Make swap() a proper function

facchinm · web-flow · commit c3bddf0d8856 · 2019-09-17T17:35:29.000+02:00
Partial port of arduino/Arduino#2434
diff --git a/src/utility/Adafruit_GFX.h b/src/utility/Adafruit_GFX.h
@@ -25,7 +25,7 @@
 
 //#include "PImage.h"
 
-#define swap(a, b) { int16_t t = a; a = b; b = t; }
+inline void swap(int16_t &a, int16_t &b) { int16_t t = a; a = b; b = t; }
 
 /* TODO
 enum RectMode {
