D42114.diff
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	diff --git a/sbin/ping/ping.c b/sbin/ping/ping.c
	--- a/sbin/ping/ping.c
	+++ b/sbin/ping/ping.c
	@@ -1522,10 +1522,10 @@
	if (nreceived && timing) {
	double n = nreceived + nrepeats;
	double avg = tsum / n;
	- double vari = tsumsq / n - avg * avg;
	+ double stddev = sqrt(fmax(0, tsumsq / n - avg * avg));
	(void)printf(
	"round-trip min/avg/max/stddev = %.3f/%.3f/%.3f/%.3f ms\n",
	- tmin, avg, tmax, sqrt(vari));
	+ tmin, avg, tmax, stddev);
	}

	if (nreceived)
	diff --git a/sbin/ping/ping6.c b/sbin/ping/ping6.c
	--- a/sbin/ping/ping6.c
	+++ b/sbin/ping/ping6.c
	@@ -2349,10 +2349,10 @@
	/* Only display average to microseconds */
	double num = nreceived + nrepeats;
	double avg = tsum / num;
	- double dev = sqrt(tsumsq / num - avg * avg);
	+ double stddev = sqrt(fmax(0, tsumsq / num - avg * avg));
	(void)printf(
	"round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n",
	- tmin, avg, tmax, dev);
	+ tmin, avg, tmax, stddev);
	(void)fflush(stdout);
	}
	(void)fflush(stdout);