[PD] arguments not passed to an external

Alexandros Drymonitis adrcki at gmail.com
Tue May 27 10:00:07 CEST 2014

> The parameters are passed on the stack, so if it's a little-endian machine
> the first two bytes will be the same for a short as for an int.
> (Big-endians would think argc was zero). The problem arises when the
> called routine looks for the first argv which it expects to find right
> after the short argc on the stack. The caller put a four-byte int there so
> the next two bytes will be zero and all the pointers to the argvs will be
> wrong.

Since my laptop's processor is an Intel Core 2, it's a little edian one,
right? How can I make my code versatile so that it can compile on either
little or big endian machines? I'm reading Pd's source code ([phasor~]'s
code, for example) but it's beyond my understanding. I kind of understand
the beginning of d_osc.c where the code will try to determine the endianess
of the machine, but when it comes to sorting arguments out depending on the
endianess, I'm at loss.
Another important question I still have is, how do I determine whether
there is a signal coming in the object's inlets, so I know whether to use
the values passed via arguments, or the vectors passed from the dsp method.
I'm asking the same thing over and over again...I'll stop for now.

> Martin
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