A fast Euclidean algorithm for Gaussian integers

  • Authors:
  • George E. Collins

  • Affiliations:
  • Univ. of Delaware, Newark, U.S.A

  • Venue:
  • Journal of Symbolic Computation
  • Year:
  • 2002

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Abstract

A new version of the Euclidean algorithm is developed for computing the greatest common divisor of two Gaussian integers. It uses approximation to obtain a sequence of remainders of decreasing absolute values. The algorithm is compared with the new (1+i)-ary algorithm of Weilert and found to be somewhat faster if properly implemented.