Message 99445 - Python tracker

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In-reply-to
Author	ddicato
Recipients	ddicato, georg.brandl
Date	2010年02月16日.22:41:38
SpamBayes Score	3.2123884e-05
Marked as misclassified	No
Message-id	<1266360101.13.0.863363643677.issue7947@psf.upfronthosting.co.za>

Content
The standard library documentation for the math module states "All functions return a quiet NaN if at least one of the args is NaN." However, there are some exceptions to this rule, including: math.pow(1.0, float('nan')) == 1.0 math.hypot(float('inf'), float('nan')) == float('inf') abs(complex(float('nan'), float('inf'))) == float('inf') The docs should be updated to reflect that such corner cases exist.

Content

The standard library documentation for the math module states "All functions return a quiet NaN if at least one of the args is NaN." However, there are some exceptions to this rule, including:
math.pow(1.0, float('nan')) == 1.0
math.hypot(float('inf'), float('nan')) == float('inf')
abs(complex(float('nan'), float('inf'))) == float('inf')
The docs should be updated to reflect that such corner cases exist.

History
Date	User	Action	Args
2010年02月16日 22:41:41	ddicato	set	recipients: + ddicato, georg.brandl
2010年02月16日 22:41:41	ddicato	set	messageid: <1266360101.13.0.863363643677.issue7947@psf.upfronthosting.co.za>
2010年02月16日 22:41:39	ddicato	link	issue7947 messages
2010年02月16日 22:41:39	ddicato	create

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