1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
/* ========================================================================== */
/* === UMFPACK_get_lunz ===================================================== */
/* ========================================================================== */
/* -------------------------------------------------------------------------- */
/* UMFPACK Version 4.6, Copyright (c) 2005 by Timothy A. Davis. CISE Dept, */
/* Univ. of Florida. All Rights Reserved. See ../Doc/License for License. */
/* 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) ;
}
|
