Extended Double ?

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3 total messages Started by Domenico De Vitto Mon, 05 Oct 1992 11:42

#747

Author: Domenico De Vitto
Date: Mon, 05 Oct 1992 11:42

11 lines
609 bytes

Is there a any classes anywhere that allow greater presision than long double
?

Ideally one where only memory was a limit would be best.

Surely _somone_ has written something like this ?

TIA,

Dom De Vitto

Re: Extended Double ?

#751

Author: Markku Sakkinen
Date: Mon, 05 Oct 1992 13:46

21 lines
1315 bytes

In article <1992Oct5.114242.15590@unix.brighton.ac.uk> ddv@unix.brighton.ac.uk (Domenico De Vitto) writes:
>
>Is there a any classes anywhere that allow greater presision than long double
>?
>
>Ideally one where only memory was a limit would be best.
> ...

Hmm:  already calculating 1./3. would then exhaust memory.
I think that unlimited-precision _rational_ arithmetic packages
have been built for several languages (don't know about C++).

----------------------------------------------------------------------
Markku Sakkinen (sakkinen@jytko.jyu.fi)
       SAKKINEN@FINJYU.bitnet (alternative network address)
Department of Computer Science and Information Systems
University of Jyvaskyla (a's with umlauts)
PL 35
SF-40351 Jyvaskyla (umlauts again)
Finland
----------------------------------------------------------------------

Re: Extended Double ?

#682

Author: Warwick Allison
Date: Thu, 08 Oct 1992 03:01

15 lines
905 bytes

ddv@unix.brighton.ac.uk (Domenico De Vitto) writes:

>Is there a any classes anywhere that allow greater presision than long double?

The class Rational in libg++ may be what you are looking for.  It is built
using the libg++ class Integer (an infinite precision int).


--
Warwick
--
  _-_|\      warwick@cs.uq.oz.au            /Disclaimer:
 /     * <-- Computer Science Department,  /  
 \_.-._/     University of Queensland,    /   C references are NULL && void*
      v      Brisbane, Australia.        /

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