Rockbox.org home
release
dev builds
extras
themes manual
wiki
device status forums
mailing lists
IRC bugs
patches
dev guide



Rockbox mail archive

Subject: RE: Optimized bitswap

RE: Optimized bitswap

From: Benoit Midy <bmidy_at_guddland.lu>
Date: Mon, 05 Mar 2001 17:03:06 +0000 (BST)

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi Linus,

I did not folloow the complete track of the bitswap modification could you shortly
explains what is the imporvement, what part is concernec , and where the influence will
be observed .

Thanks

On Tue, 20 Aug 2002 16:23:32 +0200, Nielsen Linus (ext) wrote:

>I just tried it, and it wasn't entirely correct.
>
>It swapped from start+2 thru start+len*2 inclusive, when it should swap from
>start thru start+len*2-2.
>
>I took the liberty of correcting your (really good) code and made the loop
>go forward in memory. And i also committed it to the CVS.
>
>And guess what? It seems to be even FASTER than the 16-bit version! :-)
>
>Nice work, Magnus!
>
>/Linus
>

Benoit Midy
Guddland Digital S.A.
Luxembourg
Tel: (352) 50 35 21 / 360
mailto:bmidy_at_guddland.lu
http://www.guddland.lu

- -----BEGIN PGP PUBLIC KEY BLOCK-----
Version: PGPfreeware 5.0i OS/2 for non-commercial use
Comment: PGP 5.0 for OS/2
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=gwEj
- -----END PGP PUBLIC KEY BLOCK-----

PGP Public Key Fingerprint= 0738 A5F3 C24E 9EAC 21F5 40BE 6B92 5C74 8E33 FD5D

-----BEGIN PGP SIGNATURE-----
Version: PGPfreeware 5.0i OS/2 for non-commercial use
Comment: PGP 5.0 for OS/2
Charset: cp850

wj8DBQE6o8bKa5JcdI4z/V0RAu3QAJwK6mW60ViALaMqAWoQ4rsXuu1J0gCfX/YO
1hX20VC6ZPeBOyNTtLIiFP8=
=M0gs
-----END PGP SIGNATURE-----
Received on 2002-08-20

Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy