Gabriele Cosmo
82 lines
3.1 KiB
Plaintext
82 lines
3.1 KiB
Plaintext
//
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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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// Implementation of inline methods of G4SurfBits
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// --------------------------------------------------------------------
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inline void G4SurfBits::SetBitNumber(unsigned int bitnumber, G4bool value)
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{
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// set bit number 'bitnumber' to be value
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if (bitnumber >= fNBits)
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{
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unsigned int new_size = (bitnumber/8) + 1;
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if (new_size > fNBytes)
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{
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if (new_size < 100 * 1024 * 1024) { new_size *= 2; }
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unsigned char *old_location = fAllBits;
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fAllBits = new unsigned char[new_size];
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std::memcpy(fAllBits,old_location,fNBytes);
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std::memset(fAllBits+fNBytes ,0, new_size-fNBytes);
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fNBytes = new_size;
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delete [] old_location;
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}
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fNBits = bitnumber+1;
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}
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unsigned int loc = bitnumber/8;
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unsigned char bit = bitnumber%8;
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if (value)
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{
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fAllBits[loc] |= (1<<bit);
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}
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else
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{
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fAllBits[loc] &= (0xFF ^ (1<<bit));
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}
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}
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inline G4bool G4SurfBits::TestBitNumber(unsigned int bitnumber) const
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{
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// Return the current value of the bit
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if (bitnumber >= fNBits) { return false; }
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unsigned int loc = bitnumber/8;
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unsigned char value = fAllBits[loc];
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unsigned char bit = bitnumber%8;
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G4bool result = (value & (1<<bit)) != 0;
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return result;
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// short: return 0 != (fAllBits[bitnumber/8] & (1<< (bitnumber%8)));
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}
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inline void G4SurfBits::ResetBitNumber(unsigned int bitnumber)
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{
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SetBitNumber(bitnumber,false);
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}
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inline G4bool G4SurfBits::operator[](unsigned int bitnumber) const
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{
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return TestBitNumber(bitnumber);
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}
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