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PERF: groupsort_indexer contiguity #42031

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Merged
merged 6 commits into from
Jul 28, 2021
Merged

PERF: groupsort_indexer contiguity #42031

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4e12371
Groupsort indexer contiguity
mzeitlin11 Jun 15, 2021
962d938
fixup
mzeitlin11 Jun 15, 2021
98ee034
Merge remote-tracking branch 'upstream/master' into groupsort_indexer
mzeitlin11 Jun 18, 2021
94b9a33
Merge remote-tracking branch 'upstream/master' into groupsort_indexer
mzeitlin11 Jul 12, 2021
2c7d752
Merge master
mzeitlin11 Jul 12, 2021
9b1121d
Merge remote-tracking branch 'upstream/master' into groupsort_indexer
mzeitlin11 Jul 18, 2021
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6 changes: 3 additions & 3 deletions pandas/_libs/algos.pyx
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Original file line number Diff line number Diff line change
Expand Up @@ -217,8 +217,8 @@ def groupsort_indexer(const intp_t[:] index, Py_ssize_t ngroups):
This is a reverse of the label factorization process.
"""
cdef:
Py_ssize_t i, loc, label, n
ndarray[intp_t] indexer, where, counts
Py_ssize_t i, label, n
intp_t[::1] indexer, where, counts

counts = np.zeros(ngroups + 1, dtype=np.intp)
n = len(index)
Expand All @@ -241,7 +241,7 @@ def groupsort_indexer(const intp_t[:] index, Py_ssize_t ngroups):
indexer[where[label]] = i
where[label] += 1

return indexer, counts
return indexer.base, counts.base


cdef inline Py_ssize_t swap(numeric *a, numeric *b) nogil:
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