[PD] efficient cos calculation in externals?

[Larry Troxler]

I think the answer is no, but is there a globaly available efficient cosine 
routine in Pd?

I see that the 512 byte cosine table used by "cos~" is exported in m_pd.h, but 
this size is too small to use without interpolation, and the intperpolation 
method used by cos~ seems a bit tricky and isn't made globaly available.

A quick grep through the externals shows that some people just call the 
functions in math.h, and others build their own lookup tables. Is this the 
case?

Larry Troxler