Message 236636 - Python tracker

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Author	夏熙临
Recipients	夏熙临
Date	2015-02-26.00:23:35
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1424910215.48.0.703419414911.issue23523@psf.upfronthosting.co.za>
In-reply-to

Content
When I was using cmath.atanh, I found that this function generates wrong output. For example: >>> import cmath >>> cmath.atanh(-1.89) (-0.5888951591901462+1.5707963267948966j) However, the correct output should be: (-0.5888951591901462-1.5707963267948966j) Clearly, the sign of the imaginary part is wrong.

When I was using cmath.atanh, I found that this function generates wrong output.

For example:

>>> import cmath
>>> cmath.atanh(-1.89)
(-0.5888951591901462+1.5707963267948966j)

However, the correct output should be:
(-0.5888951591901462-1.5707963267948966j)

Clearly, the sign of the imaginary part is wrong.

History
Date	User	Action	Args
2015-02-26 00:23:35	夏熙临	set	recipients: + 夏熙临
2015-02-26 00:23:35	夏熙临	set	messageid: <1424910215.48.0.703419414911.issue23523@psf.upfronthosting.co.za>
2015-02-26 00:23:35	夏熙临	link	issue23523 messages
2015-02-26 00:23:35	夏熙临	create