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From: "Vista" <abc@gmai.com>
Newsgroups: comp.soft-sys.matlab,comp.dsp
Subject: Re: Seeking numerical package for quadruple precision...
Date: Tue, 3 Jul 2007 18:53:39 -0700
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I mean, I am looking for the fastest one, not just any one...

I know from Google there are quite a few quadruple packages out there.

But I need the fastest ones... Speed is really critical...


"Vista" <abc@gmai.com> wrote in message 
news:f6etbs$2of$1@news.Stanford.EDU...
> Hi all,
>
> I have some computation and simulation which need quadruple precision. I 
> mean, the double precision is not enough, while high precision such as 
> 1000 digits is not needed, and that's too slow. I guess quadruple 
> precision exactly fits my problem and should be much faster than double 
> precision.
>
> Could anybody tell me if MS Visual C++, or Intel C, Intel Fortran have 
> already got quadruple precision in them and they are fully supported on 
> Intel based cpus? I guess Intel Fortran has quadruple precision, but since 
> I prefer C/C++ so my first choices are within C/C++ languages.
>
> Moreover, do GSL, Intel MKL, and IMSL etc. have got quadruple precision 
> support? I only need +, -, *, /, exp, and log.
>
> I eventually have to do everything in C/C++ so I am primarily looking for 
> numerical libraries, instead of Matlab or Maple or Mathematica's symbolic 
> capability.
>
> But if you know how to "simulate" quadruple precision in Matlab or Maple, 
> or Mathematica, in order to see if an algorithm will overslow when 
> converting into C/C++/Fortran, please let me know. I want to do the 
> algorithm design in Matlab, and test if it will overflow, before 
> converting everything into C/C++/Fortran.
>
> If you know how to "simulate" quadruple precision in Matlab, Maple or 
> Mathematica even with the symbolic toolbox, please let me know too... this 
> is for algorithm design and testing...
>
> Moreover, are there popular quadruple precision packages? Please recommend 
> the fastest one. I am really in huge need of speed.
>
> Thank you very much!
>
>
>
>