Message 68719 - Python tracker

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Author	mark.dickinson
Recipients	MrJean1, mark.dickinson
Date	2008-06-25.09:05:52
SpamBayes Score	0.012620807
Marked as misclassified	No
Message-id	<1214384754.77.0.24413070303.issue3167@psf.upfronthosting.co.za>
In-reply-to

Content
Nice reply from zal. His conclusion: > The short answer to your question is to use the cc -xlibmieee > option (and not rely on errno in the case of log(-Inf)) if you > would like to see results in the spirit of IEEE 754. It sounds like using the -xlibmieee flag is the way to go. (math_1 is already doing an excellent job of not relying on errno). Could you try compiling with this flag to see whether it fixes the problem? (Opening up the 'configure' file and adding the flag to BASECFLAGS might be the easiest way to do this; there may be easier ways.) If it does, I'll cook up a configure patch.

Nice reply from zal.  His conclusion:

> The short answer to your question is to use the cc -xlibmieee
> option (and not rely on errno in the case of log(-Inf)) if you
> would like to see results in the spirit of IEEE 754.

It sounds like using the -xlibmieee flag is the way to go.  (math_1 is 
already doing an excellent job of not relying on errno).

Could you try compiling with this flag to see whether it fixes the 
problem?  (Opening up the 'configure' file and adding the flag to 
BASECFLAGS might be the easiest way to do this; there may be easier 
ways.) If it does, I'll cook up a configure patch.

History
Date	User	Action	Args
2008-06-25 09:05:55	mark.dickinson	set	spambayes_score: 0.0126208 -> 0.012620807 recipients: + mark.dickinson, MrJean1
2008-06-25 09:05:54	mark.dickinson	set	spambayes_score: 0.0126208 -> 0.0126208 messageid: <1214384754.77.0.24413070303.issue3167@psf.upfronthosting.co.za>
2008-06-25 09:05:52	mark.dickinson	link	issue3167 messages
2008-06-25 09:05:52	mark.dickinson	create