What do you mean sinf/cosf is supposed to be twice faster ? You're mentionning calling it with bound values ?
Thank you. Jerome On Monday 08 March 2010, Aurelien Jarno wrote: > On Mon, Mar 08, 2010 at 12:17:41AM +0100, Jerome Vizcaino wrote: > > Ok about the patches : there had to be a reason for those not to be > > merged upstream. > > Also I think they have never been submitted upstream. They are from > 2002... > > > Some of my co-workers noticed the performance improvement when binding > > values between -pi and pi but the thing is, this kind of trick do not > > need to be applied when on 32 bits systems... Libm's behavior is not > > really arch-proof in terms of performance which is a bit confusing (and I > > would expect 64 bit being better than 32 bits when dealing with maths... > > :( > > cosf/sinf is actually twice faster on 64-bit than on 32-bit in normal > cases, but can be a lot slower in the cases that concern you. > > > Have you tried pushing your code upstream ? Maybe this would be useful > > for future versions. > > It's currently not clean enough to be send upstream. I'll try to send it > upstream, but I don't have to much hope. > -- To UNSUBSCRIBE, email to debian-glibc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/201003080927.08652.vizcaino_jer...@yahoo.fr
