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explain_ftello_or_die(3)   Library Functions Manual   explain_ftello_or_die(3)

NAME
       explain_ftello_or_die - get stream position and report errors

SYNOPSIS
       #include	<libexplain/ftello.h>
       off_t explain_ftello_or_die(FILE	*fp);
       off_t explain_ftello_on_error(FILE *fp);

DESCRIPTION
       The explain_ftello_or_die function is used to call the ftello(3)	system
       call. On	failure	an explanation will be	printed	 to  stderr,  obtained
       from the	explain_ftello(3) function, and	then the process terminates by
       calling exit(EXIT_FAILURE).

       The explain_ftello_on_error function is used to call the	ftello(3) sys-
       tem call. On failure an explanation will	be printed to stderr, obtained
       from the	explain_ftello(3) function, but	still returns to the caller.

       fp      The fp, exactly as to be	passed to the ftello(3)	system call.

RETURN VALUE
       The  explain_ftello_or_die  function  only  returns  on	success,   see
       ftello(3)  for  more information. On failure, prints an explanation and
       exits, it does not return.

       The explain_ftello_on_error function always returns the value return by
       the wrapped ftello(3) system call.

EXAMPLE
       The  explain_ftello_or_die function is intended to be used in a fashion
       similar to the following	example:
	      off_t result = explain_ftello_or_die(fp);

SEE ALSO
       ftello(3)
	       get stream position

       explain_ftello(3)
	       explain ftello(3) errors

       exit(2) terminate the calling process

COPYRIGHT
       libexplain version 1.3
       Copyright (C) 2013 Peter	Miller

						      explain_ftello_or_die(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT

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