FERROR(3) NetBSD Programmer's Manual FERROR(3)Powered by man-cgi (2024-03-20). Maintained for NetBSD by Kimmo Suominen. Based on man-cgi by Panagiotis Christias.
NAME
clearerr, feof, ferror, fileno - check and reset stream status
LIBRARY
Standard C Library (libc, -lc)
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 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 C''). The function fileno() conforms to IEEE Std1003.1-1990 (``POSIX''). NetBSD 1.4 April 19, 1994 1