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Re: Big integers

From jacob navia <jacob@jacob.remcomp.fr>
Newsgroups comp.lang.c
Subject Re: Big integers
Date 2018-12-04 23:45 +0100
Organization lccwin
Message-ID <pu7031$1d82$1@gioia.aioe.org> (permalink)
References <YfuND.286973$lKb.275890@fx15.am4> <01c809d8-12f2-4755-8207-a000f1d6c9c1@googlegroups.com> <%VyND.512769$p%6.229167@fx26.am4>

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Le 04/12/2018 à 18:35, Bart a écrit :> An extended precision floating 
point library would also be intriguing to
 > write. But it can't be arbitrary precision. (How many digits to
 > represent 1/3 exactly in either binary or decimal?)
I have written one, based on the work of Stephen L Moshier, in x86 asm 
and arm64 asm. It has aroud the same speed as GMP...
The layout is as follows:

Each number is 64 bytes, where the first 32 are the sign (I know is 
wasteful but it is faster than using only one bit) the, the next 32 are 
the exponent (biased) and then 7 64 bit integers with the mantissa.

All functions of the C standard library are provided using this format

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Big integers Bart <bc@freeuk.com> - 2018-12-04 12:17 +0000
  Re: Big integers fir <profesor.fir@gmail.com> - 2018-12-04 05:58 -0800
    Re: Big integers Chad <cdalten@gmail.com> - 2018-12-04 08:22 -0800
      Re: Big integers Bart <bc@freeuk.com> - 2018-12-04 17:04 +0000
        Re: Big integers scott@slp53.sl.home (Scott Lurndal) - 2018-12-04 17:19 +0000
  Re: Big integers Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-12-04 08:38 -0800
    Re: Big integers Bart <bc@freeuk.com> - 2018-12-04 17:35 +0000
      Re: Big integers Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-12-04 18:13 +0000
        Re: Big integers "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2018-12-04 10:50 -0800
        Re: Big integers Rosario19 <Ros@invalid.invalid> - 2018-12-06 17:56 +0100
      Re: Big integers Thiago Adams <thiago.adams@gmail.com> - 2018-12-04 10:22 -0800
        Re: Big integers Eli the Bearded <*@eli.users.panix.com> - 2018-12-04 18:58 +0000
          Re: Big integers Thiago Adams <thiago.adams@gmail.com> - 2018-12-04 11:32 -0800
            Re: Big integers Eli the Bearded <*@eli.users.panix.com> - 2018-12-04 22:45 +0000
              Re: Big integers jameskuyper@alumni.caltech.edu - 2018-12-04 14:57 -0800
          Re: Big integers jameskuyper@alumni.caltech.edu - 2018-12-04 12:14 -0800
          Re: Big integers chris.m.thomasson.1@gmail.com - 2018-12-04 16:58 -0800
            Re: Big integers Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-12-05 03:14 +0000
              Re: Big integers "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-12-05 14:27 -0800
            Re: Big integers Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2018-12-04 20:03 -0500
              Re: Big integers "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-12-05 14:25 -0800
      Re: Big integers jacob navia <jacob@jacob.remcomp.fr> - 2018-12-04 23:45 +0100
        Re: Big integers Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-12-04 23:29 +0000
        Re: Big integers Bart <bc@freeuk.com> - 2018-12-05 00:30 +0000
          Re: Big integers "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-12-05 14:28 -0800
        Re: Big integers Jens Stuckelberger <Jens_Stuckelberger@nowhere.net> - 2018-12-05 17:50 +0000
          Re: Big integers jacobnavia <jacob@jacob.remcomp.fr> - 2018-12-05 20:03 +0100
        Re: Big integers Keith Thompson <kst-u@mib.org> - 2018-12-05 13:46 -0800
          Re: Big integers jacobnavia <jacob@jacob.remcomp.fr> - 2018-12-06 06:41 +0100
            Re: Big integers Keith Thompson <kst-u@mib.org> - 2018-12-05 22:40 -0800
  Re: Big integers "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2018-12-04 09:08 -0800
    Re: Big integers Bart <bc@freeuk.com> - 2018-12-04 19:41 +0000
      Re: Big integers "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2018-12-04 12:00 -0800
    Re: Big integers Bart <bc@freeuk.com> - 2018-12-08 11:28 +0000
  Re: Big integers Ian Collins <ian-news@hotmail.com> - 2018-12-05 15:19 +1300
    Re: Big integers Bart <bc@freeuk.com> - 2018-12-05 11:58 +0000
      Re: Big integers David Brown <david.brown@hesbynett.no> - 2018-12-05 14:35 +0100
        Re: Big integers Bart <bc@freeuk.com> - 2018-12-05 14:35 +0000
          Re: Big integers Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-12-05 07:39 -0800
            Re: Big integers Thiago Adams <thiago.adams@gmail.com> - 2018-12-05 07:45 -0800
