Function roaring_bitmap_portable_serialize

pub unsafe extern "C" fn roaring_bitmap_portable_serialize(
    r: *const roaring_bitmap_t,
    buf: *mut c_char,
) -> usize

Write a bitmap to a char buffer. The output buffer should refer to at least roaring_bitmap_portable_size_in_bytes(r) bytes of allocated memory.

Returns how many bytes were written which should match roaring_bitmap_portable_size_in_bytes(r).

This is meant to be compatible with the Java and Go versions: https://github.com/RoaringBitmap/RoaringFormatSpec

This function is endian-sensitive. If you have a big-endian system (e.g., a mainframe IBM s390x), the data format is going to be big-endian and not compatible with little-endian systems.

When serializing data to a file, we recommend that you also use checksums so that, at deserialization, you can be confident that you are recovering the correct data.