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[Octave-bug-tracker] [bug #45587] rem(-0, 1) returns 0 instead of -0
From: |
Charles Karney |
Subject: |
[Octave-bug-tracker] [bug #45587] rem(-0, 1) returns 0 instead of -0 |
Date: |
Tue, 21 Jul 2015 18:09:25 +0000 |
User-agent: |
Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:39.0) Gecko/20100101 Firefox/39.0 |
Follow-up Comment #7, bug #45587 (project octave):
I don't think MATLAB treats "second arg = 1" as a special case. For
example
atan2d(rem(-0,360),-1) -> -180
Here are the other cases you asked for...
atan2d(rem(-0, 0), -1) -> NaN
atan2d(rem(-0, -0), -1) -> NaN
atan2d(rem([-0 0], [0 0]), [-1 -1]) -> NaN NaN
atan2d(rem([-0 0], [1 1]), [-1 -1]) -> -180 180
atan2d(rem(4, -0), -1) -> NaN
atan2d(rem(-4, -0), -1) -> NaN
atan2d(rem(4, 1), -1) -> 180
atan2d(rem(-4, 1), -1) -> -180
I believe that this behavior mimics that of the C++ function std::fmod.
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- [Octave-bug-tracker] [bug #45587] rem(-0, 1) returns 0 instead of -0, Charles Karney, 2015/07/20
- [Octave-bug-tracker] [bug #45587] rem(-0, 1) returns 0 instead of -0, Rik, 2015/07/21
- [Octave-bug-tracker] [bug #45587] rem(-0, 1) returns 0 instead of -0, Charles Karney, 2015/07/21
- [Octave-bug-tracker] [bug #45587] rem(-0, 1) returns 0 instead of -0, Rik, 2015/07/21
- [Octave-bug-tracker] [bug #45587] rem(-0, 1) returns 0 instead of -0, Michael Godfrey, 2015/07/21
- [Octave-bug-tracker] [bug #45587] rem(-0, 1) returns 0 instead of -0, Rik, 2015/07/21
- [Octave-bug-tracker] [bug #45587] rem(-0, 1) returns 0 instead of -0, Michael Godfrey, 2015/07/21
- [Octave-bug-tracker] [bug #45587] rem(-0, 1) returns 0 instead of -0,
Charles Karney <=
- [Octave-bug-tracker] [bug #45587] rem(-0, 1) returns 0 instead of -0, Michael Godfrey, 2015/07/21
- [Octave-bug-tracker] [bug #45587] rem(-0, 1) returns 0 instead of -0, Charles Karney, 2015/07/21
- [Octave-bug-tracker] [bug #45587] rem(-0, 1) returns 0 instead of -0, Rik, 2015/07/21
- [Octave-bug-tracker] [bug #45587] rem(-0, 1) returns 0 instead of -0, Michael Godfrey, 2015/07/22
- [Octave-bug-tracker] [bug #45587] rem(-0, 1) returns 0 instead of -0, Rik, 2015/07/22