ntp/libntp/systime.c

61  * The sys_fuzz variable measures the minimum time to read the system
63  * using get_systime() after sys_tick and sys_fuzz have been determined,
64  * ntpd ensures each unprocessed clock reading is no less than sys_fuzz
66  * below sys_fuzz in the timestamp returned, ensuring each of its
71  * quantized to sys_tick, if sys_tick is greater than sys_fuzz, which
79 double	sys_fuzz = 0;		/* min. time to read the clock (s) */
116 	sys_fuzz = fuzz_val;
117 	INSIST(sys_fuzz >= 0);
118 	INSIST(sys_fuzz <= 1.0);
119 	/* [Bug 3450] ensure nsec fuzz >= sys_fuzz to reduce chance of
122 	sys_fuzz_nsec = (long)ceil(sys_fuzz * 1e9);
207 	 * After default_get_precision() has set a nonzero sys_fuzz,
209 	 * sys_fuzz over the prior reading, thereby assuring each
238 	dfuzz = ntp_random() * 2. / FRAC * sys_fuzz;
244 	 * sys_residual's effect for now) once sys_fuzz has been
258 		    && (sys_fuzz > 0.0)
328 	if (sys_tick > sys_fuzz)