              Re: Big integers Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-12-05 17:51 +0000
                Re: Big integers David Brown <david.brown@hesbynett.no> - 2018-12-05 22:19 +0100
              Re: Big integers "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-12-05 14:55 -0800
                Re: Big integers jameskuyper@alumni.caltech.edu - 2018-12-05 15:19 -0800
                Re: Big integers "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-12-05 16:13 -0800
                Re: Big integers David Brown <david.brown@hesbynett.no> - 2018-12-06 09:35 +0100
                Re: Big integers "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-12-07 14:26 -0800
                Re: Big integers "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-12-07 19:56 -0800
                Re: Big integers James Kuyper <jameskuyper@alumni.caltech.edu> - 2018-12-09 12:01 -0500
                Re: Big integers "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-12-10 14:47 -0800
                Re: Big integers scott@slp53.sl.home (Scott Lurndal) - 2018-12-11 00:50 +0000
                Re: Big integers "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-12-10 17:37 -0800
                Re: Big integers "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-12-14 21:18 -0800
          Re: Big integers Thiago Adams <thiago.adams@gmail.com> - 2018-12-05 07:57 -0800
          Re: Big integers Bart <bc@freeuk.com> - 2018-12-05 15:59 +0000
            Re: Big integers Bart <bc@freeuk.com> - 2018-12-05 22:59 +0000
              Re: Big integers jameskuyper@alumni.caltech.edu - 2018-12-05 15:31 -0800
                Re: Big integers Robert Wessel <robertwessel2@yahoo.com> - 2018-12-05 20:03 -0600
              Re: Big integers scott@slp53.sl.home (Scott Lurndal) - 2018-12-05 23:42 +0000
                Re: Big integers James Kuyper <jameskuyper@alumni.caltech.edu> - 2018-12-05 20:15 -0500
              Re: Big integers Ike Naar <ike@iceland.freeshell.org> - 2018-12-10 07:26 +0000
                Re: Big integers Bart <bc@freeuk.com> - 2018-12-10 18:38 +0000
                Re: Big integers scott@slp53.sl.home (Scott Lurndal) - 2018-12-10 19:10 +0000
                Re: Big integers Bart <bc@freeuk.com> - 2018-12-10 21:23 +0000
                Re: Big integers Ike Naar <ike@iceland.freeshell.org> - 2018-12-10 22:47 +0000
          Re: Big integers David Brown <david.brown@hesbynett.no> - 2018-12-05 22:15 +0100
        Re: Big integers Bart <bc@freeuk.com> - 2018-12-06 13:43 +0000
          Re: Big integers Thiago Adams <thiago.adams@gmail.com> - 2018-12-06 07:50 -0800
      Re: Big integers Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-12-05 15:19 +0000
        Re: Big integers luser droog <luser.droog@gmail.com> - 2018-12-10 23:19 -0800
          Re: Big integers David Brown <david.brown@hesbynett.no> - 2018-12-11 08:45 +0100
            Re: Big integers Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-12-11 11:15 +0000
              Re: Big integers Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-12-11 04:36 -0800
                Re: Big integers David Brown <david.brown@hesbynett.no> - 2018-12-11 14:35 +0100
              Re: Modules again (was: Big integers) Bart <bc@freeuk.com> - 2018-12-11 12:53 +0000
                Re: Modules again David Brown <david.brown@hesbynett.no> - 2018-12-11 14:45 +0100
                Re: Modules again Bart <bc@freeuk.com> - 2018-12-11 16:08 +0000
                Re: Modules again David Brown <david.brown@hesbynett.no> - 2018-12-11 21:37 +0100
                Re: Modules again Thiago Adams <thiago.adams@gmail.com> - 2018-12-11 08:59 -0800
                Re: Modules again Bart <bc@freeuk.com> - 2018-12-11 17:49 +0000
                Re: Modules again David Brown <david.brown@hesbynett.no> - 2018-12-11 21:44 +0100
                Re: Modules again scott@slp53.sl.home (Scott Lurndal) - 2018-12-11 18:02 +0000
                Re: Modules again Thiago Adams <thiago.adams@gmail.com> - 2018-12-11 10:10 -0800
                Re: Modules again scott@slp53.sl.home (Scott Lurndal) - 2018-12-11 18:54 +0000
                Re: Modules again Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2018-12-11 13:14 -0500
                Re: Modules again scott@slp53.sl.home (Scott Lurndal) - 2018-12-11 18:54 +0000
                Re: Modules again Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2018-12-11 14:42 -0500
                Re: Modules again David Brown <david.brown@hesbynett.no> - 2018-12-11 21:54 +0100
                Re: Modules again Keith Thompson <kst-u@mib.org> - 2018-12-11 14:53 -0800
