cmd/dispadmin/subr.c

62  * hrtconvert() returns the interval specified by htp as a single
63  * value in resolution htp->hrt_res.  Returns -1 on overflow.
66 hrtconvert(hrtimer_t *htp)
71 	product = htp->hrt_secs * htp->hrt_res;
73 	if (product / htp->hrt_res == htp->hrt_secs) {
74 		sum = product + htp->hrt_rem;
75 		if (sum - htp->hrt_rem == product) {
90  *	Convert interval expressed in htp->hrt_res to new_res.
92  *	Calculate: (interval * new_res) / htp->hrt_res  rounding off as
101 _hrtnewres(hrtimer_t *htp, ulong_t new_res, long round)
116 	if (htp->hrt_res == 0 || new_res == 0 ||
117 	    new_res > NANOSEC || htp->hrt_rem < 0)
120 	if (htp->hrt_rem >= htp->hrt_res) {
121 		htp->hrt_secs += htp->hrt_rem / htp->hrt_res;
122 		htp->hrt_rem = htp->hrt_rem % htp->hrt_res;
125 	interval = htp->hrt_rem;
127 		htp->hrt_res = new_res;
149 		result = numerator / htp->hrt_res;
154 		 *		(interval * new_res) % htp->hrt_res
156 		 *	If it is greater than half of the htp->hrt_res,
161 		 *		result * htp->hrt_res != numerator
171 			modulus = numerator - result * htp->hrt_res;
179 				if (twomodulus >= htp->hrt_res) {
186 				htp->hrt_res = new_res;
187 				htp->hrt_rem = result;
191 			if (result * htp->hrt_res != numerator) {
198 			htp->hrt_res = new_res;
199 			htp->hrt_rem = result;
202 			htp->hrt_res = new_res;
203 			htp->hrt_rem = result;
223 	 *		((interval * new_res) + htp->hrt_res / 2) / htp->hrt_res
227 	 *		((interval * new_res) + htp->hrt_res - 1) / htp->hrt_res
233 		drem = htp->hrt_res / 2;
236 		drem = htp->hrt_res - 1;
240 	dfrom_res = htp->hrt_res;
251 		htp->hrt_res = new_res;
252 		htp->hrt_rem = (int)quot;