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Re: [Caml-list] interfacing C with Ocaml (beginner questions)
- Damien Doligez
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| Date: | -- (:) |
| From: | Damien Doligez <Damien.Doligez@i...> |
| Subject: | Re: [Caml-list] interfacing C with Ocaml (beginner questions) |
>From: francois bereux <francois.bereux@fr.thalesgroup.com>
>I found a Double_val macro, but no Val_double. What is the solution ?
You must use copy_double (which will do the allocation) because
floating-point values are boxed in O'Caml.
>value add(value x, value y)
>{
> CAMLparam2(x,y);
> return Val_int(Int_val(x)+Int_val(y));
>}
This is wrong. You must use CAMLreturn.
-- Damien
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