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GSLMonteFunctionAdapter.h
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1// @(#)root/mathmore:$Id$
2// Authors: L. Moneta, 08/2007
3
4 /**********************************************************************
5 * *
6 * Copyright (c) 2004 ROOT Foundation, CERN/PH-SFT *
7 * *
8 * This library is free software; you can redistribute it and/or *
9 * modify it under the terms of the GNU General Public License *
10 * as published by the Free Software Foundation; either version 2 *
11 * of the License, or (at your option) any later version. *
12 * *
13 * This library is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
16 * General Public License for more details. *
17 * *
18 * You should have received a copy of the GNU General Public License *
19 * along with this library (see file COPYING); if not, write *
20 * to the Free Software Foundation, Inc., 59 Temple Place, Suite *
21 * 330, Boston, MA 02111-1307 USA, or contact the author. *
22 * *
23 **********************************************************************/
24
25// Header file for class GSLMultiMinFunctionAdapter
26//
27// Generic adapter for gsl_multimin_function signature
28// usable for any c++ class which defines operator( )
29//
30// Created by: Lorenzo Moneta at Fri Nov 12 16:58:51 2004
31//
32// Last update: Fri Nov 12 16:58:51 2004
33//
34#ifndef ROOT_Math_GSLMonteFunctionAdapter
35#define ROOT_Math_GSLMonteFunctionAdapter
36
37
38namespace ROOT {
39namespace Math {
40
41
42 /**
43 Class for adapting any multi-dimension C++ functor class to C function pointers used by
44 GSL MonteCarlo integration algorithms.
45 The templated C++ function class must implement:
46
47 <em> double operator( const double * x)</em>
48
49 This class defines static methods with will be used to fill the
50 \a gsl_monte_function used by GSL.
51 See for examples the
52 <A HREF="http://www.gnu.org/software/gsl/manual/html_node/Monte-Carlo-Interface.html">GSL online manual</A>
53
54 @ingroup MCIntegration
55 */
56 typedef double ( * GSLMonteFuncPointer ) ( double *, size_t, void *);
57
58 template<class UserFunc>
60
61 static double F( double * x, size_t, void * p) {
62
63 UserFunc * function = reinterpret_cast< UserFunc *> (p);
64 return (*function)( x );
65 }
66
67 };
68
69
70
71} // namespace Math
72} // namespace ROOT
73
74
75#endif /* ROOT_Math_GSLMonteFunctionAdapter */
double
Definition: Converters.cxx:939
double(* GSLMonteFuncPointer)(double *, size_t, void *)
Class for adapting any multi-dimension C++ functor class to C function pointers used by GSL MonteCarl...
Double_t x[n]
Definition: legend1.C:17
Namespace for new Math classes and functions.
void function(const Char_t *name_, T fun, const Char_t *docstring=0)
Definition: RExports.h:152
tbb::task_arena is an alias of tbb::interface7::task_arena, which doesn't allow to forward declare tb...
static double F(double *x, size_t, void *p)