Mercurial > octave
view liboctave/numeric/aepbalance.h @ 31249:de6fc38c78c6
Make Jacobian types offered by dlsode.f accessible by lsode (bug #31626).
* liboctave/numeric/LSODE-opts.in: Add options "jacobian type", "lower jacobian
subdiagonals", and "upper jacobian subdiagonals".
* liboctave/numeric/LSODE.cc (file scope, lsode_j,
LSODE::do_integrate (double)): Handle new configurable Jacobian types.
* build-aux/mk-opts.pl: Don't implicitly convert to integer in condition.
author | Olaf Till <olaf.till@uni-jena.de> |
---|---|
date | Fri, 12 Nov 2010 08:53:05 +0100 |
parents | 796f54d4ddbf |
children | e88a07dec498 |
line wrap: on
line source
//////////////////////////////////////////////////////////////////////// // // Copyright (C) 1994-2022 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 (octave_aepbalance_h) #define octave_aepbalance_h 1 #include "octave-config.h" #include <algorithm> namespace octave { namespace math { template <typename MT> class aepbalance { public: typedef typename MT::real_column_vector_type VT; aepbalance (void) : m_balanced_mat (), m_scale (), m_ilo (), m_ihi (), m_job () { } OCTAVE_API aepbalance (const MT& a, bool noperm = false, bool noscal = false); aepbalance (const aepbalance& a) : m_balanced_mat (a.m_balanced_mat), m_scale (a.m_scale), m_ilo(a.m_ilo), m_ihi(a.m_ihi), m_job(a.m_job) { } aepbalance& operator = (const aepbalance& a) { if (this != &a) { m_balanced_mat = a.m_balanced_mat; m_scale = a.m_scale; m_ilo = a.m_ilo; m_ihi = a.m_ihi; m_job = a.m_job; } return *this; } virtual ~aepbalance (void) = default; OCTAVE_API MT balancing_matrix (void) const; MT balanced_matrix (void) const { return m_balanced_mat; } VT permuting_vector (void) const { octave_idx_type n = m_balanced_mat.rows (); VT pv (n); for (octave_idx_type i = 0; i < n; i++) pv(i) = i+1; for (octave_idx_type i = n-1; i >= m_ihi; i--) { octave_idx_type j = m_scale(i) - 1; std::swap (pv(i), pv(j)); } for (octave_idx_type i = 0; i < m_ilo-1; i++) { octave_idx_type j = m_scale(i) - 1; std::swap (pv(i), pv(j)); } return pv; } VT scaling_vector (void) const { octave_idx_type n = m_balanced_mat.rows (); VT scv (n); for (octave_idx_type i = 0; i < m_ilo-1; i++) scv(i) = 1; for (octave_idx_type i = m_ilo-1; i < m_ihi; i++) scv(i) = m_scale(i); for (octave_idx_type i = m_ihi; i < n; i++) scv(i) = 1; return scv; } protected: MT m_balanced_mat; VT m_scale; octave_idx_type m_ilo; octave_idx_type m_ihi; char m_job; }; } } #endif