diff options
| author |   Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2021-07-12 17:20:25 +0300 |
|---|---|---|
| committer |   Wolfram Sang <wsa@kernel.org> | 2021-08-11 16:43:10 +0200 |
| commit | 26471d4a6cf8d5d0bd0fb55c7169de7d67cc703a (patch) | |
| tree | df263515620d991145dac7052f3bd627d816eb04 /include/linux/units.h | |
| parent | i2c: at91: mark PM ops as __maybe unused (diff) | |
| download | wireguard-linux-26471d4a6cf8d5d0bd0fb55c7169de7d67cc703a.tar.xz wireguard-linux-26471d4a6cf8d5d0bd0fb55c7169de7d67cc703a.zip | |
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@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'include/linux/units.h')
| -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 dcc30a53fa93..4a25e0cc8fb3 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 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 |