Re: Large number libraries/algorithms

From	James Kuyper <jameskuyper@verizon.net>
Newsgroups	comp.lang.c
Subject	Re: Large number libraries/algorithms
Date	2012-10-24 07:18 -0400
Organization	A noiseless patient Spider
Message-ID	<k68ipb$hl4$1@dont-email.me> (permalink)
References	(3 earlier) <vm9b88hl9qirqv7i8pnq5j3un82bvmsnik@4ax.com> <0.4b9d32dea7f57a2ad3b4.20121023000110BST.87ipa29knd.fsf@bsb.me.uk> <wNmdnbKqcMPz1xvNnZ2dnUVZ7oSdnZ2d@lyse.net> <lnipa1dkoy.fsf@nuthaus.mib.org> <UqqdnTtQPYLmDhrNnZ2dnUVZ7r-dnZ2d@lyse.net>

Show all headers | View raw

On 10/24/2012 03:01 AM, David Brown wrote:
...
> I noticed that (on gcc 4.5 on Linux-64).  There is also no int128_t or 
> related types in <stdint.h>.  And there is no way to express an int128_t 
> literal for targets that whose "long long" is smaller than 128 bits.  On 
> x86-64, "long long" is 64-bit (with "long" being 32-bit on Windows, 
> 64-bit on Linux), so until "long long long int" or "really long int" is 
> added to C, the language is missing a bit of support for 128-bit integers.

There's no need for that - that's what int128_t, int_least128_t and
int_fast128_t are reserved for. The language isn't missing anything,
it's just that particular implementation which has failed to implement
something which is already part of the language.
-- 
James Kuyper

Thread

Large number libraries/algorithms boltar2003@boltar.world - 2012-10-22 09:11 +0000
  Re: Large number libraries/algorithms Mark Bluemel <mark_bluemel@pobox.com> - 2012-10-22 10:15 +0100
  Re: Large number libraries/algorithms Heikki Kallasjoki <fis+usenet@zem.fi> - 2012-10-22 09:19 +0000
    Re: Large number libraries/algorithms boltar2003@boltar.world - 2012-10-22 09:40 +0000
  Re: Large number libraries/algorithms Noob <root@127.0.0.1> - 2012-10-22 11:24 +0200
  Re: Large number libraries/algorithms David Brown <david@westcontrol.removethisbit.com> - 2012-10-22 13:29 +0200
    Re: Large number libraries/algorithms boltar2003@boltar.world - 2012-10-22 11:53 +0000
      Re: Large number libraries/algorithms James Kuyper <jameskuyper@verizon.net> - 2012-10-22 08:01 -0400
        Re: Large number libraries/algorithms David Brown <david@westcontrol.removethisbit.com> - 2012-10-22 14:41 +0200
          Re: Large number libraries/algorithms James Kuyper <jameskuyper@verizon.net> - 2012-10-22 09:36 -0400
            Re: Large number libraries/algorithms Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-10-22 15:12 +0100
    Re: Large number libraries/algorithms Keith Thompson <kst-u@mib.org> - 2012-10-22 10:31 -0700
      Re: Large number libraries/algorithms Robert Wessel <robertwessel2@yahoo.com> - 2012-10-22 15:09 -0500
        Re: Large number libraries/algorithms Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-10-23 00:01 +0100
          Re: Large number libraries/algorithms David Brown <david@westcontrol.removethisbit.com> - 2012-10-23 09:38 +0200
            Re: Large number libraries/algorithms Steve Thompson <stevet810@gmail.com> - 2012-10-23 12:40 +0000
              Re: Large number libraries/algorithms David Brown <david@westcontrol.removethisbit.com> - 2012-10-23 16:23 +0200
                Re: Large number libraries/algorithms Steve Thompson <stevet810@gmail.com> - 2012-10-23 14:38 +0000
            Re: Large number libraries/algorithms Keith Thompson <kst-u@mib.org> - 2012-10-23 12:58 -0700
              Re: Large number libraries/algorithms David Brown <david@westcontrol.removethisbit.com> - 2012-10-24 09:01 +0200
                Re: Large number libraries/algorithms James Kuyper <jameskuyper@verizon.net> - 2012-10-24 07:18 -0400
                Re: Large number libraries/algorithms David Brown <david@westcontrol.removethisbit.com> - 2012-10-24 14:23 +0200
                Re: Large number libraries/algorithms Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-10-24 14:43 +0100
                Re: Large number libraries/algorithms Keith Thompson <kst-u@mib.org> - 2012-10-24 11:33 -0700
                Re: Large number libraries/algorithms Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-10-24 19:53 +0100
                Re: Large number libraries/algorithms James Kuyper <jameskuyper@verizon.net> - 2012-10-24 10:50 -0400
                Re: Large number libraries/algorithms Noob <root@localhost> - 2012-10-24 15:16 +0200
                Re: Large number libraries/algorithms Noob <root@localhost> - 2012-10-24 18:57 +0200
                Re: Large number libraries/algorithms Keith Thompson <kst-u@mib.org> - 2012-10-24 11:43 -0700
                Re: Large number libraries/algorithms David Brown <david@westcontrol.removethisbit.com> - 2012-10-25 09:05 +0200
  Re: Large number libraries/algorithms Eric Sosman <esosman@comcast-dot-net.invalid> - 2012-10-22 08:23 -0400
    Re: Large number libraries/algorithms tom st denis <tom@iahu.ca> - 2012-10-22 11:40 -0700
      Re: Large number libraries/algorithms Keith Thompson <kst-u@mib.org> - 2012-10-22 17:05 -0700
        Re: Large number libraries/algorithms tom st denis <tom@iahu.ca> - 2012-10-23 07:10 -0700
  Re: Large number libraries/algorithms David Brown <david@westcontrol.removethisbit.com> - 2012-10-22 14:42 +0200
    Re: Large number libraries/algorithms Chad <cdalten@gmail.com> - 2012-10-23 14:39 -0700
  Re: Large number libraries/algorithms pete <pfiland@mindspring.com> - 2012-10-24 03:27 -0400

csiph-web