Function add

examples/cuda/gpu/add_gpu/src/lib.rs:12–18

(a: &[f32], b: &[f32], c: *mut f32)

#[kernel]
#[allow(improper_ctypes_definitions, clippy::missing_safety_doc)]
pub unsafe fn add(a: &[f32], b: &[f32], c: *mut f32) {
    let idx = thread::index_1d() as usize;
    if idx < a.len() {
        let elem = &mut *c.add(idx);
        *elem = a[idx] + b[idx];
    }
}