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Re: [Help-gsl] General CBLAS question

From: Rodney Sparapani
Subject: Re: [Help-gsl] General CBLAS question
Date: Fri, 10 Sep 2010 14:06:31 -0500
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On 09/ 9/10 03:25 PM, Benjamin Blumer wrote:
Hi Rodney,

That's just the way you do it.


On 10-09-09 04:01 PM, 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.  Any pointers welcome.  Thanks

I suppose this is not a FAQ.  But, does anyone else think this is
sufficiently non-obvious enough to document?  I don't have much
experience with using BLAS/CBLAS; hence my question.  Would enough
other people have the same naive question to make a doc change

Rodney Sparapani       Center for Patient Care and Outcomes Research
Sr. Biostatistician     
4 wheels good, 2 wheels better!   Medical College of Wisconsin (MCW)
WWLD?:  What Would Lombardi Do?   Milwaukee, WI, USA

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