[issue10596] modulo operator bug

Mark Dickinson added the comment: Raymond: just curious---why do you ask? Did this fix break something? -- ___ Python tracker ___ __

[issue10596] modulo operator bug

Tim Peters added the comment: Raymond, Mark pointed to the footnote explaining the first result. As to the second, Kahan tried his best, but I'm afraid nobody can make me care about the sign bit on a zero ;-) Whatever Mark thought best is fine by me. --

[issue10596] modulo operator bug

Raymond Hettinger added the comment: Uncle Timmy, was this the right thing to do? -- assignee: mark.dickinson -> tim_one nosy: +rhettinger, tim_one ___ Python tracker ___ __

[issue10596] modulo operator bug

Сергей Хлутчин added the comment: Yes i agree, the first example is the result of rounding error, as well as here: >>> 4.0-2.22044604925e-16==4.0 True -- ___ Python tracker ___

[issue10596] modulo operator bug

Mark Dickinson added the comment: Backported to 3.1 (after one botched backport attempt) and 2.7 in r87037 and r87033. -- status: open -> closed ___ Python tracker ___

[issue10596] modulo operator bug

Mark Dickinson added the comment: Fixed the sign of the zero (in py3k) in r87032. I'll backport to 2.7 and 3.1, then close this. Sergio, is that acceptable? You still haven't said what results you were expecting for these operations. -- resolution: -> fixed stage: -> committed/re

[issue10596] modulo operator bug

Mark Dickinson added the comment: Did you look at the second footnote on that page? -- ___ Python tracker ___ ___ Python-bugs-list ma

[issue10596] modulo operator bug

Сергей Хлутчин added the comment: >From the documetation: The modulo operator always yields a result with the same sign as its second operand (or zero); the absolute value of the result is strictly smaller than the absolute value of the second operand. --

[issue10596] modulo operator bug

Mark Dickinson added the comment: What results were you expecting here? Both those results look fine to me (though it's arguable that the second should be +0.0 rather than -0.0). -- assignee: -> mark.dickinson ___ Python tracker

[issue10596] modulo operator bug

Changes by Antoine Pitrou : -- nosy: +mark.dickinson ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: http://mai

[issue10596] modulo operator bug

New submission from Сергей Хлутчин : Result of the modulo operator is wrong: >>> (-2.22044604925e-16)%4 4.0 >>> (-4.0)%4 -0.0 -- messages: 122991 nosy: Sergio.Ĥlutĉin priority: normal severity: normal status: open title: modulo operator bug type: behavior versions: Python 2.6 _