/usr/include/root/Fit/ParameterSettings.h is in libroot-math-mathcore-dev 5.34.14-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Author: L. Moneta Thu Sep 21 16:21:48 2006
/**********************************************************************
* *
* Copyright (c) 2006 LCG ROOT Math Team, CERN/PH-SFT *
* *
* *
**********************************************************************/
// Header file for class ParameterSettings
#ifndef ROOT_Fit_ParameterSettings
#define ROOT_Fit_ParameterSettings
#include <string>
#ifndef ROOT_Math_Error
#include "Math/Error.h"
#endif
namespace ROOT {
namespace Fit {
//___________________________________________________________________________________
/**
Class, describing value, limits and step size of the parameters
Provides functionality also to set/retrieve values, step sizes, limits and fix the
parameters.
To be done: add constraints (equality and inequality) as functions of the parameters
@ingroup FitMain
*/
class ParameterSettings {
public:
/**
Default constructor
*/
ParameterSettings () :
fValue(0.), fStepSize(0.1), fFix(false),
fLowerLimit(0.), fUpperLimit(0.), fHasLowerLimit(false), fHasUpperLimit(false),
fName("")
{}
///constructor for unlimited named Parameter
ParameterSettings(const std::string & name, double val, double err) :
fValue(val), fStepSize(err), fFix(false),
fLowerLimit(0.), fUpperLimit(0.), fHasLowerLimit(false), fHasUpperLimit(false),
fName(name)
{}
///constructor for double limited Parameter
ParameterSettings(const std::string & name, double val, double err,
double min, double max) :
fValue(val), fStepSize(err), fFix(false),
fLowerLimit(0.), fUpperLimit(0.), fHasLowerLimit(false), fHasUpperLimit(false),
fName(name)
{
SetLimits(min,max);
}
///constructor for fixed Parameter
ParameterSettings(const std::string & name, double val) :
fValue(val), fStepSize(0), fFix(true),
fLowerLimit(0.), fUpperLimit(0.), fHasLowerLimit(false), fHasUpperLimit(false),
fName(name)
{}
/// set value and name (unlimited parameter)
void Set(const std::string & name, double value, double step) {
SetName(name);
SetValue(value);
SetStepSize(step);
}
/// set a limited parameter
void Set(const std::string & name, double value, double step, double lower, double upper ) {
SetName(name);
SetValue(value);
SetStepSize(step);
SetLimits(lower,upper);
}
/// set a fixed parameter
void Set(const std::string & name, double value) {
SetName(name);
SetValue(value);
Fix();
}
/**
Destructor (no operations)
*/
~ParameterSettings () {}
/// copy constructor and assignment operators (leave them to the compiler)
public:
/// return parameter value
double Value() const { return fValue; }
/// return step size
double StepSize() const { return fStepSize; }
/// return lower limit value
double LowerLimit() const {return fLowerLimit;}
/// return upper limit value
double UpperLimit() const {return fUpperLimit;}
/// check if is fixed
bool IsFixed() const { return fFix; }
/// check if parameter has lower limit
bool HasLowerLimit() const {return fHasLowerLimit; }
/// check if parameter has upper limit
bool HasUpperLimit() const {return fHasUpperLimit; }
/// check if is bound
bool IsBound() const { return fHasLowerLimit || fHasUpperLimit; }
/// check if is double bound (upper AND lower limit)
bool IsDoubleBound() const { return fHasLowerLimit && fHasUpperLimit; }
/// return name
const std::string & Name() const { return fName; }
/** interaction **/
/// set name
void SetName(const std::string & name ) { fName = name; }
/// fix the parameter
void Fix() {fFix = true;}
/// release the parameter
void Release() {fFix = false;}
/// set the value
void SetValue(double val) {fValue = val;}
/// set the step size
void SetStepSize(double err) {fStepSize = err;}
/// set a double side limit,
/// if low == up the parameter is fixedm if low > up the limits are removed
void SetLimits(double low, double up) {
if ( low > up ) {
RemoveLimits();
return;
}
if (low == up && low == fValue) {
Fix();
return;
}
if (low > fValue || up < fValue) {
MATH_ERROR_MSG("ParameterSettings","Invalid lower/upper bounds - ignoring the bounds ");
}
fLowerLimit = low;
fUpperLimit = up;
fHasLowerLimit = true;
fHasUpperLimit = true;
}
/// set a single upper limit
void SetUpperLimit(double up) {
fLowerLimit = 0.;
fUpperLimit = up;
fHasLowerLimit = false;
fHasUpperLimit = true;
}
/// set a single lower limit
void SetLowerLimit(double low) {
fLowerLimit = low;
fUpperLimit = 0.;
fHasLowerLimit = true;
fHasUpperLimit = false;
}
/// remove all limit
void RemoveLimits() {
fLowerLimit = 0.;
fUpperLimit = 0.;
fHasLowerLimit = false;
fHasUpperLimit = false;
}
protected:
private:
double fValue; // parameter value
double fStepSize; // parameter step size (used by minimizer)
bool fFix; // flag to control if parameter is fixed
double fLowerLimit; // lower parameter limit
double fUpperLimit; // upper parameter limit
bool fHasLowerLimit; // flag to control lower parameter limit
bool fHasUpperLimit; // flag to control upper parameter limit
std::string fName; // parameter name
};
} // end namespace Fit
} // end namespace ROOT
#endif /* ROOT_Fit_ParameterSettings */
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