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-rw-r--r--n/avr/modules/utils/utils.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/n/avr/modules/utils/utils.h b/n/avr/modules/utils/utils.h
index 535036a..5a58f4b 100644
--- a/n/avr/modules/utils/utils.h
+++ b/n/avr/modules/utils/utils.h
@@ -67,4 +67,7 @@ utils_delay_ms (double ms)
v = max; \
} while (0)
+/** Absolute value. */
+#define UTILS_ABS(v) ((v) > 0 ? (v) : -(v))
+
#endif /* utils_h */