                Re: Modules again David Brown <david.brown@hesbynett.no> - 2018-12-12 08:24 +0100
                Re: Modules again David Brown <david.brown@hesbynett.no> - 2018-12-11 21:51 +0100
                Re: Modules again scott@slp53.sl.home (Scott Lurndal) - 2018-12-11 23:24 +0000
                Re: Modules again Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2018-12-11 18:44 -0500
                Re: Modules again Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2018-12-11 18:45 -0500
                Re: Modules again Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-12-12 06:39 +0000
                Re: Modules again James Kuyper <jameskuyper@alumni.caltech.edu> - 2018-12-12 07:59 -0500
                Re: Modules again mark.bluemel@gmail.com - 2018-12-12 05:43 -0800
                Re: Modules again scott@slp53.sl.home (Scott Lurndal) - 2018-12-12 14:20 +0000
                Re: Modules again David Brown <david.brown@hesbynett.no> - 2018-12-12 17:10 +0100
                Re: Modules again James Kuyper <jameskuyper@alumni.caltech.edu> - 2018-12-12 13:39 -0800
                Re: Modules again scott@slp53.sl.home (Scott Lurndal) - 2018-12-12 14:19 +0000
                Re: Modules again Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2018-12-12 10:28 -0500
      Re: Big integers Ian Collins <ian-news@hotmail.com> - 2018-12-06 08:10 +1300
        Re: Big integers Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-12-05 20:57 +0000
          Re: Big integers Ian Collins <ian-news@hotmail.com> - 2018-12-06 10:16 +1300
            Re: Big integers Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-12-05 23:15 +0000
              Re: Big integers scott@slp53.sl.home (Scott Lurndal) - 2018-12-05 23:44 +0000
  Re: Big integers Robert Wessel <robertwessel2@yahoo.com> - 2018-12-05 02:51 -0600
  Re: Big integers antispam@math.uni.wroc.pl - 2018-12-07 15:26 +0000
    Re: Big integers Bart <bc@freeuk.com> - 2018-12-07 16:27 +0000
      Re: Big integers scott@slp53.sl.home (Scott Lurndal) - 2018-12-07 16:36 +0000
        Re: Big integers Bart <bc@freeuk.com> - 2018-12-07 17:01 +0000
      Re: Big integers Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-12-07 17:55 +0000
      Re: Big integers antispam@math.uni.wroc.pl - 2018-12-07 19:26 +0000
        Re: Big integers Bart <bc@freeuk.com> - 2018-12-07 21:39 +0000
          Re: Big integers Ian Collins <ian-news@hotmail.com> - 2018-12-08 10:51 +1300
  Re: Big integers Anton Shepelev <anton.txt@gmail.com> - 2018-12-08 00:43 +0300
    Re: Big integers Bart <bc@freeuk.com> - 2018-12-08 01:08 +0000
    Re: Big integers David Brown <david.brown@hesbynett.no> - 2018-12-08 15:13 +0100
      Re: Big integers David Brown <david.brown@hesbynett.no> - 2018-12-08 15:15 +0100
        Re: Big integers Bart <bc@freeuk.com> - 2018-12-08 14:48 +0000
          Re: Big integers Thiago Adams <thiago.adams@gmail.com> - 2018-12-10 05:10 -0800
            Re: Big integers Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-12-10 05:22 -0800
              Re: Big integers David Brown <david.brown@hesbynett.no> - 2018-12-10 15:27 +0100
                Re: Big integers scott@slp53.sl.home (Scott Lurndal) - 2018-12-10 15:59 +0000
                Re: Big integers antispam@math.uni.wroc.pl - 2018-12-11 21:14 +0000
            Re: Big integers Bart <bc@freeuk.com> - 2018-12-10 14:56 +0000
              Re: Big integers Ike Naar <ike@iceland.freeshell.org> - 2018-12-10 17:46 +0000
                Re: Big integers Bart <bc@freeuk.com> - 2018-12-10 18:24 +0000
                Re: Big integers Thiago Adams <thiago.adams@gmail.com> - 2018-12-10 11:12 -0800
                Re: Big integers Thiago Adams <thiago.adams@gmail.com> - 2018-12-10 11:23 -0800
                Re: Big integers Bart <bc@freeuk.com> - 2018-12-10 21:44 +0000
                Re: Big integers Thiago Adams <thiago.adams@gmail.com> - 2018-12-11 10:20 -0800
                Re: Big integers "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-12-11 13:15 -0800
      Re: Big integers Keith Thompson <kst-u@mib.org> - 2018-12-08 12:14 -0800
        Re: Big integers David Brown <david.brown@hesbynett.no> - 2018-12-09 13:31 +0100
      Re: Big integers "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-12-08 15:52 -0800
  Re: Big integers Bart <bc@freeuk.com> - 2018-12-16 19:29 +0000
  Re: Big integers "Tristan B. Kildaire" <deavmi@disroot.org> - 2018-12-25 12:59 +0000
    Re: Big integers Bart <bc@freeuk.com> - 2018-12-25 15:54 +0000

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