[racket] Fun with the FFI

Try this (untested):

(_fun [a : _double]
      [b : _double]
      [c : (_ptr o _double)]
      [d : (_ptr o _double)]
      -> [result : _int]
      -> (list c d result))

You can change (list c d result) to return any value that refers to the
a, b, c, and d bindings you just made.

Pierpaolo Bernardi <olopierpa at gmail.com> writes:
> Hello all,
>
> Can someone show me what's the correct FFI type for this C function:
>
> int foo(double a, double b, double *c, double *d)
>
> where c and d are output only parameters, and I want back *c, *d, and
> the int return value.
>
> Thanks!
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