Function roaring_bitmap_range_uint32_array 

pub unsafe extern "C" fn roaring_bitmap_range_uint32_array(
    r: *const roaring_bitmap_t,
    offset: usize,
    limit: usize,
    ans: *mut u32,
) -> bool

Convert the bitmap to a sorted array from offset by limit, output in ans.

Caller is responsible to ensure that there is enough memory allocated, e.g.

ans = malloc(roaring_bitmap_get_cardinality(limit) * sizeof(uint32_t));

This function always returns true

For more control, see roaring_uint32_iterator_skip and roaring_uint32_iterator_read, which can be used to e.g. tell how many values were actually read.