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geant4/source/analysis/accumulables/include/G4MergeMode.hh
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2018-12-07 15:15:39 +01:00

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//
// ********************************************************************
// * License and Disclaimer *
// * *
// * The Geant4 software is copyright of the Copyright Holders of *
// * the Geant4 Collaboration. It is provided under the terms and *
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// * This code implementation is the result of the scientific and *
// * technical work of the GEANT4 collaboration. *
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// ********************************************************************
//
// Author: Ivana Hrivnacova, 04/07/2012 (ivana@ipno.in2p3.fr)
#ifndef G4MergeMode_h
#define G4MergeMode_h 1
#include "globals.hh"
#include <functional>
#include <cmath>
// Enumeration for definition available binning schemes
enum class G4MergeMode {
kAddition, // "Or" if boolean type
kMultiplication, // "And" if boolean type
kMaximum, // "Or" if boolean type
kMinimum // "And" if boolean type
};
// Generic merge function
template <typename T>
using G4MergeFunction = std::function<T(const T&, const T&)>;
// Utility functions
namespace G4Accumulables {
G4MergeMode GetMergeMode(const G4String& mergeModeName);
template <typename T>
G4MergeFunction<T> GetMergeFunction(G4MergeMode mergeMode)
{
switch ( mergeMode ) {
case G4MergeMode::kAddition:
// return std::bind([](const T& x, const T& y) { return x + y; });
return [](const T& x, const T& y) { return x + y; };
case G4MergeMode::kMultiplication:
return [](const T& x, const T& y) { return x * y; };
case G4MergeMode::kMaximum:
// return std::bind([](const T& x, const T& y) { return std::max(x,y);});
return [](const T& x, const T& y) { return std::max(x,y); };
case G4MergeMode::kMinimum:
// return std::bind([](const T& x, const T& y) { return std::min(x,y);});
return [](const T& x, const T& y) { return std::min(x,y); };
}
}
template <G4bool>
G4MergeFunction<G4bool> GetMergeFunction(G4MergeMode mergeMode)
{
switch ( mergeMode ) {
case G4MergeMode::kAddition:
case G4MergeMode::kMaximum:
// return std::bind([](const T& x, const T& y) { return x + y; });
return [](const G4bool& x, const G4bool& y) { return x || y; };
case G4MergeMode::kMultiplication:
case G4MergeMode::kMinimum:
return [](const G4bool& x, const G4bool& y) { return x && y; };
}
}
}
#endif