http://bugs.winehq.org/show_bug.cgi?id=14609
--- Comment #1 from Andrew andrew@nelless.net 2008-07-23 08:11:09 --- Created an attachment (id=15005) --> (http://bugs.winehq.org/attachment.cgi?id=15005) Test case.
Attached is a example/test case.
All credit goes to my friend David, he tested it on Dev-C++ MingW on Windows XP. The function was lifted from WINE 1.1.1. Output on his machine is at the bottom. As expected the Y and Z components of the vector are skewed.