explain_settimeofday_or_die - sets system time and report errors

       libexplain version 1.4
       Copyright (C) 2013 Peter Miller

                                                                                  explain_settimeofday_or_die(3)

       The  explain_settimeofday_or_die  function is used to call the settimeofday(2) system call. On failure an
       explanation will be printed to stderr, obtained from the explain_settimeofday(3) function, and  then  the
       process terminates by calling exit(EXIT_FAILURE).

       The explain_settimeofday_on_error function is used to call the settimeofday(2) system call. On failure an
       explanation  will  be  printed  to  stderr, obtained from the explain_settimeofday(3) function, but still
       returns to the caller.

       tv      The tv, exactly as to be passed to the settimeofday(2) system call.

       tz      The tz, exactly as to be passed to the settimeofday(2) system call.

       The  explain_settimeofday_or_die  function  is  intended to be used in a fashion similar to the following
       example:
              explain_settimeofday_or_die(tv, tz);

       explain_settimeofday_or_die - sets system time and report errors

       The  explain_settimeofday_or_die  function  only  returns  on  success,  see  settimeofday(2)  for   more
       information. On failure, prints an explanation and exits, it does not return.

       The explain_settimeofday_on_error function always returns the value return by the wrapped settimeofday(2)
       system call.

settimeofday(2)
               sets system time

       explain_settimeofday(3)
               explain settimeofday(2) errors

       exit(2) terminate the calling process

       #include <libexplain/settimeofday.h>
       void explain_settimeofday_or_die(const struct timeval *tv, const struct timezone *tz);
       int explain_settimeofday_on_error(const struct timeval *tv, const struct timezone *tz);