[R] Matrix Multiplication

[Liaw, Andy]

You have/can get the source, no?  I believe the answer is in
R-1.7.1/src/main/array.c.  Looks like it depends on what BLAS you have or
don't have.

Andy

> -----Original Message-----
> From: Paul, David A [mailto:paulda at BATTELLE.ORG] 
> Sent: Thursday, July 17, 2003 7:14 PM
> To: 'r-help at stat.math.ethz.ch'
> Subject: [R] Matrix Multiplication
> 
> 
> R1.7.1/Win2k:
> 
> Apologies if this posts twice - the first message
> was not in plain text.
> 
> I have looked in help.start() and tried typing
> "crossprod" and "%*%" into the RGui to get an idea 
> for what R is using as internal algorithms for 
> its matrix computations/manipulations... to no 
> avail.
> 
> Could someone point me in the direction of some
> documentation?  All I get for "crossprod" is
> 
> 	function (x, y = NULL) 
> 	.Internal(crossprod(x, y))
> 	<environment: namespace:base>
> 
> Much thanks in advance,
> 	david paul
> 
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