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Re: [Help-gsl] General CBLAS question

From: Brian Gough
Subject: Re: [Help-gsl] General CBLAS question
Date: Sat, 11 Sep 2010 08:54:50 +0100
User-agent: Wanderlust/2.15.6 (Almost Unreal) Emacs/23.2 Mule/6.0 (HANACHIRUSATO)

At Thu, 09 Sep 2010 15:01:38 -0500,
Rodney Sparapani wrote:
> I looked for this in the GSL docs, but maybe it is too basic.
> I also looked at the source, but I must be missing something.
> Anyways, many CBLAS functions calculate something like
> y = a A x + b y.  I need (and have tried) the following which
> seems to work: y = 1 A y + 0 y.  Is that OK or will you run
> into trouble somehow.  

It's ok and I think the code actually has specific tests for special
cases like b=0 to make them more efficient.

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