helloworld.rs

use arrayfire::*;

#[allow(unused_must_use)]
fn main() {
    set_device(0);
    info();
    print!("Info String:\n{}", info_string(true));
    println!("Arrayfire version: {:?}", get_version());
    let (name, platform, toolkit, compute) = device_info();
    print!(
        "Name: {}\nPlatform: {}\nToolkit: {}\nCompute: {}\n",
        name, platform, toolkit, compute
    );
    println!("Revision: {}", get_revision());

    let num_rows: i64 = 5;
    let num_cols: i64 = 3;
    let values: [f32; 3] = [1.0, 2.0, 3.0];
    let indices = Array::new(&values, Dim4::new(&[3, 1, 1, 1]));

    af_print!("Indices ", indices);

    let dims = Dim4::new(&[num_rows as u64, num_cols as u64, 1, 1]);

    let mut a = randu::<f32>(dims);
    af_print!("Create a 5-by-3 float   matrix on the GPU", a);

    println!("Element-wise arithmetic");
    let b = add(&sin(&a), &1.5f32, false);

    let b2 = add(&sin(&a), &cos(&a), false);

    let b3 = !&a;
    af_print!("sin(a) + 1.5 a.k.a b => ", b);
    af_print!("sin(a) + cos(a) => ", b2);
    af_print!("!a => ", b3);

    let test = a.clone() + b.clone();
    af_print!("a + b", test);

    let negation = -(a.clone());
    af_print!("-a ", negation);

    // Index array using sequences
    let seqs = &[Seq::new(1u32, 3, 1), Seq::default()];
    let sub = index(&a, seqs);
    af_print!("a(seq(1,3,1), span)", sub);

    //Index array using array and sequence
    let seq4gen = Seq::new(0u32, 2, 1);

    let mut idxrs = Indexer::default();
    idxrs.set_index(&indices, 0, None);
    idxrs.set_index(&seq4gen, 1, Some(false));

    let sub2 = index_gen(&a, idxrs);
    af_print!("a(indices, seq(0, 2, 1))", sub2);

    println!("Fourier transform the result");
    print(&fft(&b, 1.0, 0));

    println!("Grab last row & col of the random matrix");
    print(&a);
    print(&row(&a, num_rows - 1));
    print(&col(&a, num_cols - 1));

    let r_dims = Dim4::new(&[3, 1, 1, 1]);
    let r_input: [f32; 3] = [1.0, 1.0, 1.0];
    let r = Array::new(&r_input, r_dims);
    set_row(&mut a, &r, num_rows - 1);
    af_print!("Set last row to 1's", a);

    let d_dims = Dim4::new(&[2, 3, 1, 1]);
    let d_input: [i32; 6] = [1, 2, 3, 4, 5, 6];
    let d = Array::new(&d_input, d_dims);
    af_print!("Create 2-by-3 matrix from host data", d);

    //// // Sort A
    //println!("Sort A and print sorted array and corresponding indices");
    //let x = sort_index(&a, 0, true);
    //print(&x.0);
    //print(&x.1);

    let u8_cnst = &constant(1 as u8, dims);
    af_print!("u8 constant array", u8_cnst);
    println!(
        "Is u8_cnst array float precision type ? {}",
        u8_cnst.is_single()
    );
}