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Re: [INFO] Yet Another sqrt algorithm.


From: Paul Zimmermann
Subject: Re: [INFO] Yet Another sqrt algorithm.
Date: Tue, 11 Dec 2001 14:17:13 +0100

   The current release is GMP 4.0.  Please download
   <ftp://ftp.gnu.org/gnu/gmp/gmp-4.0.tar.gz>. The algorithm
   used currently was developed by Paul Zimmermann.  I don't
   know if you code could improve some part of that algorithm,
   since my understanding of the algorithm is limited.

   Paul, what do you think?

It could improve the one-limb code, which currently uses a 8-bit
table approximation, together with 2 or 3 Newton's loops, depending
on the word size. See function mpn_sqrtrem1 in mpn/sqrtrem.c from GMP 4.0.

Paul Zimmermann



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