[Python-Dev] math.hypot, complex.abs, and documentation (original) (raw)

David DiCato ddicato at microsoft.com
Tue Feb 16 23:42:39 CET 2010

Ok, thanks! It's submitted as issue 7947.

-----Original Message----- From: Mark Dickinson [mailto:dickinsm at gmail.com] Sent: Tuesday, February 16, 2010 2:15 PM To: David DiCato Cc: python-dev at python.org Subject: Re: [Python-Dev] math.hypot, complex.abs, and documentation

On Tue, Feb 16, 2010 at 9:19 PM, David DiCato <ddicato at microsoft.com> wrote:

I have a minor concern about certain corner cases with math.hypot and complex.abs, namely when one component is infinite and one is not a number.

as well, and FWIW, I personally agree with this convention. However, the math module’s documentation for both 2.6 and 3.1 states, “All functions return a quiet NaN if at least one of the args is NaN.”

Yes; this is a doc bug. Please could you open an issue on http://bugs.python.org ?

math.pow(1.0, nan) is another such exception to the rule. Perhaps the documentation should be updated to reflect this.

Yes, it should. Thanks!

Mark

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