From:	"D Lee" <dlee AT dera DOT gov DOT uk>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Longer than double?
Date:	16 Oct 1998 20:01:52 GMT
Organization:	Defence Evaluation & Research Agency
Message-ID:	<01bdf93f$d2063540$d00a5092@david_lee>
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Guruman wrote:
> 
>     Are there any add-on packages (or hacks) for DJGPP that provide
> extra-large precision functionality? I have seen products of this nature
for
> other compilers, but wouldn't know where to begin modifying them to
support
> DJGPP.
> 

The last chapter of the book "Numerical Recipes in C" deals with arithmetic
at arbitary precision.  The authors give C-code to carry out arithmetic
operations on numbers base 255, represented as character strings. They also
present an example program to return pi to arbitary precision (thousands of
decimal digits).  I have just compiled this using DJGPP/RHIDE and it seems
to work well.

There is an on-line version of "Numerical Recipes" at http://www.nr.com

David

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