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/* ========================================================================== */
/* === UMFPACK_get_lunz ===================================================== */
/* ========================================================================== */
/* -------------------------------------------------------------------------- */
/* UMFPACK Version 4.1 (Apr. 30, 2003), Copyright (c) 2003 by Timothy A. */
/* Davis. All Rights Reserved. See ../README for License. */
/* email: davis@cise.ufl.edu CISE Department, Univ. of Florida. */
/* web: http://www.cise.ufl.edu/research/sparse/umfpack */
/* -------------------------------------------------------------------------- */
/*
User-callable. Determines the number of nonzeros in L and U, and the size
of L and U.
*/
#include "umf_internal.h"
#include "umf_valid_numeric.h"
GLOBAL Int UMFPACK_get_lunz
(
Int *lnz,
Int *unz,
Int *n_row,
Int *n_col,
Int *nz_udiag,
void *NumericHandle
)
{
NumericType *Numeric ;
Numeric = (NumericType *) NumericHandle ;
if (!UMF_valid_numeric (Numeric))
{
return (UMFPACK_ERROR_invalid_Numeric_object) ;
}
if (!lnz || !unz || !n_row || !n_col || !nz_udiag)
{
return (UMFPACK_ERROR_argument_missing) ;
}
*n_row = Numeric->n_row ;
*n_col = Numeric->n_col ;
/* number of nz's in L below diagonal, plus the unit diagonal of L */
*lnz = Numeric->lnz + MIN (Numeric->n_row, Numeric->n_col) ;
/* number of nz's in U above diagonal, plus nz's on diagaonal of U */
*unz = Numeric->unz + Numeric->nnzpiv ;
/* number of nz's on the diagonal */
*nz_udiag = Numeric->nnzpiv ;
return (UMFPACK_OK) ;
}
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