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Created on 2021-08-13 18:26 by afw2alan, last changed 2022-04-11 14:59 by admin. This issue is now closed.
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| msg399550 - (view) | Author: A wilson (afw2alan) | Date: 2021-08-13 18:26 | |
0.01 + 273.15 should equal 273.16 but in python 3.9.5 or earlier report as 273.15999999999997. |
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| msg399561 - (view) | Author: Eric V. Smith (eric.smith) *  |
Date: 2021-08-13 20:52 | |
This a limitation of the floating point type that python uses. See https://docs.python.org/3/tutorial/floatingpoint.html |
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| msg399564 - (view) | Author: A wilson (afw2alan) | Date: 2021-08-13 21:18 | |
Eric, I was unaware of this document and its implementation in python. where 0.01+0.15 = 0.16 but 0.01+273.15=273.15999999999997 the latter which should be 273.16 which is triple point temperature of water in Kelvin. This floating point variance explains some if the conditional test failures I have encountered. regards Alan Get Outlook for Android<https://aka.ms/ghei36> ________________________________ From: report=bugs.python.org@roundup.psfhosted.org <report=bugs.python.org@roundup.psfhosted.org> on behalf of Eric V. Smith <report@bugs.python.org> Sent: Friday, 13 August 2021, 21:52 To: afw2alan@outlook.com Subject: [issue44910] Floating point issue Eric V. Smith <eric@trueblade.com> added the comment: This a limitation of the floating point type that python uses. See https://docs.python.org/3/tutorial/floatingpoint.html ---------- nosy: +eric.smith resolution: -> not a bug stage: -> resolved status: open -> closed _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue44910> _______________________________________ |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:48 | admin | set | github: 89073 |
| 2021-08-13 21:18:38 | afw2alan | set | messages: + msg399564 |
| 2021-08-13 20:52:31 | eric.smith | set | status: open -> closed nosy: + eric.smith messages: + msg399561 resolution: not a bug stage: resolved |
| 2021-08-13 18:26:29 | afw2alan | create | |