From 5a0c4c79e72a1b5265c01a276136e0ea85d7e519 Mon Sep 17 00:00:00 2001
From: Florian Forster <octo@collectd.org>
Date: Mon, 29 Jan 2024 14:15:24 +0100
Subject: [PATCH] src/daemon/utils_cache.c: Add comment about initializing
 `ce->values_gauge` for non-gauge types.

---
 src/daemon/utils_cache.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/daemon/utils_cache.c b/src/daemon/utils_cache.c
index 0045464e1..ba4f1080d 100644
--- a/src/daemon/utils_cache.c
+++ b/src/daemon/utils_cache.c
@@ -151,6 +151,8 @@ static int uc_insert(metric_t const *m, char const *key) {
   switch (m->family->type) {
   case DS_TYPE_COUNTER:
   case DS_TYPE_DERIVE:
+    // Non-gauge types will store the rate in values_gauge when the second data
+    // point is available. Initially, NAN signifies "not enough data".
     ce->values_gauge = NAN;
     break;
 
-- 
2.47.2