diff options
| author | Julian Taylor <jtaylor.debian@googlemail.com> | 2014-05-26 21:43:40 +0200 |
|---|---|---|
| committer | Julian Taylor <jtaylor.debian@googlemail.com> | 2014-05-26 21:53:47 +0200 |
| commit | 25518e5833b1590f849e189941173563ef2548e1 (patch) | |
| tree | ce252ca02f951e3bf66c4441a0d5d95572a2cbe8 /numpy/lib/nanfunctions.py | |
| parent | e4dc0c9c0a094844e2db60685a59eebe9b6a2bbb (diff) | |
| download | numpy-25518e5833b1590f849e189941173563ef2548e1.tar.gz | |
ENH: improve VOID_compare performance
use small memory cache for the temporary data allocation in the compare
loop and use npy_is_aligned instead of the very expensive signed
division.
Improves unaligned compares which occur in structured arrays with
strings:
d = np.ones((2,10000), dtype=np.dtype([('f0', 'S5'), ('f1', '<i4')]))
%timeit np.argsort(d)
100 loops, best of 3: 8.6 ms per loop
vs before:
100 loops, best of 3: 23.7 ms per loop
Diffstat (limited to 'numpy/lib/nanfunctions.py')
0 files changed, 0 insertions, 0 deletions