xrt/tests/memcpy.rs

#[test]
pub fn test_memcpy() {
    let mut buffer1: Vec<u8> = Vec::with_capacity(0x1000);
    let mut buffer2: Vec<u8> = Vec::with_capacity(0x1000);


    // fill buffer1 with _random_ bytes
    let mut seed = 0x696969u64;
    for _ in 0..0x200 {
        buffer1.extend(seed.to_le_bytes());
        seed = seed.wrapping_mul(6364136223846793005).wrapping_add(1)
    }

    // set buffer2's length to its capacity
    unsafe { buffer2.set_len(0x1000); }

    // copy buffer1 to buffer2
    unsafe { xrt::memcpy(buffer2.as_mut_ptr(), buffer1.as_ptr(), 0x1000) };

    assert_eq!(buffer1, buffer2);

}