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26 lines
901 B
C++
26 lines
901 B
C++
#ifndef QCD_UTILS_COVARIANT_CSHIFT_H
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#define QCD_UTILS_COVARIANT_CSHIFT_H
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namespace Grid {
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namespace QCD {
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////////////////////////////////////////////////////////////////////////
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// Low performance implementation of CovariantCshift API
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////////////////////////////////////////////////////////////////////////
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// Make these members of an Impl class for BC's.
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template<class covariant,class gauge> Lattice<covariant> CovShiftForward(const Lattice<gauge> &Link,
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int mu,
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const Lattice<covariant> &field)
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{
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return Link*Cshift(field,mu,1);// moves towards negative mu
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}
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template<class covariant,class gauge> Lattice<covariant> CovShiftBackward(const Lattice<gauge> &Link,
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int mu,
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const Lattice<covariant> &field)
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{
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Lattice<covariant> tmp(field._grid);
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tmp = adj(Link)*field;
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return Cshift(tmp,mu,-1);// moves towards positive mu
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}
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}}
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#endif
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