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Reference Guide
SqrtUpParameterTransformation.h
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1// @(#)root/minuit2:$Id$
2// Authors: M. Winkler, F. James, L. Moneta, A. Zsenei, E.G.P. Bos 2003-2017
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_SqrtUpParameterTransformation
16#define ROOT_Minuit2_SqrtUpParameterTransformation
17
18namespace ROOT {
19
20namespace Minuit2 {
21
22class 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 Upper Parameter limits
28 */
29
30class SqrtUpParameterTransformation /* : public ParameterTransformation */ {
31
32public:
33 // create with user defined precision
35
37
38 // transformation from internal to external
39 long double Int2ext(long double Value, long double Upper) const;
40
41 // transformation from external to internal
42 long double Ext2int(long double Value, long double Upper, const MnMachinePrecision &) const;
43
44 // derivative of transformation from internal to external
45 long double DInt2Ext(long double Value, long double Upper) const;
46
47private:
48};
49
50} // namespace Minuit2
51
52} // namespace ROOT
53
54#endif
Sets the relative floating point (double) arithmetic precision.
Transformation from external to internal Parameter based on sqrt(1 + x**2)
long double Int2ext(long double Value, long double Upper) const
long double DInt2Ext(long double Value, long double Upper) const
long double Ext2int(long double Value, long double Upper, const MnMachinePrecision &) const
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