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[Octave-bug-tracker] [bug #45507] acos returns different results on big
From: |
Mike Miller |
Subject: |
[Octave-bug-tracker] [bug #45507] acos returns different results on big input values |
Date: |
Mon, 13 Jun 2016 23:36:33 +0000 (UTC) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:47.0) Gecko/20100101 Firefox/47.0 |
Follow-up Comment #26, bug #45507 (project octave):
Hmm, I get this ("ans" lines removed):
acos
0.000 + 19.114i 0.000 + 19.114i
3.142 - 19.114i 3.142 + 19.114i
1.571 - 19.114i 1.571 - 19.114i
1.571 + 19.114i 1.571 + 19.114i
0.785 - 19.460i 0.785 - 19.460i
0.785 + 19.460i 0.785 + 19.460i
2.356 - 19.460i 2.356 - 19.460i
2.356 + 19.460i 2.356 + 19.460i
This looks correct except for one case, so as before, I just need some hint
from someone who understands what should be done about the imaginary part to
make the result Matlab compatible.
>> acos (-1e8)
ans = 3.1416 + 19.1138i
According to Marco's test script this should be conjugated, or should not have
been conjugated.
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- [Octave-bug-tracker] [bug #45507] acos returns different results on big input values,
Mike Miller <=
- [Octave-bug-tracker] [bug #45507] acos returns different results on big input values, Marco Caliari, 2016/06/14
- [Octave-bug-tracker] [bug #45507] acos returns different results on big input values, Mike Miller, 2016/06/14
- [Octave-bug-tracker] [bug #45507] acos returns different results on big input values, Marco Caliari, 2016/06/14
- [Octave-bug-tracker] [bug #45507] acos returns different results on big input values, Lachlan Andrew, 2016/06/14
- [Octave-bug-tracker] [bug #45507] acos returns different results on big input values, Mike Miller, 2016/06/14
- [Octave-bug-tracker] [bug #45507] acos returns different results on big input values, Mike Miller, 2016/06/17
- [Octave-bug-tracker] [bug #45507] acos returns different results on big input values on gcc 4.8, Lachlan Andrew, 2016/06/22
- [Octave-bug-tracker] [bug #45507] acos returns different results on big input values on gcc 4.8, Mike Miller, 2016/06/22
- [Octave-bug-tracker] [bug #45507] acos returns different results on big input values on gcc 4.8, Lachlan Andrew, 2016/06/23
- [Octave-bug-tracker] [bug #45507] acos returns different results on big input values on gcc 4.8, Rik, 2016/06/23