On 2011-09-04 16:52, Rick T wrote: ...
I've been able to find instructions on how to create a hello world C-external but not one that creates a simple sine wave from a sinewave equation like A*sin(w*t+p) (https://secure.wikimedia.org/wikipedia/en/wiki/Sine_wave) Does anyone have one or know where to find one.
The canonical reference is here: http://iem.at/pd/externals-HOWTO/node6.html You just need to plug your equation into the perform routine. Also check the source for osc~ in d_osc.c of the Pd source, which uses a fancy 32-bit float cosine table scanning method that was useful when it mattered but is getting obsolete as a call to sin() is probably just as fast nowadays.
Martin