http://bugs.winehq.org/show_bug.cgi?id=17200
--- Comment #6 from Artem S. Tashkinov t.artem@mailcity.com 2010-06-16 05:28:59 --- Created an attachment (id=28881) --> (http://bugs.winehq.org/attachment.cgi?id=28881) ssemath library under zlib license
If cosf and sinf functions are to be blamed, then GCC option -ffast-math should have helped but here in my case I see zero difference between msvcrt library compiled with usual CFlags and -ffast-math option.
Probably Wine developers could have used SSE2 implementation of some functions (namely sin, cos, log and exp) which is available here http://gruntthepeon.free.fr/ssemath/ under zlib license.