bugGNU Octave - Bugs: bug #29637, hess returns wrong result

 
 

bug #29637: hess returns wrong result

Submitted by:  Stephen Montgomery-Smith <stephenms>
Submitted on:  Thu 22 Apr 2010 01:56:05 AM UTC  
 
Category: NoneSeverity: 3 - Normal
Priority: 5 - NormalItem Group: Incorrect Result
Status: FixedAssigned to: None
Originator Name: Stephen Montgomery-SmithOpen/Closed: Closed
Release: 3.2.4Operating System: BSD

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Thu 22 Apr 2010 08:40:06 PM UTC, comment #1:

Fixed and checked in as revision 8db807a0eb78 in the Mercurial source tree.

Thanks for catching this.

Rik <rik5>
Project Administrator
Thu 22 Apr 2010 01:56:05 AM UTC, original submission:

If A is a square matrix, hess(A) returns the wrong result. According to "help hess" it should return the matrix converted to upper Hessenberg form. But actually it returns the orthogonal matrix used to transform to upper Hessenberg form.

For example:
A=rand(3)
hess(A)

gives P when it should give H. The command "[P H]=hess(A)" does work fine.

This should be really easy for you guys to fix.

Stephen Montgomery-Smith <stephenms>

 

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    Follow 2 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Thu 22 Apr 2010 08:40:06 PM UTCrik5StatusNone=>Fixed
      Open/ClosedOpen=>Closed

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