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Exponentiating by squaring

Posted on 2007-11-18 00:56 ZelluX 阅读(386) 评论(0)  编辑  收藏 所属分类: Mathematics
http://www.wiki.cn/wiki/Exponentiation_by_squaring

Exponentiating by squaring is an algorithm used for the fast computation of large integer powers of a number. It is also known as the square-and-multiply algorithm or binary exponentiation. In additive groups the appropriate name is double-and-add algorithm. It implicitly uses the binary expansion of the exponent. It is of quite general use, for example in modular arithmetic.


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