FERROR(3)                   BSD Programmer's Manual                  FERROR(3)

NAME
     clearerr, feof, ferror, fileno - check and reset stream status

SYNOPSIS
     #include <stdio.h>

     void
     clearerr(FILE *stream)

     int
     feof(FILE *stream)

     int
     ferror(FILE *stream)

     int
     fileno(FILE *stream)

DESCRIPTION
     The function clearerr() clears the end-of-file and error indicators for
     the stream pointed to by stream.

     The function feof() tests the end-of-file indicator for the stream point-
     ed to by stream, returning non-zero if it is set.  The end-of-file indi-
     cator can only be cleared by the function clearerr().

     The function ferror() tests the error indicator for the stream pointed to
     by stream, returning non-zero if it is set.  The error indicator can only
     be reset by the clearerr() function.

     The function fileno() examines the argument stream and returns its inte-
     ger desciptor.

ERRORS
     These functions should not fail and do not set the external variable
     errno.

SEE ALSO
     open(2),  stdio(3)

STANDARDS
     The functions clearerr(), feof(), and ferror() conform to ANSI
     C3.159-1989 (``ANSI C'').

BSDI BSD/386                    March 26, 1993                               1