SIMPLE SOLUTIONS

EXPLAIN_FTELL_OR_DIE(3) - man page online | library functions

Get stream position and report errors.

Chapter
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 informa‐ tion. 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 fol‐ lowing 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
explain_ftell_or_die(3)
This manual Reference Other manuals
explain_ftell_or_die(3) referred by explain(3) | explain_ftell(3)
refer to _exit(2) | explain_ftell(3) | fseek(3)