Function mlx_random_multivariate_normal 

pub unsafe extern "C" fn mlx_random_multivariate_normal(
    res: *mut mlx_array,
    mean: mlx_array,
    cov: mlx_array,
    shape: *const c_int,
    shape_num: usize,
    dtype: mlx_dtype,
    key: mlx_array,
    s: mlx_stream,
) -> c_int