Gabriele Cosmo
117 lines
3.8 KiB
C++
117 lines
3.8 KiB
C++
// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// Helper namespace field_utils
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//
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// Description:
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//
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// Simple methods to extract vectors from arrays in conventions of
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// the magnetic field integration.
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// Author: Dmitry Sorokin, Google Summer of Code 2017
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// Supervision: John Apostolakis, CERN
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// --------------------------------------------------------------------
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#ifndef G4FIELD_UTILS_HH
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#define G4FIELD_UTILS_HH
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#include "G4FieldTrack.hh"
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#include "G4Types.hh"
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#include "G4ThreeVector.hh"
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namespace field_utils
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{
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using State = G4double[G4FieldTrack::ncompSVEC];
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template <unsigned int N>
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using ShortState = G4double[N];
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enum class Value3D
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{
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Position = 0,
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Momentum = 3,
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Spin = 9
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};
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enum class Value1D
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{
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KineticEnergy = 6,
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LabTime = 7,
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ProperTime = 8
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};
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template <typename ArrayType>
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G4double getValue(const ArrayType& array, Value1D value);
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template <typename ArrayType>
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G4double getValue2(const ArrayType& array, Value1D value);
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template <typename ArrayType>
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G4double getValue(const ArrayType& array, Value3D value);
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template <typename ArrayType>
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G4double getValue2(const ArrayType& array, Value3D value);
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template <typename ArrayType>
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G4ThreeVector makeVector(const ArrayType& array, Value3D value);
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G4double absoluteError(
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const G4double y[],
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const G4double yerr[],
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G4double hstep);
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G4double relativeError2(
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const G4double y[],
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const G4double yerr[],
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G4double hstep,
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G4double errorTolerance);
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G4double relativeError(
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const G4double y[],
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const G4double yerr[],
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G4double hstep,
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G4double errorTolerance);
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template <typename SourceArray, typename TargetArray>
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void setValue(const SourceArray& src, Value1D value, TargetArray& trg);
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template <typename SourceArray, typename TargetArray, typename ...TargetArrays>
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void setValue(const SourceArray& src, Value1D value,
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TargetArray& trg, TargetArrays&... trgs);
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void copy(G4double dst[], const G4double src[],
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size_t size = G4FieldTrack::ncompSVEC);
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G4double inverseCurvatureRadius(G4double particleCharge,
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G4double momentum, G4double BField);
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template <typename T>
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T clamp(T value, T lo, T hi);
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} // field_utils
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#include "G4FieldUtils.icc"
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#endif
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