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/*
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) ????-2008 - INRIA
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
*
*/
#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\n", i + 1, mnel[i]);
for ( j = 0; j < mnel[i]; j++)
{
if (*it == 1)
sciprint("(%d,%d) -> %f +i%f\n", i + 1, icol[iof + j],
ar[iof + j], ai[iof + j]);
else
sciprint("(%d,%d) -> %f\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\n", i + 1, mnel[i]);
for ( j = 0; j < mnel[i]; j++)
{
if (*it == 1)
sciprint("(%d,%d) -> %d +i%d\n", i + 1, icol[iof + j],
ar[iof + j], ai[iof + j]);
else
sciprint("(%d,%d) -> %d\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)
*
* a Sparse structure is defined in stack-c.h 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/libinter.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\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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