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Reports (Research Report) Year : 2002

A Binary Recursive Gcd Algorithm


The binary algorithm is a variant of the Euclidean algorithm that performs well in practice. We present a quasi-linear time recursive algorithm that computes the greatest common divisor of two integers by simulating a slightly modified version of the binary algorithm. The structure of the recursive algorithm is very close to the one of the well-known Knuth-Schönhage fast gcd algorithm, but the description and the proof of correctness are significantly simpler in our case. This leads to a simplification of the implementation and to better running times.
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Dates and versions

inria-00071533 , version 1 (23-05-2006)


  • HAL Id : inria-00071533 , version 1


Damien Stehlé, Paul Zimmermann. A Binary Recursive Gcd Algorithm. [Research Report] RR-5050, INRIA. 2002. ⟨inria-00071533⟩
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