RFR: 8334755: Asymptotically faster implementation of square root algorithm [v46]

fabioromano1 duke at openjdk.org
Sat Jul 27 21:06:51 UTC 2024


> I have implemented the Zimmermann's square root algorithm, available in works [here](https://inria.hal.science/inria-00072854/en/) and [here](https://www.researchgate.net/publication/220532560_A_proof_of_GMP_square_root).
> 
> The algorithm is proved to be asymptotically faster than the Newton's Method, even for small numbers. To get an idea of how much the Newton's Method is slow,  consult my article [here](https://arxiv.org/abs/2406.07751), in which I compare Newton's Method with a version of classical square root algorithm that I implemented. After implementing Zimmermann's algorithm, it turns out that it is faster than my algorithm even for small numbers.

fabioromano1 has updated the pull request incrementally with one additional commit since the last revision:

  Removed MBI.sqrt() old method

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/19710/files
  - new: https://git.openjdk.org/jdk/pull/19710/files/cdda3386..9ca2a814

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=19710&range=45
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19710&range=44-45

  Stats: 90 lines in 1 file changed: 0 ins; 90 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/19710.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19710/head:pull/19710

PR: https://git.openjdk.org/jdk/pull/19710


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