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fixed vec_znx.rsh

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Jean-Philippe Bossuat
2025-03-05 16:11:41 +01:00
parent e149aa584a
commit 97a1559bf2
2 changed files with 8 additions and 2 deletions
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9
base2k/src/vec_znx.rs
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@@ -475,13 +475,18 @@ pub fn rsh<T: VecZnxCommon>(log_base2k: usize, a: &mut T, k: usize, tmp_bytes: &
(cols_steps..cols).for_each(|i| { (cols_steps..cols).for_each(|i| {
izip!(carry_i64.iter_mut(), a.at_mut(i).iter_mut()).for_each(|(ci, xi)| { izip!(carry_i64.iter_mut(), a.at_mut(i).iter_mut()).for_each(|(ci, xi)| {
*xi += *ci << log_base2k; *xi += *ci << log_base2k;
*ci = *xi & mask; *ci = get_base_k_carry(*xi, k_rem);
*xi /= 1 << k_rem; *xi = (*xi-*ci)>>k_rem;
}); });
}) })
} }
} }
#[inline(always)]
fn get_base_k_carry(x: i64, k: usize) -> i64{
(x<<64-k) >> (64-k)
}
pub trait VecZnxCommon: VecZnxApi + Infos {} pub trait VecZnxCommon: VecZnxApi + Infos {}
pub trait VecZnxOps { pub trait VecZnxOps {

1
rns/src/modulus/impl_u64/223123123123123 123 123 Normal file
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@@ -0,0 +1 @@