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OpenSolaris 2009.06 - man page for ferror (opensolaris section 3c)

ferror(3C)						   Standard C Library Functions 						ferror(3C)

ferror, feof, clearerr, fileno - stream status inquiries
#include <stdio.h> int ferror(FILE *stream); int feof(FILE *stream); void clearerr(FILE *stream); int fileno(FILE *stream);
The ferror() function returns a non-zero value when an error has previously occurred reading from or writing to the named stream (see Intro(3)). It returns 0 otherwise. The feof() function returns a non-zero value when EOF has previously been detected reading the named input stream. It returns 0 otherwise. The clearerr() function resets the error indicator and EOF indicator to 0 on the named stream. The fileno() function returns the integer file descriptor associated with the named stream; see open(2).
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+
open(2), Intro(3), fopen(3C), stdio(3C), attributes(5), standards(5) SunOS 5.11 17 Feb 2005 ferror(3C)