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Add ET support for Lattice spin- and colour-traces #488

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Add ET support for Lattice spin- and colour-traces #488

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18 changes: 18 additions & 0 deletions Grid/qcd/QCD.h
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Original file line number Diff line number Diff line change
Expand Up @@ -596,16 +596,32 @@ template<int Index,class vobj> inline vobj transposeColour(const vobj &lhs){
//////////////////////////////////////////
// Trace lattice and non-lattice
//////////////////////////////////////////
#define GRID_UNOP(name) name
#define GRID_DEF_UNOP(op, name) \
template <typename T1, typename std::enable_if<is_lattice<T1>::value||is_lattice_expr<T1>::value,T1>::type * = nullptr> \
inline auto op(const T1 &arg) ->decltype(LatticeUnaryExpression<GRID_UNOP(name),T1>(GRID_UNOP(name)(), arg)) \
{ \
return LatticeUnaryExpression<GRID_UNOP(name),T1>(GRID_UNOP(name)(), arg); \
}

template<int Index,class vobj>
inline auto traceSpin(const Lattice<vobj> &lhs) -> Lattice<decltype(traceIndex<SpinIndex>(vobj()))>
{
return traceIndex<SpinIndex>(lhs);
}

GridUnopClass(UnaryTraceSpin, traceIndex<SpinIndex>(a));
GRID_DEF_UNOP(traceSpin, UnaryTraceSpin);

template<int Index,class vobj>
inline auto traceColour(const Lattice<vobj> &lhs) -> Lattice<decltype(traceIndex<ColourIndex>(vobj()))>
{
return traceIndex<ColourIndex>(lhs);
}

GridUnopClass(UnaryTraceColour, traceIndex<ColourIndex>(a));
GRID_DEF_UNOP(traceColour, UnaryTraceColour);

template<int Index,class vobj>
inline auto traceSpin(const vobj &lhs) -> Lattice<decltype(traceIndex<SpinIndex>(lhs))>
{
Expand All @@ -617,6 +633,8 @@ inline auto traceColour(const vobj &lhs) -> Lattice<decltype(traceIndex<ColourIn
return traceIndex<ColourIndex>(lhs);
}

#undef GRID_UNOP
#undef GRID_DEF_UNOP
//////////////////////////////////////////
// Current types
//////////////////////////////////////////
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