[python-win32] What is the meaning of -1. #IND?

Tim Roberts timr at probo.com
Mon May 4 20:02:24 CEST 2009


Echavarria Gregory, Maria Angelica wrote:
> Good morning group. I have a concern related to a result shown as -1#IND in my interpreter (blue letters, not red warnings) that I am getting after a bunch of numpy code and I do not really know the meaning. Can you please help me with WHAT DOES -#IND MEAN? could it be related to previous -#INF or NaN that may emerge during the calculations before the final result?
>   

Absolutely.  -1#IND means "negative indefinite".  Indefinite is one of
the special values defined in IEEE 754.  Dividing by zero gives infinity
(1#INF), but dividing 0 by 0 results in "indefinite" because it has no
defined meaning.

-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.



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