EvtGen 2.2.0
Monte Carlo generator of particle decays, in particular the weak decays of heavy flavour particles such as B mesons.
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EvtItgAbsFunction.cpp
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1
2/***********************************************************************
3* Copyright 1998-2020 CERN for the benefit of the EvtGen authors *
4* *
5* This file is part of EvtGen. *
6* *
7* EvtGen is free software: you can redistribute it and/or modify *
8* it under the terms of the GNU General Public License as published by *
9* the Free Software Foundation, either version 3 of the License, or *
10* (at your option) any later version. *
11* *
12* EvtGen is distributed in the hope that it will be useful, *
13* but WITHOUT ANY WARRANTY; without even the implied warranty of *
14* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15* GNU General Public License for more details. *
16* *
17* You should have received a copy of the GNU General Public License *
18* along with EvtGen. If not, see <https://www.gnu.org/licenses/>. *
19***********************************************************************/
20
22
23//-------------
24// C Headers --
25//-------------
26extern "C" {
27}
29
30#include "assert.h"
31using std::endl;
32
37
38double EvtItgAbsFunction::value( double x ) const
39{
40 if ( x >= m_lowerRange && x <= m_upperRange )
41 return myFunction( x );
42 EvtGenReport( EVTGEN_ERROR, "EvtGen" )
43 << "Error in EvtItgAbsFunction::value. Given co-ordinate " << x
44 << " is outside of allowed range [" << m_lowerRange << ", "
45 << m_upperRange << "]. Returning 0.0" << endl;
46 return 0.0; // Never get here
47}
48
49double EvtItgAbsFunction::operator()( double x ) const
50{
51 return myFunction( x );
52}
std::ostream & EvtGenReport(EvtGenSeverity severity, const char *facility=nullptr)
Definition EvtReport.cpp:32
@ EVTGEN_ERROR
Definition EvtReport.hh:49
virtual double operator()(double x) const
EvtItgAbsFunction(double lowerRange, double upperRange)
double lowerRange() const
double upperRange() const
virtual double myFunction(double x) const =0
virtual double value(double x) const