On Sun, Oct 25, 2015 at 10:16:41AM +0100, Emre Hasegeli wrote: > > Currently PostgreSQL only has trigonometric functions that work in > > radians. I think it would be quite useful to have an equivalent set of > > functions that worked in degrees. In other environments these are > > commonly spelled sind(), cosd(), etc. > > I would prefer gradian over degree.
We can have both, but degree is a good bit better known, which means more users will care about it. People have gone a long way toward dealing with problems like the known correspondence (90° = π/2, etc.) and periodicity (f(x) = f(x+360*n) for integer n, f in (sin, cos, tan, cot, sec, csc), for example). I haven't yet found same in a PostgreSQL-compatible library, though. Cheers, David. -- David Fetter <da...@fetter.org> http://fetter.org/ Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter Skype: davidfetter XMPP: david.fet...@gmail.com Remember to vote! Consider donating to Postgres: http://www.postgresql.org/about/donate -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
