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Date: Fri, 23 Mar 2012 07:53:30 +0000 (UTC)
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Subject: [jira] [Commented] (MATH-770) SymmLQ not tested in SymmLQTest
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    [ https://issues.apache.org/jira/browse/MATH-770?page=3Dcom.atlassian.j=
ira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D132364=
38#comment-13236438 ]=20

S=C3=A9bastien Brisard commented on MATH-770:
----------------------------------------

Test corrected in {{r1304216}}. Failure was due to the fact that in {{SymmL=
Q}}, the residual for the preconditioned system is really {{P * r}}, where =
{{r =3D b - A * x}}, and {{P}} is the square root of the preconditioner.
               =20
> SymmLQ not tested in SymmLQTest
> -------------------------------
>
>                 Key: MATH-770
>                 URL: https://issues.apache.org/jira/browse/MATH-770
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 3.0, 3.1
>            Reporter: S=C3=A9bastien Brisard
>            Assignee: S=C3=A9bastien Brisard
>              Labels: linear, solver
>             Fix For: 3.1
>
>
> In {{SymmLQTest}}, two test actually create instances of {{ConjugateGradi=
ent}} instead of {{SymmLQ}}. These tests are
> * {{testUnpreconditionedNormOfResidual()}}
> * {{testPreconditionedNormOfResidual()}}.

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