{C2F(zheev)("V","U",&nu,ptr->LA,&nu,ptr->LX,ptr->dwork,&lwork,ptr->rwork,&info);
	 if (info!=0)
	    	{if (flag!=6)
		{set_block_error(-7);
		return;
		}}
	for (i=0;i<nu;i++)
	{ii=i+i*nu;
	 *(y1r+ii)=*(ptr->LX+i);}
	for(i=0;i<nu*nu;i++)
	 {*(y2r+i)=*(ptr->LA+2*i);
	 *(y2i+i)=*(ptr->LA+2*i+1);}
	}
	
   else
	{C2F(zgeev)("N","V",&nu,ptr->LA,&nu,ptr->LX,ptr->dwork1,&nu,ptr->LVR,&nu,ptr->dwork1,&lwork1,ptr->rwork1,&info);
        if (info!=0)
	    	{if (flag!=6)
		{set_block_error(-7);
		return;
		}}
	l0=0;
	C2F(dlaset)("F",&nu,&nu,&l0,&l0,y1r,&nu);
	C2F(dlaset)("F",&nu,&nu,&l0,&l0,y1i,&nu);
	C2F(dlaset)("F",&nu,&nu,&l0,&l0,y2r,&nu);
	C2F(dlaset)("F",&nu,&nu,&l0,&l0,y2i,&nu);
	for (i=0;i<nu;i++)
		{ii=i+i*nu;
		 *(y1r+ii)=*(ptr->LX+2*i);
		 *(y1i+ii)=*(ptr->LX+2*i+1);}
	for(i=0;i<nu*nu;i++)
		 {*(y2r+i)=*(ptr->LVR+2*i);
	 	 *(y2i+i)=*(ptr->LVR+2*i+1);}
	}
   }
}