Rockbox mail archiveSubject: arrays & pointers
arrays & pointers
From: BlueChip <cs_bluechip_at_webtribe.net>
Date: Mon, 03 Jan 2005 20:34:57 +0000
Just saw this go in...
using a pointer instead of array dereferencing saves ~250 bytes
From my work on the card games library ...I discovered that arrays are
probably THE most expensive thing for our compiler. If you are going to
reference an element in array even just twice, it is memory efficient to
create a pointer to that element and use the pointer instead.
Given the _excessive_ efficiency of it, I guess it is also faster as well!
If you're going to access the pointer several times, you might even like to
stick a "register" in front of it for extra speed :)
Received on 2005-01-03