Re: most portable way to compare file times

From	Bernd Paysan <bernd.paysan@gmx.de>
Newsgroups	comp.lang.forth
Subject	Re: most portable way to compare file times
Date	2011-11-19 00:57 +0100
Organization	1&1 Internet AG
Message-ID	<ja6rdv$vjd$1@online.de> (permalink)
References	(1 earlier) <bee639d3-e9d6-42ae-ae72-cc17c68a852e@cu3g2000vbb.googlegroups.com> <e049fd77-3b60-4f0a-b7ed-366df3b797b1@l24g2000yqm.googlegroups.com> <53e468dd-ed4e-4b1b-9e1a-738a065df9a5@p16g2000yqd.googlegroups.com> <ja6ak2$iqq$1@online.de> <p4idnWEyga4rVFvTnZ2dnUVZ_u6dnZ2d@supernews.com>

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Andrew Haley wrote:
> 64 bits, please!  There are many people alive now who will still be
> alive when 32 (signed) bits overflow, and a few who will still be
> alive when the unsigned number overflows.

I'm all for 64 bits (double number, i.e. 128 bits on a 64 bit system), 
but then microseconds, please.  All timing informations should be 
treated as cyclic numbers, i.e. you calculate deltas with -, and before 
or after depends on the sign; you don't compare with < or u<, you 
compare with - 0<.  I'm more worried that the 292471 years are too much 
to find all the bugs where the time is actually compared with < or u<, 
which it shouldn't ;-).

-- 
Bernd Paysan
"If you want it done right, you have to do it yourself"
http://bernd-paysan.de/

Thread

most portable way to compare file times Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-18 00:43 -0800
  Re: most portable way to compare file times Alex McDonald <blog@rivadpm.com> - 2011-11-18 02:33 -0800
    Re: most portable way to compare file times Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-18 05:26 -0800
      Re: most portable way to compare file times Alex McDonald <blog@rivadpm.com> - 2011-11-18 09:14 -0800
        Re: most portable way to compare file times Bernd Paysan <bernd.paysan@gmx.de> - 2011-11-18 20:10 +0100
          Re: most portable way to compare file times Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-11-18 15:10 -0600
            Re: most portable way to compare file times Alex McDonald <blog@rivadpm.com> - 2011-11-18 13:32 -0800
              Re: most portable way to compare file times anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2011-11-21 10:22 +0000
                Re: most portable way to compare file times BruceMcF <agila61@netscape.net> - 2011-11-21 08:51 -0800
            Re: most portable way to compare file times Bernd Paysan <bernd.paysan@gmx.de> - 2011-11-19 00:57 +0100
        Re: most portable way to compare file times Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-18 14:45 -0800
  Re: most portable way to compare file times "Rod Pemberton" <do_not_have@noavailemail.cmm> - 2011-11-18 05:44 -0500
    Re: most portable way to compare file times Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-18 05:31 -0800
      Re: most portable way to compare file times anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2011-11-18 16:22 +0000
        Re: most portable way to compare file times Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-19 13:59 -0800
          Re: most portable way to compare file times Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-20 02:06 -0800
            Re: most portable way to compare file times Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-20 02:44 -0800
              Re: most portable way to compare file times Bernd Paysan <bernd.paysan@gmx.de> - 2011-11-20 14:58 +0100
                Re: most portable way to compare file times Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-20 06:48 -0800
                Re: most portable way to compare file times BruceMcF <agila61@netscape.net> - 2011-11-20 08:05 -0800
                Re: most portable way to compare file times Coos Haak <chforth@hccnet.nl> - 2011-11-20 20:53 +0100
                Re: most portable way to compare file times Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-20 12:21 -0800
                Re: most portable way to compare file times Bernd Paysan <bernd.paysan@gmx.de> - 2011-11-21 21:03 +0100
                Re: most portable way to compare file times Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-21 17:32 -0800
                Re: most portable way to compare file times Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-21 17:45 -0800
                Re: most portable way to compare file times Bernd Paysan <bernd.paysan@gmx.de> - 2011-11-24 15:48 +0100
                Re: most portable way to compare file times BruceMcF <agila61@netscape.net> - 2011-11-24 09:34 -0800
                Re: most portable way to compare file times Alex McDonald <blog@rivadpm.com> - 2011-11-24 11:58 -0800
                Re: most portable way to compare file times BruceMcF <agila61@netscape.net> - 2011-11-24 17:25 -0800
                Re: most portable way to compare file times "Elizabeth D. Rather" <erather@forth.com> - 2011-11-24 20:56 -1000
                Re: most portable way to compare file times Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-11-25 04:15 -0600
                Re: most portable way to compare file times Alex McDonald <blog@rivadpm.com> - 2011-11-25 04:17 -0800
                Re: most portable way to compare file times Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-25 05:47 -0800
                Re: most portable way to compare file times Alex McDonald <blog@rivadpm.com> - 2011-11-25 08:58 -0800
                Re: most portable way to compare file times Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-25 11:43 -0800
                Re: most portable way to compare file times BruceMcF <agila61@netscape.net> - 2011-11-25 11:12 -0800
                Re: most portable way to compare file times Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-25 05:39 -0800
                Re: most portable way to compare file times anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2011-11-27 14:34 +0000
                Re: most portable way to compare file times BruceMcF <agila61@netscape.net> - 2011-11-27 08:46 -0800
                Re: most portable way to compare file times Alex McDonald <blog@rivadpm.com> - 2011-11-25 04:32 -0800
                Re: most portable way to compare file times Alex McDonald <blog@rivadpm.com> - 2011-11-25 04:51 -0800
                Re: most portable way to compare file times Bernd Paysan <bernd.paysan@gmx.de> - 2011-11-25 16:46 +0100
                Re: most portable way to compare file times BruceMcF <agila61@netscape.net> - 2011-11-25 08:33 -0800
                Re: most portable way to compare file times Bernd Paysan <bernd.paysan@gmx.de> - 2011-11-26 01:11 +0100
                Re: most portable way to compare file times BruceMcF <agila61@netscape.net> - 2011-11-26 12:18 -0800
                Re: most portable way to compare file times Bernd Paysan <bernd.paysan@gmx.de> - 2011-11-26 21:44 +0100
                Re: most portable way to compare file times BruceMcF <agila61@netscape.net> - 2011-11-26 13:18 -0800
                Re: most portable way to compare file times BruceMcF <agila61@netscape.net> - 2011-11-20 12:45 -0800
            Re: most portable way to compare file times Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-20 07:49 -0800
        Re: most portable way to compare file times mhx@iae.nl (Marcel Hendrix) - 2011-11-20 09:45 +0200
      Re: most portable way to compare file times BruceMcF <agila61@netscape.net> - 2011-11-18 10:42 -0800
  Re: most portable way to compare file times BruceMcF <agila61@netscape.net> - 2011-11-20 13:05 -0800

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