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Re: [Help-gsl] BLAS - identical source and destination arguments OK?


From: Brian Gough
Subject: Re: [Help-gsl] BLAS - identical source and destination arguments OK?
Date: Mon, 16 Feb 2009 17:02:30 +0000
User-agent: Wanderlust/2.14.0 (Africa) Emacs/22.2 Mule/5.0 (SAKAKI)

At Fri, 13 Feb 2009 22:08:08 +0100,
Philipp Klaus Krause wrote:
> 
> Will the following work a intended or will I have to create another
> gsl_vector for temporary storage?
> 
> gsl_blas_dgemv(CblasNoTrans, 1.0, data->eigenvectors, data->primary,
> 0.0, data->primary);

You will need to use a temporary vector.  Arguments to BLAS functions
must be independent -- this is true of BLAS in general, not just GSL.

-- 
Brian Gough

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