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explain_ftell_or_die(3) Library Functions Manual explain_ftell_or_die(3) NAME explain_ftell_or_die - get stream position and report errors SYNOPSIS #include <libexplain/ftell.h> long explain_ftell_or_die(FILE *fp); long explain_ftell_on_error(FILE *fp); DESCRIPTION The explain_ftell_or_die function is used to call the ftell(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_ftell(3) function, and then the process terminates by calling exit(EXIT_FAILURE). The explain_ftell_on_error function is used to call the ftell(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_ftell(3) function, but still returns to the caller. fp The fp, exactly as to be passed to the ftell(3) system call. RETURN VALUE The explain_ftell_or_die function only returns on success, see ftell(3) for more information. On failure, prints an explanation and exits, it does not return. The explain_ftell_on_error function always returns the value return by the wrapped ftell(3) system call. EXAMPLE The explain_ftell_or_die function is intended to be used in a fashion similar to the following example: long result = explain_ftell_or_die(fp); SEE ALSO ftell(3) get stream position explain_ftell(3) explain ftell(3) errors exit(2) terminate the calling process COPYRIGHT libexplain version 1.3 Copyright (C) 2010 Peter Miller explain_ftell_or_die(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT
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