Fix round() macro conflict between math.h and wiring.h
The AVR LIBC v1.7.1 and greater has their own definition
of round().
Change-Id: I6b1578a7df4c47c6301fc24d91067c2198f035ff
Signed-off-by: Adam Hampson <ahampson@google.com>
diff --git a/hardware/arduino/cores/arduino/wiring.h b/hardware/arduino/cores/arduino/wiring.h
index e29959b..c022064 100755
--- a/hardware/arduino/cores/arduino/wiring.h
+++ b/hardware/arduino/cores/arduino/wiring.h
@@ -76,7 +76,9 @@
#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)))
+#if __AVR_LIBC_VERSION__ < 10701UL
#define round(x) ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))
+#endif
#define radians(deg) ((deg)*DEG_TO_RAD)
#define degrees(rad) ((rad)*RAD_TO_DEG)
#define sq(x) ((x)*(x))
