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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/*
Copyright (C) 1996 John W. Eaton
This file is part of Octave.
Octave is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
Octave is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with Octave; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#if defined (__GNUG__)
#pragma implementation
#endif
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string>
#include "dbleAEPBAL.h"
#include "f77-fcn.h"
extern "C"
{
int F77_FCN (dgebal, DGEBAL) (const char*, const int&, double*,
const int&, int&, int&, double*,
int&, long, long);
int F77_FCN (dgebak, DGEBAK) (const char*, const char*, const int&,
const int&, const int&, double*,
const int&, double*, const int&,
int&, long, long);
}
int
AEPBALANCE::init (const Matrix& a, const string& balance_job)
{
int n = a.cols ();
if (a.rows () != n)
{
(*current_liboctave_error_handler) ("AEPBALANCE requires square matrix");
return -1;
}
int info;
int ilo;
int ihi;
Array<double> scale (n);
double *pscale = scale.fortran_vec ();
balanced_mat = a;
double *p_balanced_mat = balanced_mat.fortran_vec ();
char job = balance_job[0];
F77_XFCN (dgebal, DGEBAL, (&job, n, p_balanced_mat, n, ilo, ihi,
pscale, info, 1L, 1L));
if (f77_exception_encountered)
(*current_liboctave_error_handler) ("unrecoverable error in dgebal");
else
{
balancing_mat = Matrix (n, n, 0.0);
for (int i = 0; i < n; i++)
balancing_mat.elem (i ,i) = 1.0;
double *p_balancing_mat = balancing_mat.fortran_vec ();
char side = 'R';
F77_XFCN (dgebak, DGEBAK, (&job, &side, n, ilo, ihi, pscale, n,
p_balancing_mat, n, info, 1L, 1L));
if (f77_exception_encountered)
(*current_liboctave_error_handler) ("unrecoverable error in dgebak");
}
return info;
}
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/
|
