Mercurial > octave
view liboctave/numeric/aepbalance.cc @ 33584:3fe954c2fd25 default tip @
maint: merge stable to default
author | Rik <rik@octave.org> |
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date | Mon, 13 May 2024 11:41:11 -0700 |
parents | f53ac65ffba6 |
children |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 1994-2024 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // 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 // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include "CMatrix.h" #include "aepbalance.h" #include "dColVector.h" #include "dMatrix.h" #include "fCMatrix.h" #include "fColVector.h" #include "fMatrix.h" #include "lo-error.h" #include "lo-lapack-proto.h" OCTAVE_BEGIN_NAMESPACE(octave) static inline char get_job (bool noperm, bool noscal) { return noperm ? (noscal ? 'N' : 'S') : (noscal ? 'P' : 'B'); } OCTAVE_BEGIN_NAMESPACE(math) template <> OCTAVE_API aepbalance<Matrix>::aepbalance (const Matrix& a, bool noperm, bool noscal) : m_balanced_mat (a), m_scale (), m_ilo (), m_ihi (), m_job (get_job (noperm, noscal)) { F77_INT n = to_f77_int (a.cols ()); if (a.rows () != n) (*current_liboctave_error_handler) ("aepbalance: requires square matrix"); m_scale = ColumnVector (n); F77_INT info, t_ilo, t_ihi; F77_XFCN (dgebal, DGEBAL, (F77_CONST_CHAR_ARG2 (&m_job, 1), n, m_balanced_mat.rwdata (), n, t_ilo, t_ihi, m_scale.rwdata (), info F77_CHAR_ARG_LEN (1))); m_ilo = t_ilo; m_ihi = t_ihi; } template <> OCTAVE_API Matrix aepbalance<Matrix>::balancing_matrix () const { F77_INT n = to_f77_int (m_balanced_mat.rows ()); Matrix balancing_mat (n, n, 0.0); for (F77_INT i = 0; i < n; i++) balancing_mat.elem (i, i) = 1.0; F77_INT info; F77_INT t_ilo = to_f77_int (m_ilo); F77_INT t_ihi = to_f77_int (m_ihi); char side = 'R'; F77_XFCN (dgebak, DGEBAK, (F77_CONST_CHAR_ARG2 (&m_job, 1), F77_CONST_CHAR_ARG2 (&side, 1), n, t_ilo, t_ihi, m_scale.data (), n, balancing_mat.rwdata (), n, info F77_CHAR_ARG_LEN (1) F77_CHAR_ARG_LEN (1))); return balancing_mat; } template <> OCTAVE_API aepbalance<FloatMatrix>::aepbalance (const FloatMatrix& a, bool noperm, bool noscal) : m_balanced_mat (a), m_scale (), m_ilo (), m_ihi (), m_job (get_job (noperm, noscal)) { F77_INT n = to_f77_int (a.cols ()); if (a.rows () != n) (*current_liboctave_error_handler) ("aepbalance: requires square matrix"); m_scale = FloatColumnVector (n); F77_INT info, t_ilo, t_ihi; F77_XFCN (sgebal, SGEBAL, (F77_CONST_CHAR_ARG2 (&m_job, 1), n, m_balanced_mat.rwdata (), n, t_ilo, t_ihi, m_scale.rwdata (), info F77_CHAR_ARG_LEN (1))); m_ilo = t_ilo; m_ihi = t_ihi; } template <> OCTAVE_API FloatMatrix aepbalance<FloatMatrix>::balancing_matrix () const { F77_INT n = to_f77_int (m_balanced_mat.rows ()); FloatMatrix balancing_mat (n, n, 0.0); for (F77_INT i = 0; i < n; i++) balancing_mat.elem (i, i) = 1.0; F77_INT info; F77_INT t_ilo = to_f77_int (m_ilo); F77_INT t_ihi = to_f77_int (m_ihi); char side = 'R'; F77_XFCN (sgebak, SGEBAK, (F77_CONST_CHAR_ARG2 (&m_job, 1), F77_CONST_CHAR_ARG2 (&side, 1), n, t_ilo, t_ihi, m_scale.data (), n, balancing_mat.rwdata (), n, info F77_CHAR_ARG_LEN (1) F77_CHAR_ARG_LEN (1))); return balancing_mat; } template <> OCTAVE_API aepbalance<ComplexMatrix>::aepbalance (const ComplexMatrix& a, bool noperm, bool noscal) : m_balanced_mat (a), m_scale (), m_ilo (), m_ihi (), m_job (get_job (noperm, noscal)) { F77_INT n = to_f77_int (a.cols ()); if (a.rows () != n) (*current_liboctave_error_handler) ("aepbalance: requires square matrix"); m_scale = ColumnVector (n); F77_INT info, t_ilo, t_ihi; F77_XFCN (zgebal, ZGEBAL, (F77_CONST_CHAR_ARG2 (&m_job, 1), n, F77_DBLE_CMPLX_ARG (m_balanced_mat.rwdata ()), n, t_ilo, t_ihi, m_scale.rwdata (), info F77_CHAR_ARG_LEN (1))); m_ilo = t_ilo; m_ihi = t_ihi; } template <> OCTAVE_API ComplexMatrix aepbalance<ComplexMatrix>::balancing_matrix () const { F77_INT n = to_f77_int (m_balanced_mat.rows ()); ComplexMatrix balancing_mat (n, n, 0.0); for (F77_INT i = 0; i < n; i++) balancing_mat.elem (i, i) = 1.0; F77_INT info; F77_INT t_ilo = to_f77_int (m_ilo); F77_INT t_ihi = to_f77_int (m_ihi); char side = 'R'; F77_XFCN (zgebak, ZGEBAK, (F77_CONST_CHAR_ARG2 (&m_job, 1), F77_CONST_CHAR_ARG2 (&side, 1), n, t_ilo, t_ihi, m_scale.data (), n, F77_DBLE_CMPLX_ARG (balancing_mat.rwdata ()), n, info F77_CHAR_ARG_LEN (1) F77_CHAR_ARG_LEN (1))); return balancing_mat; } template <> OCTAVE_API aepbalance<FloatComplexMatrix>::aepbalance (const FloatComplexMatrix& a, bool noperm, bool noscal) : m_balanced_mat (a), m_scale (), m_ilo (), m_ihi (), m_job (get_job (noperm, noscal)) { F77_INT n = to_f77_int (a.cols ()); if (a.rows () != n) (*current_liboctave_error_handler) ("aepbalance: requires square matrix"); m_scale = FloatColumnVector (n); F77_INT info, t_ilo, t_ihi; F77_XFCN (cgebal, CGEBAL, (F77_CONST_CHAR_ARG2 (&m_job, 1), n, F77_CMPLX_ARG (m_balanced_mat.rwdata ()), n, t_ilo, t_ihi, m_scale.rwdata (), info F77_CHAR_ARG_LEN (1))); m_ilo = t_ilo; m_ihi = t_ihi; } template <> OCTAVE_API FloatComplexMatrix aepbalance<FloatComplexMatrix>::balancing_matrix () const { F77_INT n = to_f77_int (m_balanced_mat.rows ()); FloatComplexMatrix balancing_mat (n, n, 0.0); for (F77_INT i = 0; i < n; i++) balancing_mat.elem (i, i) = 1.0; F77_INT info; F77_INT t_ilo = to_f77_int (m_ilo); F77_INT t_ihi = to_f77_int (m_ihi); char side = 'R'; F77_XFCN (cgebak, CGEBAK, (F77_CONST_CHAR_ARG2 (&m_job, 1), F77_CONST_CHAR_ARG2 (&side, 1), n, t_ilo, t_ihi, m_scale.data (), n, F77_CMPLX_ARG (balancing_mat.rwdata ()), 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>; OCTAVE_END_NAMESPACE(math) OCTAVE_END_NAMESPACE(octave)