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Message-Id: <20210603155910.35530-1-andriy.shevchenko@linux.intel.com>
Date: Thu, 3 Jun 2021 18:59:08 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
Mika Westerberg <mika.westerberg@...ux.intel.com>,
wsas@...nel.org
Subject: [PATCH v1 1/3] units: Add SI metric prefix definitions
Sometimes it's useful to have well-defined SI metric prefix to be used
to self-describe the formulas or equations.
List most popular ones in the units.h.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
include/linux/units.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/include/linux/units.h b/include/linux/units.h
index dcc30a53fa93..7366fcd45ec2 100644
--- a/include/linux/units.h
+++ b/include/linux/units.h
@@ -4,6 +4,22 @@
#include <linux/math.h>
+/* Metric prefixes in accordance with Système international (d'unités) */
+#define PETA 1000000000000000LL
+#define TERA 1000000000000LL
+#define GIGA 1000000000L
+#define MEGA 1000000L
+#define KILO 1000L
+#define HECTO 100L
+#define DECA 10L
+#define DECI 10L
+#define CENTI 100L
+#define MILLI 1000L
+#define MICRO 1000000L
+#define NANO 1000000000L
+#define PICO 1000000000000LL
+#define FEMTO 1000000000000000LL
+
#define MILLIWATT_PER_WATT 1000L
#define MICROWATT_PER_MILLIWATT 1000L
#define MICROWATT_PER_WATT 1000000L
--
2.30.2
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