[PATCH v2 2/6] units: Add 32- and 64-bit signed values of π

[Andy Shevchenko]

There are a few drivers that want to have these values, and
one more known to come soon. Let's define the values for them.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
 include/linux/units.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/linux/units.h b/include/linux/units.h
index f626e212d4ca..5b3293bce04c 100644
--- a/include/linux/units.h
+++ b/include/linux/units.h
@@ -21,6 +21,12 @@
 #define PICO	1000000000000ULL
 #define FEMTO	1000000000000000ULL
 
+/* Value of π * 10⁸ (fits s32 or signed int) */
+#define PI	314159265
+
+/* Value of π * 10¹⁸ (fits s64 or signed long long) */
+#define PI_LL	3141592653589793238LL
+
 /* Hz based multipliers */
 #define NANOHZ_PER_HZ		1000000000UL
 #define MICROHZ_PER_HZ		1000000UL
-- 
2.50.1