fft_small_ifft_trunc
Synopsis
#include <flint/fft_small.h>void fft_small_ifft_trunc(fft_small_op_t X, ulong itrunc, ulong clear_to, const ulong * scale, const fft_small_plan_t P)sourceInverse transform of the first itrunc slots in place, with the truncation rounded up as for the plan. If scale is not NULL, scale[i] is a normalisation factor modulo the i-th prime that was not applied in the pointwise stage, and is applied after the transform. The slots [\mathtt{itrunc}, \mathtt{clear\_to}) are set to zero, for exports that read whole chunks. X is marked as being in the product domain.
Cite this page
The FLINT team, “fft_small_ifft_trunc (fft_small.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/fft_small/fft_small_ifft_trunc.html (generated 2026-10-20).
@misc{flint-doc-fft-small-fft-small-ifft-trunc,
author = {{The FLINT team}},
title = {{fft\_small\_ifft\_trunc (fft\_small.h)}},
howpublished = {FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev},
year = {2026},
url = {https://flintlib.org/doc/fft_small/fft_small_ifft_trunc.html},
note = {Generated 2026-10-20}
}