Function roaring_uint32_iterator_read_ranges 

pub unsafe extern "C" fn roaring_uint32_iterator_read_ranges(
    it: *mut roaring_uint32_iterator_t,
    buf: *mut roaring_uint32_range_closed_t,
    count: usize,
) -> usize

Reads next ${count} ranges from iterator into user-supplied ${buf}. A range is defined as a maximal interval of consecutive values. For example, the set {1,2,3,5,6} contains two ranges: [1..3] and [5..6]. Each range is represented as a struct {min,max}, both endpoints included. Consecutive values that span internal container boundaries are merged into a single range.

Returns the number of read ranges. This number can be smaller than ${count}, which means that the iterator is drained.

This function satisfies the semantics of iteration and can be used together with other iterator functions.

• first range will start with ${it}->current_value
• after the function returns, the iterator is positioned at the next element after the end of the last returned range, or ${it}->has_value is false if the bitmap is exhausted.