Mercurial > hg > octave-terminal
changeset 3182:936b9ae8f7d2
[project @ 1998-09-25 02:57:00 by jwe]
author | jwe |
---|---|
date | Fri, 25 Sep 1998 02:57:00 +0000 |
parents | 3f6a813eb09e |
children | 5edc539c2f80 |
files | liboctave/dbleGEPBAL.cc liboctave/dbleGEPBAL.h |
diffstat | 2 files changed, 0 insertions(+), 323 deletions(-) [+] |
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deleted file mode 100644 --- a/liboctave/dbleGEPBAL.cc +++ /dev/null @@ -1,229 +0,0 @@ -/* - -Copyright (C) 1996, 1997 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 <cmath> - -#include <string> - -#include "dbleGEPBAL.h" -#include "f77-fcn.h" - -extern "C" -{ - 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 F77_FCN (reduce, REDUCE) (const int&, const int&, double*, - const int&, double*, int&, int&, - double*, double*); - - int F77_FCN (scaleg, SCALEG) (const int&, const int&, double*, - const int&, double*, const int&, - const int&, double*, double*, - double*); - - int F77_FCN (gradeq, GRADEQ) (const int&, const int&, double*, - const int&, double*, int&, int&, - double*, double*); -} - -int -GEPBALANCE::init (const Matrix& a, const Matrix& b, const string& balance_job) -{ - int a_nr = a.rows (); - int a_nc = a.cols (); - int b_nr = b.rows (); - - if (a_nr != a_nc || a_nr != b_nr || b_nr != b.cols ()) - { - (*current_liboctave_error_handler) - ("GEPBALANCE requires square matrices of the same size"); - return -1; - } - - int n = a_nc; - - int info; - int ilo; - int ihi; - - Array<double> cscale (n); - double *pcscale = cscale.fortran_vec (); - - Matrix wk (n, 6, 0.0); - double *pwk = wk.fortran_vec (); - - // Back out the permutations: - // - // cscale contains the exponents of the column scaling factors in its - // ilo through ihi locations and the reducing column permutations in - // its first ilo-1 and its ihi+1 through n locations. - // - // cperm contains the column permutations applied in grading the a and b - // submatrices in its ilo through ihi locations. - // - // wk contains the exponents of the row scaling factors in its ilo - // through ihi locations, the reducing row permutations in its first - // ilo-1 and its ihi+1 through n locations, and the row permutations - // applied in grading the a and b submatrices in its n+ilo through - // n+ihi locations. - - // Copy matrices into local structure. - - balanced_a_mat = a; - balanced_b_mat = b; - - double *p_balanced_a_mat = balanced_a_mat.fortran_vec (); - double *p_balanced_b_mat = balanced_b_mat.fortran_vec (); - - // Check for permutation option. - - char job = balance_job[0]; - - if (job == 'P' || job == 'B') - { - F77_XFCN (reduce, REDUCE, (n, n, p_balanced_a_mat, n, - p_balanced_b_mat, ilo, ihi, - pcscale, pwk)); - } - else - { - // Set up for scaling later. - - ilo = 1; - ihi = n; - } - - if (f77_exception_encountered) - (*current_liboctave_error_handler) ("unrecoverable error in reduce"); - else - { - Array<double> cperm (n); - double *pcperm = cperm.fortran_vec (); - - // Check for scaling option. - - if ((job == 'S' || job == 'B') && ilo != ihi) - { - F77_XFCN (scaleg, SCALEG, (n, n, p_balanced_a_mat, n, - p_balanced_b_mat, ilo, ihi, - pcscale, pcperm, pwk)); - } - else - { - // Set scaling data to 0's. - - for (int i = ilo-1; i < ihi; i++) - { - cscale.elem (i) = 0.0; - wk.elem (i, 0) = 0.0; - } - } - - if (f77_exception_encountered) - (*current_liboctave_error_handler) ("unrecoverable