Gabriele Cosmo
101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
//
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// ********************************************************************
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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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//
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#ifndef MOLECULAR_UTILITY_FUNCTIONS_HH
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#define MOLECULAR_UTILITY_FUNCTIONS_HH
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#include "G4ThreeVector.hh"
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#include "globals.hh"
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#include <array>
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#include <string>
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#include <vector>
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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namespace utility
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{
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std::vector<G4String>& Split(const G4String&, char, std::vector<G4String>&);
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std::vector<G4String> Split(const G4String&, char);
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G4String Get_seperated_element(const G4String&, char, G4int);
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std::array<G4String, 4> Get_four_elements(const G4String&, char);
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G4bool Path_exists(const G4String&);
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G4String Getcwd();
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G4double Min(const G4ThreeVector&);
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// sign function
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template<typename T>
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[[maybe_unused]] inline constexpr G4int Signum(T, std::false_type);
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template<typename T>
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inline constexpr int Signum(T, std::true_type);
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template<typename T>
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inline constexpr int Signum(T);
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// find last (highest) significant bit
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// linux implementation, copied for portability
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// http://lxr.linux.no/#linux+v2.6.26.5/include/asm-generic/bitops/fls.h
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static inline int Fls(int x)
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{
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int r = 32;
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if (!x) return 0;
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if (!(x & 0xffff0000u)) {
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x <<= 16;
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r -= 16;
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}
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if (!(x & 0xff000000u)) {
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x <<= 8;
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r -= 8;
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}
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if (!(x & 0xf0000000u)) {
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x <<= 4;
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r -= 4;
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}
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if (!(x & 0xc0000000u)) {
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x <<= 2;
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r -= 2;
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}
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if (!(x & 0x80000000u)) {
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x <<= 1;
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r -= 1;
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}
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return r;
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}
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} // namespace utility
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#endif // MOLECULAR_UTILITY_FUNCTIONS_HH
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