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identity_function.h
1 /* Copyright (C) 2004-2014 MBSim Development Team
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  * Contact: martin.o.foerg@gmail.com
18  */
19 
20 #ifndef _IDENTITY_FUNCTION_H_
21 #define _IDENTITY_FUNCTION_H_
22 
23 #include "mbsim/functions/function.h"
24 
25 namespace MBSim {
26 
27  template<typename Sig> class IdentityFunction;
28 
29  template<typename Ret, typename Arg>
30  class IdentityFunction<Ret(Arg)> : public Function<Ret(Arg)> {
32  public:
33  int getArgSize() const { return 1; }
34  Ret operator()(const Arg &x) { return FromDouble<Ret>::cast(ToDouble<Arg>::cast(x)); }
35  typename B::DRetDArg parDer(const Arg &x) { return FromDouble<Ret>::cast(1); }
36  typename B::DRetDArg parDerDirDer(const Arg &xDir, const Arg &x) { return FromDouble<Ret>::cast(0); }
37  Ret parDerParDer(const double &x) { return FromDouble<Ret>::cast(0); }
38  };
39 
40 }
41 
42 #endif
Definition: utils.h:153
Definition: identity_function.h:27
Definition: utils.h:197
Definition: planar_contour.h:31

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