CLHEP VERSION Reference Documentation
CLHEP Home Page
CLHEP Documentation
CLHEP Bug Reports
Main Page
Namespaces
Classes
Files
File List
File Members
GenericFunctions
src
Exponential.cc
Go to the documentation of this file.
1
// -*- C++ -*-
2
// $Id: Exponential.cc,v 1.4 2003/10/10 17:40:39 garren Exp $
3
#include "
CLHEP/GenericFunctions/Exponential.hh
"
4
#include <assert.h>
5
#include <cmath>
// for exp()
6
7
namespace
Genfun {
8
FUNCTION_OBJECT_IMP
(Exponential)
9
10
Exponential
::
Exponential
():
11
_decayConstant("Decay Constant", 1.0, 0,10)
12
{}
13
14
Exponential::Exponential
(
const
Exponential
& right):
15
AbsFunction
(right),
16
_decayConstant(right._decayConstant)
17
{
18
}
19
20
Exponential::~Exponential
() {
21
}
22
23
double
Exponential::operator()
(
double
x)
const
{
24
if
(x<0)
return
0;
25
return
exp(-x/_decayConstant.
getValue
())/_decayConstant.
getValue
();
26
}
27
28
Parameter
&
Exponential::decayConstant
() {
29
return
_decayConstant;
30
}
31
32
const
Parameter
&
Exponential::decayConstant
()
const
{
33
return
_decayConstant;
34
}
35
36
37
Derivative
Exponential::partial
(
unsigned
int
index)
const
{
38
assert(index==0);
39
const
AbsFunction
& fPrime = -_decayConstant*(*this);
40
return
Derivative
(&fPrime);
41
}
42
43
44
}
// namespace Genfun
Genfun::AbsFunction
Definition:
CLHEP/GenericFunctions/AbsFunction.hh:48
Genfun::Exponential::decayConstant
Parameter & decayConstant()
Definition:
Exponential.cc:28
Genfun::Exponential::Exponential
Exponential()
Definition:
Exponential.cc:10
Genfun::Exponential
Definition:
CLHEP/GenericFunctions/Exponential.hh:20
Exponential.hh
Genfun::Exponential::operator()
virtual double operator()(double argument) const
Definition:
Exponential.cc:23
Genfun::Exponential::partial
Derivative partial(unsigned int) const
Definition:
Exponential.cc:37
Genfun::Derivative
FunctionNoop Derivative
Definition:
CLHEP/GenericFunctions/AbsFunction.hh:40
FUNCTION_OBJECT_IMP
#define FUNCTION_OBJECT_IMP(classname)
Definition:
CLHEP/GenericFunctions/AbsFunction.hh:156
Genfun::FunctionNoop
Definition:
CLHEP/GenericFunctions/FunctionNoop.hh:19
Genfun::Parameter
Definition:
CLHEP/GenericFunctions/Parameter.hh:35
Genfun::Exponential::~Exponential
virtual ~Exponential()
Definition:
Exponential.cc:20
Genfun::Parameter::getValue
virtual double getValue() const
Definition:
Parameter.cc:27
Generated on Sat Dec 14 2013 08:54:15 for CLHEP by
1.8.5