From: Vik Heyndrickx <Vik DOT Heyndrickx AT rug DOT ac DOT be>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: 32bit memcpy function?
Date: Mon, 24 Nov 1997 09:47:56 +0100
Organization: University of Ghent, Belgium
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Message-ID: <34793F3C.298F@rug.ac.be>
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Speed wrote:
> Eli Zaretskii wrote:
> > On Sat, 22 Nov 1997 wolfman AT cedar DOT alberni DOT net wrote:
> > > I was wondering if DJGPP has a 32bit memcpy function (memcpy uses
> > > 8bit right?)
> > Wrong.  `memcpy' in DJGPP uses 32-bit move instructions.

> So it is equivalent to a 'rep movsl'? (assuming, of course, the source,
> dest, and count are already set)

Even more. 'memcpy' is a compiler built-in function, hence additional
optimizations can be performed. So it is even possible it is faster than
'rep; movsl' on a particular machine!

-- 
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