(In reply to John Wilkinson from comment #9) > I have also come across a very similar issue on i7 Intel platforms, please > see bug 16531. Calls to cos can take around 0.15 ms, 1000 times their normal > time, which is a serious problem for the real-time system we are developing.
The default libm functions never guarantee constant runtime. You will have this same problem for many of the functions provided by the library. However we are working on enhancing libm to include something like what you're looking for. Please have look at and comment: https://sourceware.org/glibc/wiki/libm -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/192134 Title: slow math sin function for some values on amd64 To manage notifications about this bug go to: https://bugs.launchpad.net/glibc/+bug/192134/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
