1use crate::{
 2    layouts::{ScalarZnx, ScalarZnxToRef, VecZnx, VecZnxToMut, VecZnxToRef, ZnxInfos, ZnxView, ZnxViewMut},
 3    reference::znx::{ZnxAdd, ZnxAddInplace, ZnxCopy, ZnxZero},
 4};
 5
 6pub fn vec_znx_add_scalar<R, A, B, ZNXARI>(res: &mut R, res_col: usize, a: &A, a_col: usize, b: &B, b_col: usize, b_limb: usize)
 7where
 8    R: VecZnxToMut,
 9    A: ScalarZnxToRef,
10    B: VecZnxToRef,
11    ZNXARI: ZnxAdd + ZnxCopy + ZnxZero,
12{
13    let a: ScalarZnx<&[u8]> = a.to_ref();
14    let b: VecZnx<&[u8]> = b.to_ref();
15    let mut res: VecZnx<&mut [u8]> = res.to_mut();
16
17    let min_size: usize = b.size().min(res.size());
18
19    #[cfg(debug_assertions)]
20    {
21        assert!(b_limb < min_size, "b_limb: {b_limb} > min_size: {min_size}");
22    }
23
24    for j in 0..min_size {
25        if j == b_limb {
26            ZNXARI::znx_add(res.at_mut(res_col, j), a.at(a_col, 0), b.at(b_col, j));
27        } else {
28            ZNXARI::znx_copy(res.at_mut(res_col, j), b.at(b_col, j));
29        }
30    }
31
32    for j in min_size..res.size() {
33        ZNXARI::znx_zero(res.at_mut(res_col, j));
34    }
35}
36
37pub fn vec_znx_add_scalar_inplace<R, A, ZNXARI>(res: &mut R, res_col: usize, res_limb: usize, a: &A, a_col: usize)
38where
39    R: VecZnxToMut,
40    A: ScalarZnxToRef,
41    ZNXARI: ZnxAddInplace,
42{
43    let a: ScalarZnx<&[u8]> = a.to_ref();
44    let mut res: VecZnx<&mut [u8]> = res.to_mut();
45
46    #[cfg(debug_assertions)]
47    {
48        assert!(res_limb < res.size());
49    }
50
51    ZNXARI::znx_add_inplace(res.at_mut(res_col, res_limb), a.at(a_col, 0));
52}