RE: [boost] multiprecision numerics for boost

From: Paul A. Bristow (pbristow_at_[hidden])
Date: 2001-03-29 05:18:12

You should also see Victor Shoup's NTL www.shoup.net/ntl
which I have used to calculate high accuracy math constants
proposed for Boost (QV).

Is in C++ already and offers choice of quad_float 106 mantissa bits (33
decimal digits)

or RR type which has a default of 150 mantissa bits
(but you choose how many you want at price of speed of course!)

Already in Standard form, though lacks numeric_limits values as yet,
but this should be fairly easy to add.

May be licence problems, but perhaps not.

Paul

Dr Paul A Bristow, hetp Chromatography
Prizet Farmhouse
Kendal, Cumbria
LA8 8AB      UK
[phone]
mailto:pbristow_at_[hidden]

> -----Original Message-----
> From: Jeremy Siek [mailto:jsiek_at_[hidden]]
> Sent: Wednesday, March 28, 2001 7:09 PM
> To: 'boost_at_[hidden]'
> Subject: Re: [boost] multiprecision numerics for boost
>
>
>
> This kind if thing is definitely needed... on a related note,
> I've looked at wrapping David Bailey's double double Fortran
> code in C++. If we had volunteers to look at boostifying these
> numeric types, it would be great!
>
> On Wed, 28 Mar 2001, Jason Zavaglia wrote:
>
> jason.> Is anything on the roadmap for something like this, ala
> BCD?  I've seen the
> jason.> GMP (C) library which looks portable and appropriately
> licensed, a quick fix
> jason.> would be to put a C++ wrapper around it or rewrite it to
> a C++ idiom.
> jason.>
> jason.> Given the rational number support, such an extension
> would be fill the
> jason.> problem space of accurate fixed point calculations...
> jason.>
> jason.> Any thoughts on this?
> jason.>
> jason.> Thanks
> jason.> Jason Zavaglia
> jason.>
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> jason.>
> jason.>
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> ----------------------------------------------------------------------
>  Jeremy Siek                        www: http://www.lsc.nd.edu/~jsiek/
>  Ph.D. Candidate                  email: jsiek_at_[hidden]
>  Univ. of Notre Dame         work phone: [phone]
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