ifft_butterfly
Synopsis
#include <flint/fft.h>void ifft_butterfly(mp_limb_t * s, mp_limb_t * t, mp_limb_t * i1, mp_limb_t * i2, mp_size_t i, mp_size_t limbs, flint_bitcnt_t w)sourceThe inverse butterfly: sets s = i_1 + 2^{-iw} i_2 and t = i_1 - 2^{-iw} i_2 modulo p, for 0 \le iw < N. i2 is overwritten.
Cite this page
The FLINT team, “ifft_butterfly (fft.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/fft/ifft_butterfly.html (generated 2026-10-20).
@misc{flint-doc-fft-ifft-butterfly,
author = {{The FLINT team}},
title = {{ifft\_butterfly (fft.h)}},
howpublished = {FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev},
year = {2026},
url = {https://flintlib.org/doc/fft/ifft_butterfly.html},
note = {Generated 2026-10-20}
}