diff --git a/src/utils/array.h b/src/utils/array.h
index 65b7fd7..be28f4e 100644
--- a/src/utils/array.h
+++ b/src/utils/array.h
@@ -3,4 +3,9 @@
 
 #define ARRAY_LENGTH(array) sizeof(array)/sizeof(array[0])
 
+static long mapValueToRange(long x, long in_min, long in_max, long out_min, long out_max)
+{
+    return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
+}
+
 #endif
\ No newline at end of file