From: Guillaume Melquiond (guillaume.melquiond_at_[hidden])
Date: 2006-05-01 10:40:34
Le lundi 01 mai 2006 à 10:41 +0100, John Maddock a écrit :
> > Yes, I think there would be a positive response to an SOC proposal in
> > this area. You are correct, there is no multiprecision
> > arithmetic support in Boost now. However, be aware that there is some
> > prior work already in the boost sandbox. You might want to have a
> > look at these links:
> A big int should be too hard, an arbitary precision floating point arithmetc
> type would be very welcome too. That's harder as it needs std lib support
> to be useful (exp, pow, log trig functions etc), so it's rather more work,
> but then again the student has all summer right ? :-)
I am not sure what you mean by "arbitrary precision floating-point
arithmetic". There are two different approaches: arbitrary precision
arithmetic (accuracy-driven implementations) and multi-precision
floating-point arithmetic (precision-driven implementations). NTL falls
in the second category.
> The existing lib's in this area all have downsides: NTL is very reliable,
> but is the most thread-unsafe code I've ever seen. Lydia looks good but is
> licence constrained, and doesn't really build on Win32. Any others?
MPFR is a C multi-precision floating-point library. IRRAM and Reallib
are C++ arbitrary precision libraries.
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