public static extern void init_checksum(ref ByteIOContext s, UpdateChecksumCallback update_checksun, ulong checksum);
public static extern void init_checksum(ref ByteIOContext s, UpdateChecksumCallback update_checksun, ulong checksum);
public static extern void init_checksum(ref ByteIOContext s, UpdateChecksumCallback update_checksun, ulong checksum);
public static extern void init_checksum(ref ByteIOContext s, UpdateChecksumCallback update_checksun, ulong checksum);