error in scaleg"); - else - { - // Scaleg returns exponents, not values, so... - - for (int i = ilo-1; i < ihi; i++) - { - cscale.elem (i) = pow (2.0, cscale.elem (i)); - wk.elem (i, 0) = pow (2.0, -wk.elem (i, 0)); - } - - // Initialize balancing matrices to identity. - - left_balancing_mat = Matrix (n, n, 0.0); - for (int i = 0; i < n; i++) - left_balancing_mat (i, i) = 1.0; - - right_balancing_mat = left_balancing_mat; - - double *p_right_balancing_mat = right_balancing_mat.fortran_vec (); - double *p_left_balancing_mat = left_balancing_mat.fortran_vec (); - - // Column permutations/scaling. - - char side = 'R'; - - F77_XFCN (dgebak, DGEBAK, (&job, &side, n, ilo, ihi, pcscale, - n, p_right_balancing_mat, n, info, - 1L, 1L)); - - if (f77_exception_encountered) - (*current_liboctave_error_handler) - ("unrecoverable error in dgebak"); - else - { - // Row permutations/scaling. - - side = 'L'; - - F77_XFCN (dgebak, DGEBAK, (&job, &side, n, ilo, ihi, pwk, - n, p_left_balancing_mat, n, - info, 1L, 1L)); - -#if 0 - // XXX FIXME XXX --- these four lines need to be added and - // debugged. GEPBALANCE::init will work without them, though, so - // here they are. - - if ((job == 'P' || job == 'B') && ilo != ihi) - { - F77_XFCN (gradeq, GRADEQ, (n, n, p_balanced_a_mat, n, - p_balanced_b_mat, ilo, ihi, - pcperm, pwk)); - } -#endif - - if (f77_exception_encountered) - (*current_liboctave_error_handler) - ("unrecoverable error in dgebak"); - else - { - // Transpose for aa = cc*a*dd convention... - - left_balancing_mat = left_balancing_mat.transpose (); - } - } - } - } - - return info; -} - -/* -;;; Local Variables: *** -;;; mode: C++ *** -;;; End: *** -*/
deleted file mode 100644 --- a/liboctave/dbleGEPBAL.h +++ /dev/null @@ -1,94 +0,0 @@ -/* - -Copyright (C) 1996, 1997 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 (octave_GEPBALANCE_h) -#define octave_GEPBALANCE_h 1 - -#if defined (__GNUG__) -#pragma interface -#endif - -class ostream; - -#include <string> - -#include "dMatrix.h" - -class -GEPBALANCE -{ -public: - - GEPBALANCE (void) - : balanced_a_mat (), balanced_b_mat (), left_balancing_mat (), - right_balancing_mat () { } - - GEPBALANCE (const Matrix& a, const Matrix& b, const string& balance_job) - { - init (a, b, balance_job); - } - - GEPBALANCE (const GEPBALANCE& a) - : balanced_a_mat (a.balanced_a_mat), - balanced_b_mat (a.balanced_b_mat), - left_balancing_mat (a.left_balancing_mat), - right_balancing_mat (a.right_balancing_mat) { } - - GEPBALANCE& operator = (const GEPBALANCE& a) - { - if (this != &a) - { - balanced_a_mat = a.balanced_a_mat; - balanced_b_mat = a.balanced_b_mat; - left_balancing_mat = a.left_balancing_mat; - right_balancing_mat = a.right_balancing_mat; - } - return *this; - } - - ~GEPBALANCE (void) { } - - Matrix balanced_a_matrix (void) const { return balanced_a_mat; } - Matrix balanced_b_matrix (void) const { return balanced_b_mat; } - - Matrix left_balancing_matrix (void) const { return left_balancing_mat; } - Matrix right_balancing_matrix (void) const { return right_balancing_mat; } - - friend ostream& operator << (ostream& os, const GEPBALANCE& a); - -private: - - Matrix balanced_a_mat; - Matrix balanced_b_mat; - Matrix left_balancing_mat; - Matrix right_balancing_mat; - - int init (const Matrix& a, const Matrix& b, const string& balance_job); -}; - -#endif - -/* -;;; Local Variables: *** -;;; mode: C++ *** -;;; End: *** -*/