From 47e2cefe02dffe00369e5630eb1e3f54174f20af Mon Sep 17 00:00:00 2001
From: Benny Baumann <BenBE@geshi.org>
Date: Mon, 7 Sep 2020 11:52:42 +0200
Subject: Update battery API to use NAN on error

---
 unsupported/Battery.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'unsupported')

diff --git a/unsupported/Battery.c b/unsupported/Battery.c
index 080cf540..121d2e49 100644
--- a/unsupported/Battery.c
+++ b/unsupported/Battery.c
@@ -1,7 +1,8 @@
+#include <math.h>
 
 #include "BatteryMeter.h"
 
 void Battery_getData(double* level, ACPresence* isOnAC) {
-   *level = -1;
+   *level = NAN;
    *isOnAC = AC_ERROR;
 }
-- 
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