diff --git a/cores/arduino/Arduino.h b/cores/arduino/Arduino.h
index 91eeb16bc..00e0582f7 100644
--- a/cores/arduino/Arduino.h
+++ b/cores/arduino/Arduino.h
@@ -89,14 +89,40 @@ void yield(void);
#undef abs
#endif
-#define min(a,b) ((a)<(b)?(a):(b))
-#define max(a,b) ((a)>(b)?(a):(b))
-#define abs(x) ((x)>0?(x):-(x))
-#define constrain(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt)))
-#define round(x) ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))
+#ifdef __GNUC__
+ #define max(a,b) \
+ ({ typeof (a) _a = (a); \
+ typeof (b) _b = (b); \
+ _a > _b ? _a : _b; })
+ #define min(a,b) \
+ ({ typeof (a) _a = (a); \
+ typeof (b) _b = (b); \
+ _a < _b ? _a : _b; })
+ #define abs(a) \
+ ({ typeof (a) _a = (a); \
+ _a > 0 ? _a : _a * -1; })
+ #define constrain(amt, low, high) \
+ ({ typeof (amt) _amt = (amt); \
+ typeof (low) _low = (low); \
+ typeof (high) _high = (high); \
+ _amt < _low ? _low : _amt > _high ? _high : _amt; })
+ #define round(x) \
+ ({ typeof (x) _x = (x); \
+ ((_x)>=0?(long)((_x)+0.5):(long)((_x)-0.5)) })
+ #define sq(x) \
+ ({ typeof (x) _x = (x); \
+ _x * _x })
+#else
+ #define min(a,b) ((a)<(b)?(a):(b))
+ #define max(a,b) ((a)>(b)?(a):(b))
+ #define abs(x) ((x)>0?(x):-(x))
+ #define constrain(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt)))
+ #define round(x) ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))
+ #define sq(x) ((x)*(x))
+#endif
+
#define radians(deg) ((deg)*DEG_TO_RAD)
#define degrees(rad) ((rad)*RAD_TO_DEG)
-#define sq(x) ((x)*(x))
#define interrupts() sei()
#define noInterrupts() cli()
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