Function croaring_sys::roaring_bitmap_or_many_heap

pub unsafe extern "C" fn roaring_bitmap_or_many_heap(
    number: u32, 
    x: *mut *const roaring_bitmap_t
) -> *mut roaring_bitmap_t

Compute the union of 'number' bitmaps using a heap. This can sometimes be faster than roaring_bitmap_or_many which uses a naive algorithm. Caller is responsible for freeing the result.