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Re: Anyone working on 64-bit octave
From: |
Tatsuro MATSUOKA |
Subject: |
Re: Anyone working on 64-bit octave |
Date: |
Fri, 17 Feb 2012 15:47:18 +0900 (JST) |
Hello
For current state, please see
http://www.gnu.org/software/octave/doc/interpreter/Compiling-Octave-with-64_002dbit-Indexing.html#Compiling-Octave-with-64_002dbit-Indexing
Regards
Tatsuro
--- On Fri, 2012/2/17, Thomas D. Dean wrote:
> Is anyone working on making octave use the full precision of 64-bit machines?
>
> Currently, compiling octave on a x86_64 produces a 64-bit executable. But,
> because of the definition of double, this gives no precision gain for
> floating point over 32-bit machines.
>
> With gfortran, I can use -fdefault-real-8 and -fdefault-integer-8 and create
> an application which uses more of the machine's precision.
>
> I read gcc docs but cannot find a similar command line option for gcc46.
> Maybe the third time my eyes crossed, I missed something?
>
> The only way is to change 'int' to 'long int' and 'double' to 'long double'
> in the source code, a lot of work.
>
> Has anyone started on this?
>
> Tom Dean
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