Message 397241 - Python tracker

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Author	steven.daprano
Recipients	dechamps, steven.daprano, veky
Date	2021-07-10.06:36:57
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1625899018.01.0.13265273423.issue44595@roundup.psfhosted.org>
In-reply-to

Content
Not a bug, the result is correct. Python floats are binary floating point values, not decimal. 0.3368655's actual value is exactly: 0.336865499999999984392928809029399417340755462646484375 so when rounding to six decimal places, the seventh decimal place is a four, not five, and it rounds down to 0.336865. To be precise, it rounds down to: 0.336865000000000025526247782181599177420139312744140625

Not a bug, the result is correct.

Python floats are binary floating point values, not decimal. 0.3368655's actual value is exactly:

0.336865499999999984392928809029399417340755462646484375

so when rounding to six decimal places, the seventh decimal place is a four, not five, and it rounds down to 0.336865. To be precise, it rounds down to:

0.336865000000000025526247782181599177420139312744140625

History
Date	User	Action	Args
2021-07-10 06:36:58	steven.daprano	set	recipients: + steven.daprano, veky, dechamps
2021-07-10 06:36:58	steven.daprano	set	messageid: <1625899018.01.0.13265273423.issue44595@roundup.psfhosted.org>
2021-07-10 06:36:57	steven.daprano	link	issue44595 messages
2021-07-10 06:36:57	steven.daprano	create