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From: "chris.danx" <spamoff.danx@ntlworld.com>
Subject: Re: In place matrix multiplication?
Date: Sun, 01 Jun 2003 14:54:02 +0200
Date: 2003-06-01T14:54:02+02:00	[thread overview]
Message-ID: <BxnCa.16707$Mu3.366629@newsfep4-glfd.server.ntli.net> (raw)
In-Reply-To: <bbcg9c$7u9v9$2@ID-77047.news.dfncis.de>

Dmitry A. Kazakov wrote:
> Something like this, I presume:
> 

Thanks Dmitry.

I've simplified it by just using a floating point type, rather than an 
abstraction (the abstraction provided only additional complexity and 
little benefit otherwise).  Now I'm wondering if the cost of the more 
complex code is more expensive than doing an out of place multiplication 
followed by a copy back to the original array.  I guess that'd depend on 
the code and the compiler.  How do I find out which is cheaper in time 
for a given compiler (GNAT)?


Thanks Again,
Chris




  reply	other threads:[~2003-06-01 12:54 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-06-01  0:35 In place matrix multiplication? chris.danx
2003-06-01  9:18 ` Dmitry A. Kazakov
2003-06-01 12:54   ` chris.danx [this message]
2003-06-01 14:26     ` Bill Findlay

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