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67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
#ifndef GRID_QCD_CAYLEY_FERMION_H
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#define GRID_QCD_CAYLEY_FERMION_H
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namespace Grid {
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namespace QCD {
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class CayleyFermion5D : public WilsonFermion5D
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{
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public:
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// override multiply
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virtual RealD M (const LatticeFermion &in, LatticeFermion &out);
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virtual RealD Mdag (const LatticeFermion &in, LatticeFermion &out);
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// half checkerboard operations
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virtual void Meooe (const LatticeFermion &in, LatticeFermion &out);
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virtual void MeooeDag (const LatticeFermion &in, LatticeFermion &out);
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virtual void Mooee (const LatticeFermion &in, LatticeFermion &out);
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virtual void MooeeDag (const LatticeFermion &in, LatticeFermion &out);
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virtual void MooeeInv (const LatticeFermion &in, LatticeFermion &out);
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virtual void MooeeInvDag (const LatticeFermion &in, LatticeFermion &out);
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virtual void Instantiatable(void)=0;
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// Efficient support for multigrid coarsening
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virtual void Mdir (const LatticeFermion &in, LatticeFermion &out,int dir,int disp);
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// protected:
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RealD mass;
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// Cayley form Moebius (tanh and zolotarev)
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std::vector<RealD> omega;
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std::vector<RealD> bs; // S dependent coeffs
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std::vector<RealD> cs;
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std::vector<RealD> as;
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// For preconditioning Cayley form
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std::vector<RealD> bee;
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std::vector<RealD> cee;
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std::vector<RealD> aee;
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std::vector<RealD> beo;
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std::vector<RealD> ceo;
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std::vector<RealD> aeo;
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// LDU factorisation of the eeoo matrix
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std::vector<RealD> lee;
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std::vector<RealD> leem;
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std::vector<RealD> uee;
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std::vector<RealD> ueem;
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std::vector<RealD> dee;
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// Constructors
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CayleyFermion5D(LatticeGaugeField &_Umu,
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GridCartesian &FiveDimGrid,
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GridRedBlackCartesian &FiveDimRedBlackGrid,
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GridCartesian &FourDimGrid,
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GridRedBlackCartesian &FourDimRedBlackGrid,
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RealD _mass,RealD _M5);
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protected:
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void SetCoefficientsZolotarev(RealD zolohi,Approx::zolotarev_data *zdata,RealD b,RealD c);
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void SetCoefficientsTanh(Approx::zolotarev_data *zdata,RealD b,RealD c);
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};
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}
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}
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#endif
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