A computational method for determining the regulator of a real quadratic field Q(\/D) is described. This method makes use of the properties of the nearest integer continued fraction of \[d and is about 25% faster than methods which use the ordinary (integer part) continued fraction of \JD. Several tables are also presented. 1. Introduction. In Williams and Broere [5] it is shown how the regulator of a real quadratic field Q(s/D) (Ö > 0 and D not a perfect square) can be determined by using the ordinary continued fraction (OCF) algorithm. If VÔ = [qo'Qi'Qi'Qs' •• 'Qn-ven\
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