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FERROR(3)	       FreeBSD Library Functions 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
     pointed to	by stream, returning non-zero if it is set.

     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 file descriptor.

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
     X3.159-1989 ("ANSI	C89").	The function fileno() conforms to ISO/IEC
     9945-1:1990 ("POSIX.1").

HISTORY
     The functions clearerr(), feof(), ferror(), and fileno() first appeared
     in	Version	7 AT&T UNIX.

FreeBSD	13.0			 July 17, 2013			  FreeBSD 13.0

NAME | SYNOPSIS | DESCRIPTION | ERRORS | SEE ALSO | STANDARDS | HISTORY

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