From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from concorde.inria.fr (concorde.inria.fr [192.93.2.39]) by yquem.inria.fr (Postfix) with ESMTP id EE5B6BB91 for ; Fri, 24 Dec 2004 12:14:47 +0100 (CET) Received: from bernache.ens-lyon.fr (bernache.ens-lyon.fr [140.77.167.10]) by concorde.inria.fr (8.13.0/8.13.0) with ESMTP id iBOBEljd007094 for ; Fri, 24 Dec 2004 12:14:47 +0100 Received: by bernache.ens-lyon.fr (Postfix, from userid 103) id 5031E7ABD46; Fri, 24 Dec 2004 12:14:47 +0100 (CET) Received: from bryan.is-a-geek.org (unknown [84.97.241.29]) (using TLSv1 with cipher EDH-RSA-DES-CBC3-SHA (168/168 bits)) (Client did not present a certificate) by bernache.ens-lyon.fr (Postfix) with ESMTP id D08FC7ABD45 for ; Fri, 24 Dec 2004 12:14:45 +0100 (CET) Received: by bryan.is-a-geek.org (Postfix, from userid 1000) id BFEB1933C3; Fri, 24 Dec 2004 12:14:45 +0100 (CET) Date: Fri, 24 Dec 2004 12:14:45 +0100 From: Julien Cristau To: caml-list@yquem.inria.fr Subject: Re: [Caml-list] .- Message-ID: <20041224111445.GA1679@ens-lyon.fr> References: <20041224100422.GA10012@ermine.home> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20041224100422.GA10012@ermine.home> X-Operating-System: Linux 2.6.8.1 i686 Organization: =?iso-8859-1?Q?=C9cole_Normale_Sup=E9rieur?= =?iso-8859-1?Q?e?= de Lyon User-Agent: Mutt/1.5.6+20040907i X-Miltered: at concorde with ID 41CBFA27.001 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Spam: no; 0.00; ens-lyon:01 caml-list:01 wrote:01 printf:01 printf:01 mli:01 unix:01 unix:01 curr:01 curr:01 argument:01 diff:01 diff:01 let:03 let:03 X-Spam-Checker-Version: SpamAssassin 3.0.0 (2004-09-13) on yquem.inria.fr X-Spam-Status: No, score=0.0 required=5.0 tests=none autolearn=disabled version=3.0.0 X-Spam-Level: On 24/12/2004-11:10, Anastasia Gornostaeva wrote: > Hello. > > open Unix > > let _ = > let curr_time = time () in > let curr_tm = gmtime curr_time in > let new_time, _ = mktime {curr_tm with tm_hour = curr_tm.tm_hour+1} in > let diff = new_time -. curr_time in > Printf.printf "%f\n%f\n%f\n" > curr_time > new_time > diff > > > gives an negative result -7200.000000. Why? > Probably because Unix.mktime's argument is interpreted in the local time zone (as explained in unix.mli). You probably want to call Unix.localtime instead of Unix.gmtime. HTH, Julien