A cache-friendly truncated FFT

Theor. Comput. Sci. 410 (2009), 2649–2658 (DOI).

arXiv preprint (October 2008).


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 Schönhage–Strassen algorithm for multiplication in Z[x]. We describe two implementations and examine their performance.

Back to the main page