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-rw-r--r--Tachometer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Tachometer.c b/Tachometer.c
index 45122c95..c1b044d7 100644
--- a/Tachometer.c
+++ b/Tachometer.c
@@ -19,7 +19,7 @@
#include <math.h>
#include "config.h" /* must define UNUSED */
-#define D2R (3.14159265358979323846 / 180.0) /* Degrees to radians */
+#define D2R 0.0174532925199432957692369076848861271L /* radians = pi/180 */
/****************************************************************
*