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Add special named flag for invalid particles #3688

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Jan 12, 2024
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3 changes: 2 additions & 1 deletion Src/Particle/AMReX_Particle.H
Original file line number Diff line number Diff line change
Expand Up @@ -15,13 +15,14 @@ namespace amrex {

namespace
{
/** Used for 64bit Long particle Ids as in AoS layout */
/** Special flags used for 64-bit Long particle Ids */
namespace LongParticleIds {
constexpr Long GhostParticleID = 549755813887L; // 2**39-1
constexpr Long VirtualParticleID = GhostParticleID - 1;
constexpr Long LastParticleID = GhostParticleID - 2;
constexpr Long DoSplitParticleID = GhostParticleID - 3;
constexpr Long NoSplitParticleID = GhostParticleID - 4;
constexpr Long InvalidParticleID = 16777216;
}

using namespace LongParticleIds;
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