public extern static PHYSFS_sint64 PHYSFS_swapSLE64(PHYSFS_sint64 val);
public extern static int PHYSFS_writeSLE64(IntPtr file, PHYSFS_sint64 val);
public extern static int PHYSFS_readSLE64(IntPtr handle, ref PHYSFS_sint64 val);
public extern static PHYSFS_sint64 PHYSFS_swapSLE64(PHYSFS_sint64 val);
public extern static int PHYSFS_writeSLE64(IntPtr file, PHYSFS_sint64 val);
public extern static int PHYSFS_readSLE64(IntPtr handle, ref PHYSFS_sint64 val);