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SqrtUpParameterTransformation.h
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1 // @(#)root/minuit2:$Id$
2 // Authors: M. Winkler, F. James, L. Moneta, A. Zsenei 2003-2005
3 
4 /**********************************************************************
5  * *
6  * Copyright (c) 2005 LCG ROOT Math team, CERN/PH-SFT *
7  * *
8  **********************************************************************/
9 
10 // Project : LCG
11 // Package : Minuit
12 // Author : Lorenzo.MONETA@cern.ch
13 // Created by: moneta at Thu Apr 8 10:26:22 2004
14 
15 
16 #ifndef ROOT_Minuit2_SqrtUpParameterTransformation
17 #define ROOT_Minuit2_SqrtUpParameterTransformation
18 
19 
20 namespace ROOT {
21 
22  namespace Minuit2 {
23 
24 
25 class MnMachinePrecision;
26 
27 
28 /**
29  * Transformation from external to internal Parameter based on sqrt(1 + x**2)
30  *
31  * This transformation applies for the case of single side Upper Parameter limits
32  */
33 
34 class SqrtUpParameterTransformation /* : public ParameterTransformation */ {
35 
36 public:
37 
38  // create with user defined precision
40 
42 
43  // transformation from internal to external
44  double Int2ext(double Value, double Upper) const;
45 
46  // transformation from external to internal
47  double Ext2int(double Value, double Upper, const MnMachinePrecision&) const;
48 
49  // derivative of transformation from internal to external
50  double DInt2Ext(double Value, double Upper) const;
51 
52 private:
53 
54 };
55 
56  } // namespace Minuit2
57 
58 } // namespace ROOT
59 
60 #endif
ROOT::Minuit2::SqrtUpParameterTransformation::DInt2Ext
double DInt2Ext(double Value, double Upper) const
Definition: SqrtUpParameterTransformation.cxx:51
ROOT::Minuit2::SqrtUpParameterTransformation::~SqrtUpParameterTransformation
~SqrtUpParameterTransformation()
Definition: SqrtUpParameterTransformation.h:49
ROOT::Minuit2::SqrtUpParameterTransformation::Ext2int
double Ext2int(double Value, double Upper, const MnMachinePrecision &) const
Definition: SqrtUpParameterTransformation.cxx:40
ROOT::Minuit2::SqrtUpParameterTransformation::SqrtUpParameterTransformation
SqrtUpParameterTransformation()
Definition: SqrtUpParameterTransformation.h:47
Value
Definition: functioncalls.h:15
ROOT::Minuit2::MnMachinePrecision
Sets the relative floating point (double) arithmetic precision.
Definition: MnMachinePrecision.h:41
ROOT::Minuit2::SqrtUpParameterTransformation::Int2ext
double Int2ext(double Value, double Upper) const
Definition: SqrtUpParameterTransformation.cxx:33
ROOT
VSD Structures.
Definition: StringConv.hxx:21