fileno(3) - NetBSD Manual Pages

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FERROR(3)               NetBSD Library Functions Manual              FERROR(3)


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 pointed to by stream, returning non-zero if it is set. The end-of-file indicator 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 C89''). The function fileno() conforms to ISO/IEC 9945-1:1990 (``POSIX.1''). NetBSD 5.0 April 19, 1994 NetBSD 5.0
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