On 2010-02-17 15:33:48 +0100, Cedric Roux wrote: > well I posted some 32b assembly code a few messages ago that give > different results for "fcos" with the angle of Christoph when run > on ADM or intel CPUs. > So no gcc, no libm, no libc, no lib at all in fact, in the loop. > Just raw CPUs. No, in my tests, I was using the cos() function from glibc, which is *not* implemented by the fcos instruction of the processor, but by a software algorithm from IBM. Note: IIRC, these tests are several years old, I haven't tried with a recent glibc. -- Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <http://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / Arénaire project (LIP, ENS-Lyon)
