Better macro

MarlinFirmware · Nov 21, 2020 · 12a9d45 · 12a9d45
1 parent 8f953fa
commit 12a9d45
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/Marlin/src/gcode/parser.h b/Marlin/src/gcode/parser.h
@@ -301,8 +301,8 @@ class GCodeParser {
     // Init linear units by constructor
     GCodeParser() { set_input_linear_units(LINEARUNIT_MM); }
 
-    #define IN_TO_MM(in) (in * 25.4f)
-    #define MM_TO_IN(mm) (mm / 25.4f)
+    #define IN_TO_MM(I) ((I) * 25.4f)
+    #define MM_TO_IN(M) ((M) / 25.4f)
 
     static inline void set_input_linear_units(const LinearUnit units) {
       switch (units) {