[R] DCT function?

[Red Roo]

Looking for the DCT function, but don't see it in the signal pkg.
http://rss.acs.unt.edu/Rdoc/library/signal/html/signal.package.html
http://rss.acs.unt.edu/Rdoc/library/signal/html/00Index.html

As I understand it, the 'signal' functions are ports of the corresponding matlab/octave code, where the DCT exists. Did I miss it (different name?) or is someone working on a port for 'signal'?

--RR