Allright I sent this upstream to the devs of glibc http://sources.redhat.com/bugzilla/show_bug.cgi?id=3783
-- tan(double x) takes excessive amount of time when x is a multiple of pi/2, x != 0 https://launchpad.net/bugs/53312 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
