public extern static int PHYSFS_writeULE64(IntPtr file, PHYSFS_uint64 val);
public extern static PHYSFS_uint64 PHYSFS_swapULE64(PHYSFS_uint64 val);
public extern static int PHYSFS_seek(IntPtr handle, PHYSFS_uint64 pos);
public extern static int PHYSFS_setBuffer(IntPtr handle, PHYSFS_uint64 bufsize);
public extern static int PHYSFS_readUBE64(IntPtr handle, ref PHYSFS_uint64 val);