Date: Tue, 21 Jan 1997 11:04:02 +0100 (MET)
From: Jan Hubicka <hubicka AT ta DOT jcu DOT cz>
To: djgpp AT delorie DOT com
Subject: vertical line copying
Message-ID: <Pine.LNX.3.91.970121105955.17981A-100000@tabor.ta.jcu.cz>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII

Hi
I profiled XaoS and about 14% of time is spent by copying one vertical line
to another(horizontal lines are done using memcpy so they are much faster)
So I asking for your best tips how to unroll such loop. Current ugly 
version is:
for(; vbuff<vend ; vbuff+=scanline, vsrc+= scanline) *vbuff=*vsrc;
some onrolling? or handling vsrc as distance from vbuff(should be done 
using addressing) or some other tips?

BTW someone interested in working on XaoS?

Honza

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