[PD-dev] using rand() in an external

[Greg Surges]

Excellent, worked like a charm. I had an uninitialized outlet pointer.
*grin*

Thanks much for the gdb tip, I'm certain it will come in handy often.

-Greg



On Sun, Mar 16, 2008 at 8:31 PM, Hans-Christoph Steiner <hans at eds.org>
wrote:

>
> Crashes are usually because memory hasn't been allocated properly.  I'd
> check x->current and x->step.  Hooking up to gdb will give you a lot more
> info.  Search puredata.info for 'gdb' for a little howto.
>
> .hc
>
> On Mar 16, 2008, at 7:42 PM, Greg Surges wrote:
>
> Hi all,
>
> The following code crashes Pd when the randomwalk object receives a
> bang...
> I'm stuck as to why, can anyone see a reason?
> void randomwalk_bang(t_randomwalk *x)
> {
>     t_float randval = rand() % 2;
>     if(randval == 0) randval = -1;
>     if(randval == 1) randval = 1;
>     x->current += (x->step * randval);
>     outlet_float(x->f_out, x->current);
> }
>
> Thanks in advance,
>
> -Greg
>
> --
> http://www.uwm.edu/~gssurges/ <http://www.uwm.edu/%7Egssurges/>
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