On Wed, Mar 17, 2010 at 11:29:00AM +0100, Vincent Lefevre wrote: > On 2010-03-07 16:17:08 +0100, Aurelien Jarno wrote: > > On amd64, only sincos has an optimized version, > > It may be optimized, but completely buggy. For instance, on 1e22, > sincos returns 0.46261304076460174617 for the sine instead of > -0.85220084976718879499 (correctly rounded value). Even the sign > is incorrect! >
Where did you get this result? In my tests both the x87 FPU and the current glibc code give the following result when using double variables and the sincos() function: sin (1e22) = 0.46261304076460174617 cos (1e22) = -0.88656030506363692201 -- Aurelien Jarno GPG: 1024D/F1BCDB73 aurel...@aurel32.net http://www.aurel32.net -- 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/20100321151449.gb11...@hall.aurel32.net
