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Author serhiy.storchaka
Recipients mark.dickinson, serhiy.storchaka, zach.ware
Date 2020-05-28.17:27:56
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <1590686876.93.0.758851621751.issue40801@roundup.psfhosted.org>
In-reply-to
Content 
The problem with the roundtrip PyFloat_FromDouble(PyFloat_AsDouble(obj)) is that (in contrary to PyNumber_Index()) it is lossy. Converting Decimal, Fraction, float128 to float before using it in expression can lead to loss of precision.

So such conversion looks to me less useful than operator.index().
History
Date User Action Args
2020-05-28 17:27:56serhiy.storchakasetrecipients: + serhiy.storchaka, mark.dickinson, zach.ware
2020-05-28 17:27:56serhiy.storchakasetmessageid: <1590686876.93.0.758851621751.issue40801@roundup.psfhosted.org>
2020-05-28 17:27:56serhiy.storchakalinkissue40801 messages
2020-05-28 17:27:56serhiy.storchakacreate