GNU Octave - Bugs: bug #49036, realpow: produced complex result

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bug #49036: realpow: produced complex result

Submitter:	Guillaume <gyom>
Submitted:	Fri 09 Sep 2016 09:21:20 AM UTC


Category:	Test Suite	Severity:	3 - Normal
Priority:	5 - Normal	Item Group:	Regression
Status:	None	Assigned to:	None
Originator Name:	Guillaume	Open/Closed: *	Closed
Release: *	dev	Operating System: *	GNU/Linux
Fixed Release:	None	Planned Release:	None

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Sat 10 Sep 2016 10:06:53 AM UTC, comment #3: Closed as duplicate	Avinoam Kalma <avinoam>
Fri 09 Sep 2016 06:34:27 PM UTC, comment #2: Thanks - I had somehow missed the earlier bug reports. I use gcc 4.8.3. It can be marked as duplicate of bug #47775.	Guillaume <gyom>
Fri 09 Sep 2016 04:27:12 PM UTC, comment #1: I believe this has been seen on Ubuntu 14.04 also. I think it is a limitation of older versions of either gcc or libm. I think it has been discussed before and decided not to change anything, just document it as a known failure with older runtimes. See bug #47775 and bug #48514. One of these bug numbers should be added to the %!test block.	Mike Miller <mtmiller>
Fri 09 Sep 2016 09:21:20 AM UTC, original submission: Running "make check" on latest dev version, there is a failed test with realpow: octave:1> test realpow ***** assert (realpow (1i,2), -1) !!!!! test failed realpow: produced complex result octave:2> realpow (1i,2) error: realpow: produced complex result error: called from realpow at line 36 column 5 octave:9> 1i.^2 ans = -1.0000e+00 + 1.2246e-16i It works as expected in the packaged version from the distribution (Octave 4.0.3 on OpenSUSE 13.2).	Guillaume <gyom>

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Depends on the following items

realpow and sparse-xpow.cc-tst fail with C++11 and gcc < 4.9.2 (bug #47775, Wont Fix)

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Date	Changed by	Updated Field	Previous Value	=>	Replaced by
2016-09-10	avinoam	Open/Closed	Open		Closed
2016-09-10	avinoam	Dependencies	-		Depends on bugs #47775

GNU Octave - Bugs: bug #49036, realpow: produced complex result

bug #49036: realpow: produced complex result

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