Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.lang.c++ > #67774
| From | David Brown <david.brown@hesbynett.no> |
|---|---|
| Newsgroups | comp.lang.c++, comp.lang.c |
| Subject | Re: "C++: Size Matters in Platform Compatibility" |
| Date | 2019-08-19 08:43 +0200 |
| Organization | A noiseless patient Spider |
| Message-ID | <qjdge2$u7s$1@dont-email.me> (permalink) |
| References | <qj6ung$map$1@dont-email.me> <qj8u95$3if$1@dont-email.me> <mnkglelt8koldbugfin9q27eb3qptod8b5@4ax.com> <qjb9fj$mis$1@dont-email.me> <apbjlellues8gc3sicok1189p3krftan98@4ax.com> |
Cross-posted to 2 groups.
On 18/08/2019 22:10, Geoff wrote: > On Sun, 18 Aug 2019 12:32:18 +0200, David Brown > <david.brown@hesbynett.no> wrote: > >>> The UNIX epoch-based 64-bit time is good only if you believe the sun >>> will only last another 2.147 billion years. >> >> 292 billion years, by my counting. By that time, any issues with >> rollover will be an SEP¹. >> >>> > > Where are you getting that? time_t is the number of seconds since > January 1, 1970, 0:00 UTC and as a 64-bit integer that's not 292 > billion years. > time_t doesn't /have/ to be seconds since 1970, but it is a good choice for the type. 2 ^ 63 = 9.223372037×10¹⁸ seconds ans / 3600 = 2.562047788×10¹⁵ hours ans / 24 = 1.067519912×10¹⁴ days ans / 365.24 = 292279025208.905503028 years ans / 10⁹ = 292.279025208906 billion years
Back to comp.lang.c++ | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
"C++: Size Matters in Platform Compatibility" Lynn McGuire <lynnmcguire5@gmail.com> - 2019-08-16 14:04 -0500
Re: "C++: Size Matters in Platform Compatibility" Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-08-16 20:45 +0000
Re: "C++: Size Matters in Platform Compatibility" David Brown <david.brown@hesbynett.no> - 2019-08-17 15:08 +0200
Re: "C++: Size Matters in Platform Compatibility" Geoff <geoff@invalid.invalid> - 2019-08-17 12:43 -0700
Re: "C++: Size Matters in Platform Compatibility" David Brown <david.brown@hesbynett.no> - 2019-08-18 12:32 +0200
Re: "C++: Size Matters in Platform Compatibility" Geoff <geoff@invalid.invalid> - 2019-08-18 13:10 -0700
Re: "C++: Size Matters in Platform Compatibility" Bart <bc@freeuk.com> - 2019-08-18 21:15 +0100
Re: "C++: Size Matters in Platform Compatibility" Keith Thompson <kst-u@mib.org> - 2019-08-18 14:49 -0700
Re: "C++: Size Matters in Platform Compatibility" Keith Thompson <kst-u@mib.org> - 2019-08-18 14:51 -0700
Re: "C++: Size Matters in Platform Compatibility" David Brown <david.brown@hesbynett.no> - 2019-08-19 08:43 +0200
Re: "C++: Size Matters in Platform Compatibility" "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2019-08-19 09:15 +0200
Re: "C++: Size Matters in Platform Compatibility" Öö Tiib <ootiib@hot.ee> - 2019-08-19 01:07 -0700
Re: "C++: Size Matters in Platform Compatibility" Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-21 17:14 +0200
Re: "C++: Size Matters in Platform Compatibility" Eli the Bearded <*@eli.users.panix.com> - 2019-08-21 18:30 +0000
Re: "C++: Size Matters in Platform Compatibility" scott@slp53.sl.home (Scott Lurndal) - 2019-08-21 19:05 +0000
Re: "C++: Size Matters in Platform Compatibility" Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-21 21:25 +0200
Re: "C++: Size Matters in Platform Compatibility" Keith Thompson <kst-u@mib.org> - 2019-08-21 12:28 -0700
Re: "C++: Size Matters in Platform Compatibility" Richard Damon <Richard@Damon-Family.org> - 2019-08-22 22:58 -0400
Re: "C++: Size Matters in Platform Compatibility" Eli the Bearded <*@eli.users.panix.com> - 2019-08-23 19:15 +0000
Re: "C++: Size Matters in Platform Compatibility" Anton Shepelev <anton.txt@gmail.com> - 2019-08-18 15:59 +0300
Re: "C++: Size Matters in Platform Compatibility" David Brown <david.brown@hesbynett.no> - 2019-08-18 16:32 +0200
Re: "C++: Size Matters in Platform Compatibility" Juha Nieminen <nospam@thanks.invalid> - 2019-08-19 07:29 +0000
Re: "C++: Size Matters in Platform Compatibility" Paavo Helde <myfirstname@osa.pri.ee> - 2019-08-19 12:20 +0300
Re: "C++: Size Matters in Platform Compatibility" David Brown <david.brown@hesbynett.no> - 2019-08-19 11:22 +0200
Re: "C++: Size Matters in Platform Compatibility" Richard Damon <Richard@Damon-Family.org> - 2019-08-23 14:14 -0400
Re: "C++: Size Matters in Platform Compatibility" David Brown <david.brown@hesbynett.no> - 2019-08-24 20:56 +0200
Re: "C++: Size Matters in Platform Compatibility" Robert Wessel <robertwessel2@yahoo.com> - 2019-08-24 23:43 -0500
Re: "C++: Size Matters in Platform Compatibility" David Brown <david.brown@hesbynett.no> - 2019-08-25 12:11 +0200
Re: "C++: Size Matters in Platform Compatibility" Richard Damon <Richard@Damon-Family.org> - 2019-08-25 07:33 -0700
Re: "C++: Size Matters in Platform Compatibility" David Brown <david.brown@hesbynett.no> - 2019-08-25 20:27 +0200
Re: "C++: Size Matters in Platform Compatibility" Robert Wessel <robertwessel2@yahoo.com> - 2019-08-25 10:22 -0500
Re: "C++: Size Matters in Platform Compatibility" Lynn McGuire <lynnmcguire5@gmail.com> - 2019-08-19 15:05 -0500
Re: "C++: Size Matters in Platform Compatibility" scott@slp53.sl.home (Scott Lurndal) - 2019-08-19 20:17 +0000
Re: "C++: Size Matters in Platform Compatibility" David Brown <david.brown@hesbynett.no> - 2019-08-20 08:21 +0200
Re: "C++: Size Matters in Platform Compatibility" Lynn McGuire <lynnmcguire5@gmail.com> - 2019-08-20 14:38 -0500
Re: "C++: Size Matters in Platform Compatibility" James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-21 09:15 -0400
Re: "C++: Size Matters in Platform Compatibility" Anton Shepelev <anton.txt@gmail.com> - 2019-08-18 15:20 +0300
Re: "C++: Size Matters in Platform Compatibility" Ben Bacarisse <ben.usenet@bsb.me.uk> - 2019-08-18 14:50 +0100
csiph-web