[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Gm2] complex types

From: Andreas Fischlin
Subject: Re: [Gm2] complex types
Date: Tue, 16 Dec 2008 11:41:00 +0100
User-agent: Thunderbird (Macintosh/20081105)

Dear Micheal

Interesting and good to hear. Michael, can you please give me more details what this running accross means? Have you found a document that describes this extension? Any hints are greatly appreciated.


Michael Lambert wrote:
Hi Andreas,

On 15 Dec 2008, at 19:36, Andreas Fischlin wrote:

Tricky business. Let me state a couple of things:

1) IEEE 754 floating point is only defined for single (32) and double precision (64) reals.
2) 128 bit long reals are not abundantly available and indeed, there might be performance penalties for using it

I had thought there were just 32- and 64-bit reals, too.  However today I ran across IEEE 754-2008 which also defines a 128-bit real.  I agree--they probably aren't widely implemented.


Dr. Andreas Fischlin, Ph.D., Group Director

Terrestrial Systems Ecology
Institute of Integrative Biology: Ecology, Evolution, Infectious Disease
Department of Environmental Sciences, ETH Zurich

ETH Zurich, CHN E21.1
8092 Zurich, Switzerland

Phone: +41 44 633-6090 / Fax: +41 44 633-1136

     _/_/_/ _/_/_/ _/  _/
    _/       _/   _/  _/   Eidgenoessische Technische Hochschule Zuerich
   _/_/_/   _/   _/_/_/   Swiss Federal Institute of Technology Zurich
  _/       _/   _/  _/   Ecole polytechnique federale de Zurich
 _/_/_/   _/   _/  _/   Politecnico federale de Zurigo

             Make it as simple as possible, but distrust it!

reply via email to

[Prev in Thread] Current Thread [Next in Thread]