pack_ferror - Tells if an error occurred during an operation on the stream. Allegro game programming

       Since EOF is used to report errors by some functions, it's often better to use the  pack_feof()  function
       to  check  explicitly  for  end  of  file  and  pack_ferror()  to  check for errors. Both functions check
       indicators that are part of  the  internal  state  of  the  stream  to  detect  correctly  the  different
       situations.

       pack_ferror  -  Tells  if  an  error occurred during an operation on the stream. Allegro game programming
       library.

       Returns nonzero if the error indicator for the stream is set, meaning that an error has occurred during a
       previous operation on the stream.

pack_fopen(3alleg4), pack_fopen_chunk(3alleg4)

Allegro                                           version 4.4.3                             pack_ferror(3alleg4)

#include<allegro.h>intpack_ferror(PACKFILE*f);