plugin_dispatch_multivalue: Submit NAN when computing percantage of an empty set.

diff --git a/src/daemon/plugin.c b/src/daemon/plugin.c
index 1deabba..a8e6ca1 100644 (file)
--- a/src/daemon/plugin.c
+++ b/src/daemon/plugin.c
@@ -2273,7 +2273,7 @@ int plugin_dispatch_multivalue (value_list_t const *template, /* {{{ */
                case DS_TYPE_GAUGE:
                        vl->values[0].gauge = va_arg (ap, gauge_t);
                        if (store_percentage)
-                               vl->values[0].gauge *= sum ? (100.0 / sum) : 0;
+                               vl->values[0].gauge *= sum ? (100.0 / sum) : NAN;
                        break;
                case DS_TYPE_ABSOLUTE:
                        vl->values[0].absolute = va_arg (ap, absolute_t);