osf1 man page for ferror

ferror(3)						     Library Functions Manual							 ferror(3)

NAME
       ferror - Tests the error indicator on a stream

LIBRARY
       Standard C Library (libc)

SYNOPSIS
       #include <stdio.h>

       int ferror(
	       FILE *stream);

STANDARDS
       Interfaces documented on this reference page conform to industry standards as follows:

       ferror(): XSH5.0

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

PARAMETERS
       Specifies the input or output stream.

DESCRIPTION
       The ferror() function tests whether input/output errors have occurred on the specified stream.

NOTES
       [Tru64  UNIX]  The ferror() function may be a macro (depending on the compile-time definitions used in the source).  Consequently, you can-
       not use this interface where a function is necessary; for example, a subroutine pointer cannot point to it.

RETURN VALUES
       If an I/O error occurred when reading from or writing to the stream specified by the stream parameter, a nonzero value is returned.  Other-
       wise, a value of 0 (zero) is returned.

RELATED INFORMATION
       Functions: fopen(3), feof(3), fileno(3), clearerr(3)

       Standards: standards(5) delim off

																	 ferror(3)