poulpy/base2k/examples/vmp.rs

use base2k::{
    Encoding, FFT64, MatZnxDft, MatZnxDftOps, Module, VecZnx, VecZnxBig, VecZnxBigOps, VecZnxDft, VecZnxDftOps, VecZnxOps,
    ZnxInfos, ZnxLayout, alloc_aligned,
};

fn main() {
    let log_n: i32 = 5;
    let n: usize = 1 << log_n;

    let module: Module<FFT64> = Module::<FFT64>::new(n);
    let log_base2k: usize = 15;

    let a_cols: usize = 2;
    let a_size: usize = 5;

    let log_k: usize = log_base2k * a_size - 5;

    let mat_rows: usize = a_size;
    let mat_cols_in: usize = a_cols;
    let mat_cols_out: usize = 2;
    let mat_size: usize = a_size + 1;

    let mut tmp_bytes_vmp: Vec<u8> = alloc_aligned(
        module.vmp_prepare_row_tmp_bytes(mat_cols_out, mat_size)
            | module.vmp_apply_dft_tmp_bytes(
                a_size,
                a_size,
                mat_rows,
                mat_cols_in,
                mat_cols_out,
                mat_size,
            ),
    );

    let mut tmp_bytes_dft: Vec<u8> = alloc_aligned(module.bytes_of_vec_znx_dft(mat_cols_out, mat_size));

    let mut a: VecZnx = module.new_vec_znx(a_cols, a_size);

    (0..a_cols).for_each(|i| {
        let mut values: Vec<i64> = vec![i64::default(); n];
        values[1 + i] = (1 << log_base2k) + 1;
        a.encode_vec_i64(i, log_base2k, log_k, &values, 32);
        a.normalize(log_base2k, i, &mut tmp_bytes_vmp);
        a.print(n, i);
        println!();
    });

    let mut mat_znx_dft: MatZnxDft<FFT64> = module.new_mat_znx_dft(mat_rows, mat_cols_in, mat_cols_out, mat_size);

    (0..a.size()).for_each(|row_i| {
        let mut tmp: VecZnx = module.new_vec_znx(mat_cols_out, mat_size);
        (0..mat_cols_out).for_each(|j| {
            tmp.at_mut(j, row_i)[1 + j] = 1 as i64;
        });
        (0..mat_cols_in).for_each(|j| {
            module.vmp_prepare_row(&mut mat_znx_dft, row_i, j, &tmp, &mut tmp_bytes_vmp);
        })
    });

    let mut c_dft: VecZnxDft<FFT64> = module.new_vec_znx_dft_from_bytes_borrow(mat_cols_out, mat_size, &mut tmp_bytes_dft);
    module.vmp_apply_dft(&mut c_dft, &a, &mat_znx_dft, &mut tmp_bytes_vmp);

    let mut res: VecZnx = module.new_vec_znx(mat_cols_out, a_size);
    let mut c_big: VecZnxBig<FFT64> = c_dft.alias_as_vec_znx_big();
    (0..mat_cols_out).for_each(|i| {
        module.vec_znx_idft_tmp_a(&mut c_big, i, &mut c_dft, i);
        module.vec_znx_big_normalize(log_base2k, &mut res, i, &c_big, i, &mut tmp_bytes_vmp);

        let mut values_res: Vec<i64> = vec![i64::default(); n];
        res.decode_vec_i64(i, log_base2k, log_k, &mut values_res);
        res.print(n, i);
        println!();
        println!("{:?}", values_res);
        println!();
    });

    module.free();
}