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| From: | Rik |
| Subject: | [Octave-bug-tracker] [bug #44286] acosh (-10i) returns different phase from Matlab |
| Date: | Tue, 17 Feb 2015 17:21:30 +0000 |
| User-agent: | Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1) |
URL:
<http://savannah.gnu.org/bugs/?44286>
Summary: acosh (-10i) returns different phase from Matlab
Project: GNU Octave
Submitted by: rik5
Submitted on: Tue 17 Feb 2015 09:21:29 AM PST
Category: Octave Function
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Matlab Compatibility
Status: None
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: dev
Operating System: GNU/Linux
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Details:
The phase of the acosh function appears to be opposite that of both Matlab and
Wolfram Alpha.
Matlab 2014a:
>> acosh (10i)
ans =
2.9982 + 1.5708i
>> acosh (-10i)
ans =
2.9982 - 1.5708i octave: ans = -2.9982 + 1.5708i
The phase is correct for positive arguments of acosh.
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<http://savannah.gnu.org/bugs/?44286>
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