| Re: [eigen] Assertion failure doing matA.col(??).noalias() = matB.row(??) |
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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] Assertion failure doing matA.col(??).noalias() = matB.row(??)
- From: Gael Guennebaud <gael.guennebaud@xxxxxxxxx>
- Date: Thu, 2 Sep 2010 18:53:18 +0200
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ok thank you for spotting it. fix and unit test within a few minutes....
gael
On Thu, Sep 2, 2010 at 6:39 PM, Eamon Nerbonne <eamon.nerbonne@xxxxxxxxx> wrote:
> The following code fails with an assertion (on g++ & MSC)
>
> MatrixXd matA, matB;
>
> matA = MatrixXd::Random(12,15);
> matB.resize(matA.cols(),matA.rows());
> for(ptrdiff_t i=0;i<matA.rows();++i)
> matB.col(i).noalias() = matA.row(i); //<-- fails here!
> assert(matB.isApprox(matA.transpose());
>
>
> Without the .noalias, it succeeds. Is this by design? It's confusing, at
> least...
>
> --eamon@xxxxxxxxxxxx - Tel#:+31-6-15142163
>