numpy/numpy — pull request #4740 by jaimefrio (2014-05-25 07:18:11+00:00)
Title: ENH: speed-up minimum, maximum and xor for bool dtype

Replaced the operations for the above ufuncs on bools, by simpler
single instructions.

On random inputs `np.minimum` and `np.maximum` run about 25% faster,
and `np.logical_xor` and `np.bitwise_xor` almost 3x faster.