[Numpy-svn] [numpy/numpy] 61d7a1: ENH: improve PyArray_Nonzero for sparse bool masks

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/numpy/numpy
  Commit: 61d7a10b7d244e83413747a9f0772e5a50236dfa
      https://github.com/numpy/numpy/commit/61d7a10b7d244e83413747a9f0772e5a50236dfa
  Author: Julian Taylor <jtaylor.debian at googlemail.com>
  Date:   2014-03-09 (Sun, 09 Mar 2014)

  Changed paths:
    M numpy/core/src/multiarray/item_selection.c
    M numpy/core/tests/test_numeric.py

  Log Message:
  -----------
  ENH: improve PyArray_Nonzero for sparse bool masks

we already count the number of true elements so we can decide when its
sparse and use faster (4-byte) vectorized npy_memchr.


  Commit: 2766776c30f87183b5a33b1a3a5772ee3834cd21
      https://github.com/numpy/numpy/commit/2766776c30f87183b5a33b1a3a5772ee3834cd21
  Author: Charles Harris <charlesr.harris at gmail.com>
  Date:   2014-03-09 (Sun, 09 Mar 2014)

  Changed paths:
    M numpy/core/src/multiarray/item_selection.c
    M numpy/core/tests/test_numeric.py

  Log Message:
  -----------
  Merge pull request #4370 from juliantaylor/where-improve

ENH: improve PyArray_Nonzero for sparse bool masks


Compare: https://github.com/numpy/numpy/compare/4da29a8e7393...2766776c30f8