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CLN/PERF: simplify tslib.get_time_micros #18389

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Merged
merged 7 commits into from
Nov 24, 2017
Merged

CLN/PERF: simplify tslib.get_time_micros #18389

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fd8718b
simplify get_time_micros
jbrockmendel Nov 20, 2017
e7c85bd
rewrite inaccurate docstring
jbrockmendel Nov 20, 2017
d0af109
use py2-friendly syntax
jbrockmendel Nov 20, 2017
deb32f0
Merge branch 'master' of https://github.com/pandas-dev/pandas into ts…
jbrockmendel Nov 22, 2017
21cff31
Merge branch 'master' of https://github.com/pandas-dev/pandas into ts…
jbrockmendel Nov 23, 2017
b711569
move get_time_micros to tslibs.fields; update imports
jbrockmendel Nov 23, 2017
26ec1f3
Merge branch 'master' of https://github.com/pandas-dev/pandas into ts…
jbrockmendel Nov 24, 2017
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simplify get_time_micros
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@jbrockmendel
jbrockmendel committed Nov 20, 2017
commit fd8718b837cd8d590728a919fbac077d0402ef79
10 changes: 1 addition & 9 deletions pandas/_libs/tslib.pyx
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Expand Up @@ -1704,17 +1704,9 @@ def get_time_micros(ndarray[int64_t] dtindex):
Datetime as int64 representation to a structured array of fields
"""
cdef:
Py_ssize_t i, n = len(dtindex)
pandas_datetimestruct dts
ndarray[int64_t] micros

micros = np.empty(n, dtype=np.int64)

for i in range(n):
dt64_to_dtstruct(dtindex[i], &dts)
micros[i] = 1000000LL * (dts.hour * 60 * 60 +
60 * dts.min + dts.sec) + dts.us

micros = np.mod(dtindex, 86_400_000_000_000, dtype=np.int64) // 1000LL
return micros


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