diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2021-07-12 17:20:25 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-01 08:23:23 +0100 |
| commit | 8ebc2efcb6d6731c12a3c3b18f9c2d17b651e888 (patch) | |
| tree | a0ff3b6c9b0748043f9d5a9da58dc7a5ba7fbebb /include | |
| parent | 974aaf11804f658aad8b03e3950e41c80efd04a8 (diff) | |
units: Add SI metric prefix definitions
[ Upstream commit 26471d4a6cf8d5d0bd0fb55c7169de7d67cc703a ]
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@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Stable-dep-of: c8c37bc51451 ("i2c: designware: use casting of u64 in clock multiplication to avoid overflow")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/units.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/units.h b/include/linux/units.h index 92c234e71cab..3457179f7116 100644 --- a/include/linux/units.h +++ b/include/linux/units.h @@ -4,6 +4,22 @@ #include <linux/kernel.h> +/* Metric prefixes in accordance with Système international (d'unités) */ +#define PETA 1000000000000000ULL +#define TERA 1000000000000ULL +#define GIGA 1000000000UL +#define MEGA 1000000UL +#define KILO 1000UL +#define HECTO 100UL +#define DECA 10UL +#define DECI 10UL +#define CENTI 100UL +#define MILLI 1000UL +#define MICRO 1000000UL +#define NANO 1000000000UL +#define PICO 1000000000000ULL +#define FEMTO 1000000000000000ULL + #define MILLIWATT_PER_WATT 1000L #define MICROWATT_PER_MILLIWATT 1000L #define MICROWATT_PER_WATT 1000000L |