A cache-friendly truncated FFT

Published 17 Oct 2008 in cs.SC and cs.DS | (0810.3203v1)

Abstract: We describe a cache-friendly version of van der Hoeven's truncated FFT and inverse truncated FFT, focusing on the case of `large' coefficients, such as those arising in the Schonhage--Strassen algorithm for multiplication in Z[x]. We describe two implementations and examine their performance.

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