pub unsafe extern "C" fn fft_convolution_precache(
ii: *mut *mut mp_limb_t,
jj: *mut *mut mp_limb_t,
depth: mp_limb_signed_t,
limbs: mp_limb_signed_t,
trunc: mp_limb_signed_t,
t1: *mut *mut mp_limb_t,
t2: *mut *mut mp_limb_t,
s1: *mut *mut mp_limb_t,
tt: *mut *mut mp_limb_t,
)