clearerr(3)                                                 clearerr(3)

  clearerr()

  NAME

    clearerr(), feof(), ferror(), fileno() - check and reset stream status

  SYNOPSIS

    #include 

    void clearerr (FILE *stream)
    int feof (FILE *stream)
    int ferror (FILE *stream)
    int fileno (FILE *stream)

  DESCRIPTION

    The function clearerr(3) clears the end-of-file and error indicators for
    the stream pointed to by stream.

    The function feof(3) 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(3).

    The function ferror(3) 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(3) function.

    The function fileno(3) examines the argument stream and returns its
    integer descriptor.

  ERRORS

    These functions should not fail and do not set the external variable errno

  SEE ALSO

    open(2)

  USAGE NOTES

    All of these functions are thread safe.

    None of these functions are async-signal safe.