1use base2k::{Matrix3D, Module, VecZnx, VecZnxBig, VecZnxDft, VmpPMat, FFT64};
 2
 3fn main() {
 4    let log_n = 4;
 5    let n = 1 << log_n;
 6
 7    let module: Module = Module::new::<FFT64>(n);
 8    let log_base2k: usize = 15;
 9    let log_q: usize = 60;
10    let limbs: usize = (log_q + log_base2k - 1) / log_base2k;
11
12    let rows: usize = limbs + 1;
13    let cols: usize = limbs + 1;
14
15    // Maximum size of the byte scratch needed
16    let tmp_bytes: usize = module.vmp_prepare_contiguous_tmp_bytes(rows, cols)
17        | module.vmp_apply_dft_to_dft_tmp_bytes(limbs, limbs, rows, cols);
18
19    let mut buf: Vec<u8> = vec![0; tmp_bytes];
20
21    let mut a_values: Vec<i64> = vec![i64::default(); n];
22    a_values[1] = (1 << log_base2k) + 1;
23
24    let mut a: VecZnx = module.new_vec_znx(log_base2k, log_q);
25    a.set_i64(&a_values, 32);
26    a.normalize(&mut buf);
27
28    (0..a.limbs()).for_each(|i| println!("{}: {:?}", i, a.at(i)));
29
30    let mut b_mat: Matrix3D<i64> = Matrix3D::new(rows, cols, n);
31
32    (0..rows).for_each(|i| {
33        b_mat.at_mut(i, i)[0] = ((1 << 15) + 1) << 15;
34    });
35
36    println!();
37    (0..rows).for_each(|i| {
38        (0..cols).for_each(|j| println!("{} {}: {:?}", i, j, b_mat.at(i, j)));
39        println!();
40    });
41
42    let mut vmp_pmat: VmpPMat = module.new_vmp_pmat(rows, cols);
43    module.vmp_prepare_contiguous(&mut vmp_pmat, &b_mat.data, &mut buf);
44
45    let mut c_dft: VecZnxDft = module.new_vec_znx_dft(limbs);
46    module.vmp_apply_dft(&mut c_dft, &a, &vmp_pmat, &mut buf);
47
48    let mut c_big: VecZnxBig = c_dft.as_vec_znx_big();
49    module.vec_znx_idft_tmp_a(&mut c_big, &mut c_dft, limbs);
50
51    let mut res: VecZnx = module.new_vec_znx(log_base2k, log_q);
52    module.vec_znx_big_normalize(&mut res, &c_big, &mut buf);
53
54    let mut values_res: Vec<i64> = vec![i64::default(); n];
55    res.get_i64(&mut values_res);
56
57    (0..res.limbs()).for_each(|i| println!("{}: {:?}", i, res.at(i)));
58
59    println!("{:?}", values_res)
60}