pathplan dist_n: rephrase an open coded 'hypot'

diff --git a/lib/pathplan/route.c b/lib/pathplan/route.c
index f41a0d610b595a9d86e53ac27b7aeccd12b2b80b..7857e2c9b37251d6df4fee94fda4a56e97112d0d 100644 (file)
--- a/lib/pathplan/route.c
+++ b/lib/pathplan/route.c
@@ -196,9 +196,7 @@ static double dist_n(Ppoint_t * p, int n)
 
     rv = 0.0;
     for (i = 1; i < n; i++) {
-       rv +=
-           sqrt((p[i].x - p[i - 1].x) * (p[i].x - p[i - 1].x) +
-                (p[i].y - p[i - 1].y) * (p[i].y - p[i - 1].y));
+       rv += hypot(p[i].x - p[i - 1].x, p[i].y - p[i - 1].y);
     }
     return rv;
 }