Re: [eigen] problem with selfadjointView |

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*To*: eigen@xxxxxxxxxxxxxxxxxxx*Subject*: Re: [eigen] problem with selfadjointView*From*: Ben Goodrich <bgokgm@xxxxxxxxxxxxxx>*Date*: Sun, 22 Aug 2010 12:00:30 -0400*Dkim-signature*: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type :content-transfer-encoding; bh=D+tT8F1zYqp1p3lytPQrLtxyVrs8wHWyCR6FGlUOz0I=; b=oPAWkWpEWsO5eFI9iMro5R9XmcmziD2H+soMU9Hz4upSMc/cSs9m5dza/6ah6ExOc7 PCZdIBN1aET+xQNE3fu4c5AycqcRl2xTEe0BAL1yHeSOdQDhd9StkHVNHQP6z8H6Aqy5 hDxRuiBYVBub3/3Qn6jwGA3olevzwSlU/xQD4=*Domainkey-signature*: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; b=ZbjZN8CaXK04DpGnlhB1yrYwAFBcZFl4EbPhE+3ntxR6uCGglw9eBZxy17JICDvoF3 0PeOuhK3C6bwqcvLeZmcATFEsrX2SpE4WViyhG6YCUL+FoTHbOmyn4j9ZPfDh3srCuMP mesVz64D9c7/LqYy2bkRPS9OCzeai3eHuxpV0=

On Sun, Aug 22, 2010 at 11:28 AM, Benoit Jacob <jacob.benoit.1@xxxxxxxxx> wrote: > > > 2010/8/22 Ben Goodrich <bgokgm@xxxxxxxxxxxxxx> >> >> On Sun, Aug 22, 2010 at 7:39 AM, Jitse Niesen <jitse@xxxxxxxxxxxxxxxxx> >> wrote: >> > On Sat, 21 Aug 2010, Ben Goodrich wrote: >> > >> >> Thanks for implementing that. Is there something special needed to >> >> make it work with templates? I would have expected >> >> >> >> template <typename Derived> >> >> void bar(const MatrixBase<Derived> &x, const MatrixBase<Derived> &A, >> >> MatrixBase<Derived> &z) { >> >> z = x.transpose() * A.selfadjointView<Lower>() * x; >> >> } >> >> >> >> to work now, but the compiler throws an expected primary-expression >> >> error. >> > >> > Perhaps you need to add the 'template' keyword, as in: >> > >> > z = x.transpose() * A.template selfadjointView<Lower>() * x; >> > >> > Warning: I did not try it out. >> > >> > >> > Jitse >> >> I had tried that yesterday but forgot to mention it. It doesn't work >> for me, but maybe the .template() trick should be mentioned somewhere >> in the documentation? > > I confirm what Jitse says, but since it's a general C++ syntax quirk, it's > hard for us to document it everywhere where needed. > > Can you paste the whole compiler error that you're getting? > > Benoit Aha! What Jitse says does, in fact, work for me. I was incorrectly using template() and g++ was telling me benchmark.cc:6: error: expected primary-expression before ‘)’ token which was the same cryptic compiler error that it was giving me when I was just doing z = x.transpose() * A.selfadjointView<Lower>() * x; so I incorrectly assumed that it wasn't making any difference. Thanks, Ben

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**Re: [eigen] problem with selfadjointView***From:*Gael Guennebaud

**Re: [eigen] problem with selfadjointView***From:*Gael Guennebaud

**Re: [eigen] problem with selfadjointView***From:*Ben Goodrich

**Re: [eigen] problem with selfadjointView***From:*Jitse Niesen

**Re: [eigen] problem with selfadjointView***From:*Ben Goodrich

**Re: [eigen] problem with selfadjointView***From:*Benoit Jacob

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