Mercurial > octave
view liboctave/numeric/aepbalance.cc @ 29359:7854d5752dd2
maint: merge stable to default.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Wed, 10 Feb 2021 10:10:40 -0500 |
parents | 5c14f81e0937 0a5b15007766 |
children | 443571d367fe |
line wrap: on
line source
//////////////////////////////////////////////////////////////////////// // // Copyright (C) 1994-2021 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" namespace octave { static inline char get_job (bool noperm, bool noscal) { return noperm ? (noscal ? 'N' : 'S') : (noscal ? 'P' : 'B'); } namespace math { template <> OCTAVE_API aepbalance<Matrix>::aepbalance (const Matrix& a, bool noperm, bool noscal) : balanced_mat (a), scale (), ilo (), ihi (), 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"); scale = ColumnVector (n); F77_INT info, t_ilo, t_ihi; F77_XFCN (dgebal, DGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1), n, balanced_mat.fortran_vec (), n, t_ilo, t_ihi, scale.fortran_vec (), info F77_CHAR_ARG_LEN (1))); ilo = t_ilo; ihi = t_ihi; } template <> OCTAVE_API Matrix aepbalance<Matrix>::balancing_matrix (void) const { F77_INT n = to_f77_int (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 (ilo); F77_INT t_ihi = to_f77_int (ihi); char side = 'R'; F77_XFCN (dgebak, DGEBAK, (F77_CONST_CHAR_ARG2 (&job, 1), F77_CONST_CHAR_ARG2 (&side, 1), n, t_ilo, t_ihi, scale.data (), n, balancing_mat.fortran_vec (), 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) : balanced_mat (a), scale (), ilo (), ihi (), 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"); scale = FloatColumnVector (n); F77_INT info, t_ilo, t_ihi; F77_XFCN (sgebal, SGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1), n, balanced_mat.fortran_vec (), n, t_ilo, t_ihi, scale.fortran_vec (), info F77_CHAR_ARG_LEN (1))); ilo = t_ilo; ihi = t_ihi; } template <> OCTAVE_API FloatMatrix aepbalance<FloatMatrix>::balancing_matrix (void) const { F77_INT n = to_f77_int (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 (ilo); F77_INT t_ihi = to_f77_int (ihi); char side = 'R'; F77_XFCN (sgebak, SGEBAK, (F77_CONST_CHAR_ARG2 (&job, 1), F77_CONST_CHAR_ARG2 (&side, 1), n, t_ilo, t_ihi, scale.data (), n, balancing_mat.fortran_vec (), 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) : balanced_mat (a), scale (), ilo (), ihi (), 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"); scale = ColumnVector (n); F77_INT info, t_ilo, t_ihi; F77_XFCN (zgebal, ZGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1), n, F77_DBLE_CMPLX_ARG (balanced_mat.fortran_vec ()), n, t_ilo, t_ihi, scale.fortran_vec (), info F77_CHAR_ARG_LEN (1))); ilo = t_ilo; ihi = t_ihi; } template <> OCTAVE_API ComplexMatrix aepbalance<ComplexMatrix>::balancing_matrix (void) const { F77_INT n = to_f77_int (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 (ilo); F77_INT t_ihi = to_f77_int (ihi); char side = 'R'; F77_XFCN (zgebak, ZGEBAK, (F77_CONST_CHAR_ARG2 (&job, 1), F77_CONST_CHAR_ARG2 (&side, 1), n, t_ilo, t_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 <> OCTAVE_API aepbalance<FloatComplexMatrix>::aepbalance (const FloatComplexMatrix& a, bool noperm, bool noscal) : balanced_mat (a), scale (), ilo (), ihi (), 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"); scale = FloatColumnVector (n); F77_INT info, t_ilo, t_ihi; F77_XFCN (cgebal, CGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1), n, F77_CMPLX_ARG (balanced_mat.fortran_vec ()), n, t_ilo, t_ihi, scale.fortran_vec (), info F77_CHAR_ARG_LEN (1))); ilo = t_ilo; ihi = t_ihi; } template <> OCTAVE_API FloatComplexMatrix aepbalance<FloatComplexMatrix>::balancing_matrix (void) const { F77_INT n = to_f77_int (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 (ilo); F77_INT t_ihi = to_f77_int (ihi); char side = 'R'; F77_XFCN (cgebak, CGEBAK, (F77_CONST_CHAR_ARG2 (&job, 1), F77_CONST_CHAR_ARG2 (&side, 1), n, t_ilo, t_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>; } }