MPQC 2.3.1
math/optimize/transform.h
1//
2// transform.h
3//
4// Copyright (C) 1996 Limit Point Systems, Inc.
5//
6// Author: Curtis Janssen <cljanss@limitpt.com>
7// Maintainer: LPS
8//
9// This file is part of the SC Toolkit.
10//
11// The SC Toolkit is free software; you can redistribute it and/or modify
12// it under the terms of the GNU Library General Public License as published by
13// the Free Software Foundation; either version 2, or (at your option)
14// any later version.
15//
16// The SC Toolkit is distributed in the hope that it will be useful,
17// but WITHOUT ANY WARRANTY; without even the implied warranty of
18// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19// GNU Library General Public License for more details.
20//
21// You should have received a copy of the GNU Library General Public License
22// along with the SC Toolkit; see the file COPYING.LIB. If not, write to
23// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
24//
25// The U.S. Government is granted a limited license as per AL 91-7.
26//
27
28#ifndef _math_optimize_transform_h
29#define _math_optimize_transform_h
30
31#ifdef __GNUC__
32#pragma interface
33#endif
34
35#include <math/scmat/matrix.h>
36
37namespace sc {
38
42class NonlinearTransform: public RefCount {
43 protected:
44 // The linear part of the nonlinear transform. This must
45 // be initialized by derived classes in their
46 // transform_coordinates routine (or the transform
47 // members must be overridden so it is ignored).
48 RefSCMatrix linear_transform_;
49 public:
51
53 virtual void transform_coordinates(const RefSCVector& x) = 0;
57 virtual void transform_gradient(const RefSCVector& g);
61 virtual void transform_hessian(const RefSymmSCMatrix& h);
65 virtual void transform_ihessian(const RefSymmSCMatrix &ih);
66};
67
68
69
84
85}
86
87#endif
88
89// Local Variables:
90// mode: c++
91// c-file-style: "CLJ"
92// End:
The IdentityTransform is a special case of NonlinearTransform were no transformation takes place.
Definition math/optimize/transform.h:73
void transform_gradient(const RefSCVector &g)
Transform the gradient at a point in the new coordinate system.
void transform_ihessian(const RefSymmSCMatrix &ih)
Transform the inverse of the hessian.
void transform_hessian(const RefSymmSCMatrix &h)
Transform the hessian to the new coordinate system.
void transform_coordinates(const RefSCVector &x)
These override the tranformation members of NonlinearTransform and do nothing.
The NonlinearTransform class transforms between two nonlinear coordinate systems.
Definition math/optimize/transform.h:42
virtual void transform_hessian(const RefSymmSCMatrix &h)
Transform the hessian to the new coordinate system.
virtual void transform_ihessian(const RefSymmSCMatrix &ih)
Transform the inverse of the hessian.
virtual void transform_coordinates(const RefSCVector &x)=0
Transform the coordinates.
virtual void transform_gradient(const RefSCVector &g)
Transform the gradient at a point in the new coordinate system.
The RefSCMatrix class is a smart pointer to an SCMatrix specialization.
Definition matrix.h:135
The RefSCVector class is a smart pointer to an SCVector specialization.
Definition matrix.h:55
The RefSymmSCMatrix class is a smart pointer to an SCSymmSCMatrix specialization.
Definition matrix.h:261

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