Function create_random_null_buffer

arrow/src/util/data_gen.rs:464–476

(size: usize, null_density: f32)

}

fn create_random_null_buffer(size: usize, null_density: f32) -> Buffer {
    let mut rng = seedable_rng();
    let mut mut_buf = MutableBuffer::new_null(size);
    {
        let mut_slice = mut_buf.as_slice_mut();
        (0..size).for_each(|i| {
            if rng.random::<f32>() >= null_density {
                bit_util::set_bit(mut_slice, i)
            }
        })
    };
    mut_buf.into()
}

/// Useful for testing. The range of values are not likely to be representative of the
/// actual bounds.