X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=src%2Frrd_graph.c;h=323fec6dcfc1ba3d0d79c455961915e8f16e9ba0;hp=1ea457b2c27e909ad903c629e5e531eef56cc369;hb=8d46034bf5b28b3c5ec94baf7d526c6a3a95fb8b;hpb=4d3bdc2fb368a91d2cae832040c6e632fb553bde

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index 1ea457b..323fec6 100644
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -4867,7 +4867,7 @@ int vdef_calc(
             array[step] = data[step * src->ds_cnt];
         }
         qsort(array, step, sizeof(double), vdef_percent_compar);
-        field = (steps - 1) * dst->vf.param / 100;
+        field = round((dst->vf.param * (double)(steps - 1)) / 100.0);
         dst->vf.val = array[field];
         dst->vf.when = 0;   /* no time component */
         free(array);
@@ -4900,7 +4900,7 @@ int vdef_calc(
             }
         }
         qsort(array, nancount, sizeof(double), vdef_percent_compar);
-        field = (nancount - 1) * dst->vf.param / 100;
+        field = round( dst->vf.param * (double)(nancount - 1) / 100.0);
         dst->vf.val = array[field];
         dst->vf.when = 0;   /* no time component */
         free(array);