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prange: do not create a separate prange that covers the same space as its original range; return original range instead

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This commit is contained in:
Christian Zimmermann 2025-01-27 16:45:05 -08:00
parent 8b2efdc522
commit 9bdce8b085
1 changed files with 6 additions and 1 deletions
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7
src/include/ranges/prange.cc.h
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@ -405,7 +405,12 @@ namespace CNORXZ
template <class RangeT> template <class RangeT>
RangePtr prange(const Sptr<RangeT>& range, const Vector<SizeT>& parts) RangePtr prange(const Sptr<RangeT>& range, const Vector<SizeT>& parts)
{ {
return PRangeFactory<RangeT>(range,parts).create(); if(parts.size() == range->size()){
return range; // avoid PRange that is identical to its original range
}
else {
return PRangeFactory<RangeT>(range,parts).create();
}
} }
} }