[PATCH v5 3/5] units: add PERCENT and BASIS_POINTS macros
From: Jonathan Santos <hidden>
Date: 2025-12-17 12:43:32
Also in:
linux-iio, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
Add macros for percentage related units, with basis points defined as 1/100th of a percent. Basis points are commonly used in finance and engineering to express small percentage changes with precision. Signed-off-by: Jonathan Santos <redacted> --- v5 Changes: * Included PERCENT macro along with BASIS_POINTS. * Adjusted commit description and comment in the code to add more context and examples. v4 Changes: * New patch. --- include/linux/units.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/include/linux/units.h b/include/linux/units.h
index 00e15de33eca..9c2fbcf04c81 100644
--- a/include/linux/units.h
+++ b/include/linux/units.h@@ -21,6 +21,20 @@ #define PICO 1000000000000ULL #define FEMTO 1000000000000000ULL +/* + * Percentage and basis point units + * + * Basis points are 1/100th of a percent (1/100), commonly used in finance, + * engineering or other applications that require precise percentage + * calculations. + * + * Examples: + * 100% = 10000 basis points = BASIS_POINTS + * 1% = 100 basis points = PERCENT + */ +#define PERCENT 100UL +#define BASIS_POINTS 10000UL + #define NANOHZ_PER_HZ 1000000000UL #define MICROHZ_PER_HZ 1000000UL #define MILLIHZ_PER_HZ 1000UL
--
2.34.1