Found duplicate bug report in glibc bug tracker: https://sourceware.org/bugzilla/show_bug.cgi?id=29193 This is fixed in glibc 2.36
** Bug watch added: Sourceware.org Bugzilla #29193 https://sourceware.org/bugzilla/show_bug.cgi?id=29193 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2076653 Title: sincos does not give same values as separate sin and cos To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/2076653/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs