mirror of
https://gitlab.kitware.com/vtk/vtk-m
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66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//
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// Copyright 2016 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2016 UT-Battelle, LLC.
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// Copyright 2016 Los Alamos National Security.
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//
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// Under the terms of Contract DE-NA0003525 with NTESS,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#ifndef vtk_m_Bitset_h
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#define vtk_m_Bitset_h
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#include <assert.h>
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#include <limits>
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#include <vtkm/Types.h>
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#include <vtkm/internal/ExportMacros.h>
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namespace vtkm
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{
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/// \brief A bitmap to serve different needs.
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/// Ex. Editing particular bits in a byte(s), checkint if particular bit values
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/// are present or not. Once Cuda supports std::bitset, we should use the
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/// standard one if possible
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template <typename MaskType>
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struct Bitset
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{
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VTKM_EXEC_CONT void set(vtkm::Id bitIndex)
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{
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this->Mask = this->Mask | (static_cast<MaskType>(1) << bitIndex);
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}
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VTKM_EXEC_CONT void reset(vtkm::Id bitIndex)
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{
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this->Mask = this->Mask & ~(static_cast<MaskType>(1) << bitIndex);
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}
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VTKM_EXEC_CONT void toggle(vtkm::Id bitIndex)
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{
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this->Mask = this->Mask ^ (static_cast<MaskType>(0) << bitIndex);
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}
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VTKM_EXEC_CONT bool test(vtkm::Id bitIndex)
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{
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return ((this->Mask & (static_cast<MaskType>(1) << bitIndex)) != 0);
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}
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private:
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MaskType Mask = 0;
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};
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} // namespace vtkm
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#endif //vtk_m_Bitset_h
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