spades::particles::CompareParticle Struct Reference

Functor for comparing particles. More...

#include <ParticleOps.H>

Public Member Functions
template<class PArrs >
AMREX_GPU_DEVICE AMREX_FORCE_INLINE bool	operator() (const amrex::Long p1, const amrex::Long p2, PArrs &parrs) const
	Compare particles.

Detailed Description

Functor for comparing particles.

This is used to sort particles based on cell index, entity type, and timestamp (in that order).

Member Function Documentation

operator()()

template<class PArrs >

AMREX_GPU_DEVICE AMREX_FORCE_INLINE bool spades::particles::CompareParticle::operator() ( const amrex::Long p1, const amrex::Long p2, PArrs & parrs ) const

inline

Compare particles.

Parameters

p1	[in] first particle
p2	[in] second particle
parrs	[in] particle arrays

Returns

boolean of p1 < p2 based on criteria

    {
        // sort by iv, then particle type then by timestamp
        const amrex::IntVect piv1(AMREX_D_DECL(
            parrs.m_idata[CommonIntData::i][p1],
            parrs.m_idata[CommonIntData::j][p1],
            parrs.m_idata[CommonIntData::k][p1]));
        const amrex::IntVect piv2(AMREX_D_DECL(
            parrs.m_idata[CommonIntData::i][p2],
            parrs.m_idata[CommonIntData::j][p2],
            parrs.m_idata[CommonIntData::k][p2]));
 
        const auto m1 = parrs.m_idata[CommonIntData::type_id][p1];
        const auto m2 = parrs.m_idata[CommonIntData::type_id][p2];
        const auto t1 = parrs.m_rdata[CommonRealData::timestamp][p1];
        const auto t2 = parrs.m_rdata[CommonRealData::timestamp][p2];
        return (piv1 < piv2) ||
               (piv1 == piv2 && ((m1 < m2) || (m1 == m2 && t1 < t2)));
    }

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The documentation for this struct was generated from the following file:

• /home/runner/work/spades/spades/Source/ParticleOps.H