Serhiy Storchaka added the comment: copysign() is part of the standard C maths library (that is why it was added to the math module).
sgn/sign/signum was used in old languages that didn't have copysign() (Basic, Pascal, etc). ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue27739> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
