Faster arithmetic for number-theoretic transforms
We show how to improve the efficiency of the computation of fast Fourier transforms over F_p where p is a word-sized prime. Our main technique is optimisation of the basic arithmetic, in effect decreasing the total number of reductions modulo p, by making use of a redundant representation for integers modulo p. We give performance results showing a significant improvement over Shoup's NTL library.
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Categories
Symbolic Computation
Data Structures and Algorithms
68W30
F.2.1
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