mbsim 4.0.0 MBSim Kernel

lsode_integrator.h
1 /* Copyright (C) 2004-2006 Martin Förg
2
3 * This library is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU Lesser General Public
5 * License as published by the Free Software Foundation; either
6 * version 2.1 of the License, or (at your option) any later version.
7 *
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * Lesser General Public License for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public
14 * License along with this library; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16
17 *
18 * Contact:
19 * martin.o.foerg@googlemail.com
20 *
21 */
22
23 #ifndef _LSODE_INTEGRATOR_H_
24 #define _LSODE_INTEGRATOR_H_
25
26 #include "root_finding_integrator.h"
27
28 namespace MBSim {
29
30 extern bool odePackInUse;
31
39 class LSODEIntegrator : public RootFindingIntegrator {
40
41 public:
42
43 enum Method {
44 nonstiff=10,
45 stiff=22,
46 unknown
47 };
48
49 private:
50
51 static void fzdot(int* neq, double* t, double* z_, double* zd_);
52
54 double dtMax{0};
56 double dtMin{0};
58 fmatvec::Vec aTol;
60 fmatvec::Vec rTol;
62 double dt0{0};
64 int maxSteps{10000};
66 Method method{nonstiff};
67
68 public:
69
70 void setMaximumStepSize(double dtMax_) { dtMax = dtMax_; }
71 void setMinimumStepSize(double dtMin_) { dtMin = dtMin_; }
72 void setAbsoluteTolerance(const fmatvec::Vec &aTol_) { aTol <<= aTol_; }
73 void setAbsoluteTolerance(double aTol_) { aTol.resize(1,fmatvec::INIT,aTol_); }
74 void setRelativeTolerance(const fmatvec::Vec &rTol_) { rTol <<= rTol_; }
75 void setRelativeTolerance(double rTol_) { rTol.resize(1,fmatvec::INIT,rTol_); }
76 void setInitialStepSize(double dt0_) { dt0 = dt0_; }
77 void setStepLimit(int maxSteps_) { maxSteps = maxSteps_; }
78 void setMethod(Method method_) { method = method_; }
79
80 using Integrator::integrate;
81 void integrate();
82
83 virtual void initializeUsingXML(xercesc::DOMElement *element);
84 };
85
86 }
87
88 #endif
MBSim::LSODEIntegrator::initializeUsingXML
virtual void initializeUsingXML(xercesc::DOMElement *element)
initialize integrator
Definition: lsode_integrator.cc:253
MBSim::LSODEIntegrator::aTol
fmatvec::Vec aTol
Definition: lsode_integrator.h:58
MBSim::LSODEIntegrator::dtMax
double dtMax
Definition: lsode_integrator.h:54
MBSim::LSODEIntegrator::rTol
fmatvec::Vec rTol
Definition: lsode_integrator.h:60
MBSim::RootFindingIntegrator
Integrator with root-finding.
Definition: root_finding_integrator.h:32
MBSim::LSODEIntegrator
Hindmarsh’s ODE solver LSODE.
Definition: lsode_integrator.h:39
MBSim::Integrator::integrate
virtual void integrate()=0
start the integration of the system set by setSystem. Each class implemeting this function should cal...
MBSim::LSODEIntegrator::method
Method method
Definition: lsode_integrator.h:66
MBSim::LSODEIntegrator::dt0
double dt0
Definition: lsode_integrator.h:62
MBSim::LSODEIntegrator::dtMin
double dtMin
Definition: lsode_integrator.h:56
MBSim::LSODEIntegrator::integrate
void integrate()
start the integration of the system set by setSystem. Each class implemeting this function should cal...
Definition: lsode_integrator.cc:53
MBSim::LSODEIntegrator::maxSteps
int maxSteps
Definition: lsode_integrator.h:64
MBSim
namespace MBSim
Definition: bilateral_constraint.cc:30