[Python-bugs-list] [ python-Bugs-823209 ] cmath.log doesn't have the same interface as math.log.

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Bugs item #823209, was opened at 2003-10-13 23:23
Message generated for change (Comment added) made by gaul
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Category: Python Library
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Jeremy Fincher (jemfinch)
Assigned to: Martin v. Löwis (loewis)
Summary: cmath.log doesn't have the same interface as math.log.

Initial Comment:
Somewhere along the way, math.log gained an optional
"base" argument.  cmath.log is still missing it.

>>> print math.log.__doc__
log(x[, base]) -> the logarithm of x to the given base.
If the base not specified, returns the natural
logarithm (base e) of x.

>>> print cmath.log.__doc__
log(x)

Return the natural logarithm of x.

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Comment By: Andrew Gaul (gaul)
Date: 2003-10-27 14:20

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Base 2 logarithms are somewhat common.

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Comment By: Raymond Hettinger (rhettinger)
Date: 2003-10-27 13:44

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I can fix this if necessary.

My question is whether it should be done.  On the one hand,
it is nice to have the two interfaces as symmetrical as
possible.  OTOH,  I'm not aware of any use cases for log(z, b).



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Comment By: Andrew Gaul (gaul)
Date: 2003-10-18 13:42

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See patch #826074 for a fix.

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