Mercurial > octave
view liboctave/numeric/aepbalance.cc @ 22323:bac0d6f07a3e
maint: Update copyright notices for 2016.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 17 Aug 2016 01:05:19 -0400 |
parents | 93b3cdd36854 |
children | 7f3c7a8bd131 |
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/* Copyright (C) 1994-2016 John W. Eaton Copyright (C) 2008 Jaroslav Hajek 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 3 of the License, 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, see <http://www.gnu.org/licenses/>. */ #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include <string> #include "CColVector.h" #include "CMatrix.h" #include "aepbalance.h" #include "dColVector.h" #include "dMatrix.h" #include "fCColVector.h" #include "fCMatrix.h" #include "fColVector.h" #include "fMatrix.h" #include "lo-lapack-proto.h" static inline char get_job (bool noperm, bool noscal) { return noperm ? (noscal ? 'N' : 'S') : (noscal ? 'P' : 'B'); } namespace octave { namespace math { template <> aepbalance<Matrix>::aepbalance (const Matrix& a, bool noperm, bool noscal) : balanced_mat (a), scale (), ilo (), ihi (), job (get_job (noperm, noscal)) { octave_idx_type n = a.cols (); if (a.rows () != n) (*current_liboctave_error_handler) ("aepbalance: requires square matrix"); scale = ColumnVector (n); octave_idx_type info; F77_XFCN (dgebal, DGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1), n, balanced_mat.fortran_vec (), n, ilo, ihi, scale.fortran_vec (), info F77_CHAR_ARG_LEN (1))); } template <> Matrix aepbalance<Matrix>::balancing_matrix (void) const { octave_idx_type n = balanced_mat.rows (); Matrix balancing_mat (n, n, 0.0); for (octave_idx_type i = 0; i < n; i++) balancing_mat.elem (i ,i) = 1.0; octave_idx_type info; char side = 'R'; F77_XFCN (dgebak, DGEBAK, (F77_CONST_CHAR_ARG2 (&job, 1), F77_CONST_CHAR_ARG2 (&side, 1), n, ilo, ihi, scale.data (), n, balancing_mat.fortran_vec (), n, info F77_CHAR_ARG_LEN (1) F77_CHAR_ARG_LEN (1))); return balancing_mat; } template <> aepbalance<FloatMatrix>::aepbalance (const FloatMatrix& a, bool noperm, bool noscal) : balanced_mat (a), scale (), ilo (), ihi (), job (get_job (noperm, noscal)) { octave_idx_type n = a.cols (); if (a.rows () != n) (*current_liboctave_error_handler) ("aepbalance: requires square matrix"); scale = FloatColumnVector (n); octave_idx_type info; F77_XFCN (sgebal, SGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1), n, balanced_mat.fortran_vec (), n, ilo, ihi, scale.fortran_vec (), info F77_CHAR_ARG_LEN (1))); } template <> FloatMatrix aepbalance<FloatMatrix>::balancing_matrix (void) const { octave_idx_type n = balanced_mat.rows (); FloatMatrix balancing_mat (n, n, 0.0); for (octave_idx_type i = 0; i < n; i++) balancing_mat.elem (i ,i) = 1.0; octave_idx_type info; char side = 'R'; F77_XFCN (sgebak, SGEBAK, (F77_CONST_CHAR_ARG2 (&job, 1), F77_CONST_CHAR_ARG2 (&side, 1), n, ilo, ihi, scale.data (), n, balancing_mat.fortran_vec (), n, info F77_CHAR_ARG_LEN (1) F77_CHAR_ARG_LEN (1))); return balancing_mat; } template <> aepbalance<ComplexMatrix>::aepbalance (const ComplexMatrix& a, bool noperm, bool noscal) : balanced_mat (a), scale (), ilo (), ihi (), job (get_job (noperm, noscal)) { octave_idx_type n = a.cols (); if (a.rows () != n) (*current_liboctave_error_handler) ("aepbalance: requires square matrix"); scale = ColumnVector (n); octave_idx_type info; F77_XFCN (zgebal, ZGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1), n, F77_DBLE_CMPLX_ARG (balanced_mat.fortran_vec ()), n, ilo, ihi, scale.fortran_vec (), info F77_CHAR_ARG_LEN (1))); } template <> ComplexMatrix aepbalance<ComplexMatrix>::balancing_matrix (void) const { octave_idx_type n = balanced_mat.rows (); ComplexMatrix balancing_mat (n, n, 0.0); for (octave_idx_type i = 0; i < n; i++) balancing_mat.elem (i, i) = 1.0; octave_idx_type info; char side = 'R'; F77_XFCN (zgebak, ZGEBAK, (F77_CONST_CHAR_ARG2 (&job, 1), F77_CONST_CHAR_ARG2 (&side, 1), n, ilo, ihi, scale.data (), n, F77_DBLE_CMPLX_ARG (balancing_mat.fortran_vec ()), n, info F77_CHAR_ARG_LEN (1) F77_CHAR_ARG_LEN (1))); return balancing_mat; } template <> aepbalance<FloatComplexMatrix>::aepbalance (const FloatComplexMatrix& a, bool noperm, bool noscal) : balanced_mat (a), scale (), ilo (), ihi (), job (get_job (noperm, noscal)) { octave_idx_type n = a.cols (); if (a.rows () != n) (*current_liboctave_error_handler) ("aepbalance: requires square matrix"); scale = FloatColumnVector (n); octave_idx_type info; F77_XFCN (cgebal, CGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1), n, F77_CMPLX_ARG (balanced_mat.fortran_vec ()), n, ilo, ihi, scale.fortran_vec (), info F77_CHAR_ARG_LEN (1))); } template <> FloatComplexMatrix aepbalance<FloatComplexMatrix>::balancing_matrix (void) const { octave_idx_type n = balanced_mat.rows (); FloatComplexMatrix balancing_mat (n, n, 0.0); for (octave_idx_type i = 0; i < n; i++) balancing_mat.elem (i, i) = 1.0; octave_idx_type info; char side = 'R'; F77_XFCN (cgebak, CGEBAK, (F77_CONST_CHAR_ARG2 (&job, 1), F77_CONST_CHAR_ARG2 (&side, 1), n, ilo, ihi, scale.data (), n, F77_CMPLX_ARG (balancing_mat.fortran_vec ()), n, info F77_CHAR_ARG_LEN (1) F77_CHAR_ARG_LEN (1))); return balancing_mat; } // Instantiations we need. template class aepbalance<Matrix>; template class aepbalance<FloatMatrix>; template class aepbalance<ComplexMatrix>; template class aepbalance<FloatComplexMatrix>; } }