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#include "stack-c.h"
/*******************************************
* simple example with sparse matrix
* Display of a
*******************************************/
int F2C(ext14ca)(it,m,n,nel,mnel,icol,ar,ai)
int *n,*m,*it,*nel,*mnel,*icol;
double *ar,*ai;
{
int i,iof = 0, j;
for ( i = 0; i < *m ; i++)
{
sciprint("Row %d, %d non zero elements\r\n",i+1,mnel[i]);
for ( j = 0; j < mnel[i]; j++)
{
if (*it == 1)
sciprint("(%d,%d) -> %f +i%f\r\n",i+1,icol[iof+j],
ar[iof+j],ai[iof+j]);
else
sciprint("(%d,%d) -> %f \r\n",i+1,icol[iof+j],
ar[iof+j]);
}
iof += mnel[i];
}
return(0);
}
/*******************************************
* simple example with sparse matrix
* 2*a copied into b
*******************************************/
int F2C(ext14cb)(it1,m1,n1,nel1,mnel1,icol1,ar1,ai1,
it2,m2,n2,nel2,mnel2,icol2,ar2,ai2)
int *n1,*m1,*it1,*nel1,*mnel1,*icol1;
double *ar1,*ai1;
int *it2,*m2,*n2,*nel2,*mnel2,*icol2;
double *ar2,*ai2;
{
int i,iof = 0, j;
for ( i = 0; i < *m1 ; i++)
{
for ( j = 0; j < mnel1[i]; j++)
{
if (*it1 == 1)
{
ai2[iof+j] = 2*ai1[iof+j];
}
ar2[iof+j] = 2*ar1[iof+j];
}
iof += mnel1[i];
}
for ( i = 0 ; i < *m1 ; i++ )
mnel2[i]= mnel1[i];
for ( i = 0 ; i < *nel1 ; i++)
icol2[i] = icol1[i] ;
return(0);
}
/*******************************************
* same as ext14ca but ar and ai are integers
*******************************************/
int F2C(ext14cc)(it,m,n,nel,mnel,icol,ar,ai)
int *n,*m,*it,*nel,*mnel,*icol;
int *ar,*ai;
{
int i,iof = 0, j;
for ( i = 0; i < *m ; i++)
{
sciprint("Row %d, %d non zero elements\r\n",i+1,mnel[i]);
for ( j = 0; j < mnel[i]; j++)
{
if (*it == 1)
sciprint("(%d,%d) -> %d +i%d\r\n",i+1,icol[iof+j],
ar[iof+j],ai[iof+j]);
else
sciprint("(%d,%d) -> %d \r\n",i+1,icol[iof+j],
ar[iof+j]);
}
iof += mnel[i];
}
return(0);
}
/*******************************************
* same as ext14cb but ar2 and ai2 are integers
*
*******************************************/
int F2C(ext14cd)(it1,m1,n1,nel1,mnel1,icol1,ar1,ai1,
it2,m2,n2,nel2,mnel2,icol2,ar2,ai2)
int *n1,*m1,*it1,*nel1,*mnel1,*icol1;
double *ar1,*ai1;
int *it2,*m2,*n2,*nel2,*mnel2,*icol2;
int *ar2,*ai2;
{
int i,iof = 0, j;
for ( i = 0; i < *m1 ; i++)
{
for ( j = 0; j < mnel1[i]; j++)
{
if (*it1 == 1)
{
ai2[iof+j] = 2*ai1[iof+j];
}
ar2[iof+j] = 2*ar1[iof+j];
}
iof += mnel1[i];
}
for ( i = 0 ; i < *m1 ; i++ )
mnel2[i]= mnel1[i];
for ( i = 0 ; i < *nel1 ; i++)
icol2[i] = icol1[i] ;
return(0);
}
/*******************************************
* Test for intersci with external sparse (spt10 in ex14fi.desc)
*
* sparse.h defines a Sparse structure which can be used
* for storing external Sparse matrices which can be
* copied back to scilab sparse matrices ( by csparsef )
*
* if x is a Sparse object
* x.m : number of rows of x
* x,n : number of columns of x
* x.nel : number of non zero elements in x
* x.it : 0 or 1 i.e. real or complex matrix
* x.mnel[i],i=0,m-1 number of non zero elements in line i+1
*
* x.icol[j],j=0,nel-1 : column of (j+1)th non zero element of the matrix
* ( stored by rows )
* x.xr[j], ..... : real value of the (j+1)th non zero element
* x.xi[j], ..... : if x.it ==1 imaginary value of the (j+1)th
* non zero element
*
* NewSparse can be used to allocate a new Sparse object
*
* The Scilab internal coding is very similar
* and the following function copies a Scilab Sparse (it,m,n,nel,mnel,icol,ar,ai)
* into an allocated Sparse object
* and return the allocated Sparse and its dimensions
*
*
* the routine C2F(csparsef) (file routines/intersci/sparse.c)
* is used for back converstion from Sparse to Scilab sparse and
* and the Sparse object is freed in csparsef
*
*******************************************/
#include "../../routines/intersci/sparse.h"
int F2C(ext14ce)(it,m,n,nel,mnel,icol,ar,ai,x,mx,nx,nelx,itx,err)
int *n,*m,*it,*nel,*mnel,*icol;
double *ar,*ai;
SciSparse **x;
int *mx,*nx,*nelx,*itx;
int *err;
{
int i,iof = 0, j;
*x = NewSparse(it,m,n,nel);
if ( *x == (SciSparse *) 0)
{
sciprint("No more space\r\n");
*err = 1;return;
}
*mx = *m ;
*nx = *n ;
*nelx = *nel;
*itx = *it;
*err=0;
for ( i = 0; i < *m ; i++)
{
for ( j = 0; j < mnel[i]; j++)
{
if (*it == 1)
{
(*x)->I[iof+j] = 2*ai[iof+j];
}
(*x)->R[iof+j] = 2*ar[iof+j];
}
iof += mnel[i];
}
for ( i = 0 ; i < *m ; i++ )
(*x)->mnel[i]= mnel[i];
for ( i = 0 ; i < *nel ; i++)
(*x)->icol[i] = icol[i] ;
return(0);
}
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