9  *	$ gcc raw_skew.c -o raw_skew -lrt
34 	__x < 0 ? -(-__x >> __s) : __x >> __s; \
39 	if (val < 0)  in llabs()
40 		val = -val;  in llabs()
64 	return end_ns - start_ns;  in diff_timespec()
67 void get_monotonic_and_raw(struct timespec *mon, struct timespec *raw)  in get_monotonic_and_raw()  argument
70 	long long diff = 0, tmp;  in get_monotonic_and_raw()
73 	for (i = 0; i < 3; i++) {  in get_monotonic_and_raw()
81 		if (diff == 0 || newdiff < diff) {  in get_monotonic_and_raw()
85 			*mon = nsec_to_ts(tmp);  in get_monotonic_and_raw()
92 	struct timespec mon, raw, start, end;  in main()  local
100 		return -1;  in main()
103 	tx1.modes = 0;  in main()
105 	get_monotonic_and_raw(&mon, &raw);  in main()
106 	start = mon;  in main()
107 	delta1 = diff_timespec(mon, raw);  in main()
116 	get_monotonic_and_raw(&mon, &raw);  in main()
117 	end = mon;  in main()
118 	tx2.modes = 0;  in main()
120 	delta2 = diff_timespec(mon, raw);  in main()
125 	eppm = ((delta2-delta1)*NSEC_PER_SEC)/interval;  in main()
126 	eppm = -eppm;  in main()
134 	if (llabs(eppm - ppm) > 1000) {  in main()