Message 399909 - Python tracker

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Author	pgimeno
Recipients	pgimeno
Date	2021-08-19.11:34:02
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1629372842.45.0.638068158675.issue44954@roundup.psfhosted.org>
In-reply-to

Content
>>> float.fromhex('0x0.8p-1074') 0.0 >>> float.fromhex('0x.8p-1074') 5e-324 One of them is obviously wrong. It's the second one, because: - The smallest denormal is 0x1p-1074 - Therefore, 0x0.8p-1074 is a tie for rounding purposes. - The digit in the last place is even because the number is zero, and there is a tie, which implies rounding down.

>>> float.fromhex('0x0.8p-1074')
0.0
>>> float.fromhex('0x.8p-1074')
5e-324

One of them is obviously wrong. It's the second one, because:
- The smallest denormal is 0x1p-1074
- Therefore, 0x0.8p-1074 is a tie for rounding purposes.
- The digit in the last place is even because the number is zero, and there is a tie, which implies rounding down.

History
Date	User	Action	Args
2021-08-19 11:34:02	pgimeno	set	recipients: + pgimeno
2021-08-19 11:34:02	pgimeno	set	messageid: <1629372842.45.0.638068158675.issue44954@roundup.psfhosted.org>
2021-08-19 11:34:02	pgimeno	link	issue44954 messages
2021-08-19 11:34:02	pgimeno	create