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From: Mathias Kende <mathias@kende.fr>
To: Jianzhou Zhao <jianzhou@seas.upenn.edu>
Cc: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] OCaml Int64 <-> C int64_t
Date: Wed, 18 Aug 2010 20:47:52 +0200	[thread overview]
Message-ID: <1282157272.10419.5.camel@mathias-ens> (raw)
In-Reply-To: <AANLkTikaXvDotspy_cMg=8_GaR=6GOur7UYXu3B=yFve@mail.gmail.com>

Le mercredi 18 août 2010 à 14:16 -0400, Jianzhou Zhao a écrit :
> Does caml_copy_int64 do all I want?

I believe so, but then I don't know what you want...

> 
> int64_t C_fun();
> 
> CAMLprim value stub()
> {
>   return (caml_copy_int64 (C_fun()));
> }
> 
> Do we still need I64_of_intnat? It is not included in <caml/alloc.h>
> or other headers.

INT64_of_intnat is an internal macro. There is no reason to use it. Your
snippet of code seems correct, but remember that caml_copy_int64 will
allocate values in the heap so you need to use the CAMLparam/CAMLreturn
macro if your function receives arguments from the caml world.


      reply	other threads:[~2010-08-18 18:47 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-18 17:28 Jianzhou Zhao
2010-08-18 17:36 ` [Caml-list] " Mathias Kende
2010-08-18 18:16   ` Jianzhou Zhao
2010-08-18 18:47     ` Mathias Kende [this message]

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