#include "util.h" int main(int argc, char *argv[]) { GTimeVal a = { 5, 5 }, b; b = a; g_message("%li.%li", a.tv_sec, a.tv_usec); avahi_timeval_add(&a, -50); g_message("%li.%li", a.tv_sec, a.tv_usec); g_message("%lli", avahi_timeval_diff(&a, &b)); }