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Date: Tue, 16 Jun 2009 11:44:19 +0200 (CEST)
Message-Id: <20090616.114419.669093565955563034.Christophe.Troestler+ocaml@umons.ac.be>
To: christoph.bauer@lmsintl.com
Cc: OCaml Mailing List <caml-list@inria.fr>
Subject: Re: [Caml-list] C Interface and float record
From: Christophe TROESTLER <Christophe.Troestler+ocaml@umons.ac.be>
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X-Spam: no; 0.00; christophe:01 troestler:01 christophe:01 troestler:01 ocaml:01 0200,:01 alloc:01 alloc:01 wosize:01 2009:98 wrote:01 caml-list:01 caml:02 caml:02 external:03 

On Tue, 16 Jun 2009 10:40:31 +0200, Christoph Bauer wrote:
> 
> type t = {
>    f1 : float;
>    f2 : float;
>    f3 : float;
> }
> 
> and a external C-function should allocate this as for the result.
> 
> Do I have to use
> 
>    caml_alloc(6, Double_array_tag)

caml_alloc(3 * Double_wosize, Double_array_tag)

would be better (portable between 32 and 64 bits).

C.