Message 362330 - Python tracker

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Author	Kostis Gourgoulias
Recipients	Kostis Gourgoulias, ned.deily, ronaldoussoren
Date	2020-02-20.16:25:55
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1582215956.02.0.936078092318.issue39703@roundup.psfhosted.org>
In-reply-to

Content
This was brought to my attention by a colleague, Albert B. When considering the floor division // operator, 1//0.01 should return 100.0, but instead returns 99.0. My understanding is that this is because 0.01 is represented by Decimal('0.01000000000000000020816681711721685132943093776702880859375') which is greater than 0.01. math.floor(1/0.01) correctly outputs 100. Shouldn't the two approaches provide the same answer?

This was brought to my attention by a colleague, Albert B.

When considering the floor division // operator, 1//0.01 should return 100.0, but instead returns 99.0. My understanding is that this is because 0.01 is represented by 

Decimal('0.01000000000000000020816681711721685132943093776702880859375')

which is greater than 0.01.

math.floor(1/0.01) correctly outputs 100. Shouldn't the two approaches provide the same answer?

History
Date	User	Action	Args
2020-02-20 16:25:56	Kostis Gourgoulias	set	recipients: + Kostis Gourgoulias, ronaldoussoren, ned.deily
2020-02-20 16:25:56	Kostis Gourgoulias	set	messageid: <1582215956.02.0.936078092318.issue39703@roundup.psfhosted.org>
2020-02-20 16:25:55	Kostis Gourgoulias	link	issue39703 messages
2020-02-20 16:25:55	Kostis Gourgoulias	create