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SqrtLowParameterTransformation.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 #ifndef ROOT_Minuit2_SqrtLowParameterTransformation
16 #define ROOT_Minuit2_SqrtLowParameterTransformation
17 
18 namespace ROOT {
19 
20 namespace Minuit2 {
21 
22 class MnMachinePrecision;
23 
24 /**
25  * Transformation from external to internal Parameter based on sqrt(1 + x**2)
26  *
27  * This transformation applies for the case of single side Lower Parameter limits
28  */
29 
30 class SqrtLowParameterTransformation /* : public ParameterTransformation */ {
31 
32 public:
34 
36 
37  // transformation from internal to external
38  double Int2ext(double Value, double Lower) const;
39 
40  // transformation from external to internal
41  double Ext2int(double Value, double Lower, const MnMachinePrecision &) const;
42 
43  // derivative of transformation from internal to external
44  double DInt2Ext(double Value, double Lower) const;
45 
46 private:
47 };
48 
49 } // namespace Minuit2
50 
51 } // namespace ROOT
52 
53 #endif
ROOT::Minuit2::SqrtLowParameterTransformation::DInt2Ext
double DInt2Ext(double Value, double Lower) const
Definition: SqrtLowParameterTransformation.cxx:40
ROOT::Minuit2::SqrtLowParameterTransformation::Ext2int
double Ext2int(double Value, double Lower, const MnMachinePrecision &) const
Definition: SqrtLowParameterTransformation.cxx:29
ROOT::Minuit2::SqrtLowParameterTransformation
Transformation from external to internal Parameter based on sqrt(1 + x**2)
Definition: SqrtLowParameterTransformation.h:30
Value
Definition: functioncalls.h:15
ROOT::Minuit2::MnMachinePrecision
Sets the relative floating point (double) arithmetic precision.
Definition: MnMachinePrecision.h:32
ROOT::Minuit2::SqrtLowParameterTransformation::Int2ext
double Int2ext(double Value, double Lower) const
Definition: SqrtLowParameterTransformation.cxx:22
ROOT::Minuit2::SqrtLowParameterTransformation::SqrtLowParameterTransformation
SqrtLowParameterTransformation()
Definition: SqrtLowParameterTransformation.h:33
ROOT::Minuit2::SqrtLowParameterTransformation::~SqrtLowParameterTransformation
~SqrtLowParameterTransformation()
Definition: SqrtLowParameterTransformation.h:35
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