[SciPy-Dev] adding chkfinite flags to linalg functions

[Martin Teichmann]

Hi list,

I just got the idea of a very simple improvement of
asarray_chkfinite: instead of calling isfinite on the
array, call it on its sum. That's much faster as no
intermedite array has to be created. I got a significant
speed improvement by this, so that now
asarray_chkfinite does not take up a significant time
of the total running time of the linear algebra
routines.

I commited a pull request
https://github.com/numpy/numpy/pull/164

Greetings

Martin

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