pack_fseek - Seeks inside a stream. Allegro game programming library.

       Moves  the position indicator of the stream `f'. Unlike the standard fseek() function, this only supports
       forward movements relative to the current position and  in  read-only  streams,  so  don't  use  negative
       offsets.  Note  that  seeking is very slow when reading compressed files, and so should be avoided unless
       you are sure that the file is not compressed. Example:

          input_file = pack_fopen("data.bin", "r");
          if (!input_file)
             abort_on_error("Couldn't open binary data!");
          /* Skip some useless header before reading data. */
          pack_fseek(input_file, 32);

       pack_fseek - Seeks inside a stream. Allegro game programming library.

       Returns zero on success or a negative number on error, storing the error code in `errno'.

pack_fopen(3alleg4), pack_fopen_chunk(3alleg4), expackf(3alleg4)

Allegro                                           version 4.4.3                              pack_fseek(3alleg4)

#include<allegro.h>intpack_fseek(PACKFILE*f,intoffset);