/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_UNITS_H#define _LINUX_UNITS_H#include <linux/bits.h>#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 NANOHZ_PER_HZ 1000000000UL#define MICROHZ_PER_HZ 1000000UL#define MILLIHZ_PER_HZ 1000UL#define HZ_PER_KHZ 1000UL#define HZ_PER_MHZ 1000000UL#define KHZ_PER_MHZ 1000UL#define KHZ_PER_GHZ 1000000UL#define MILLIWATT_PER_WATT 1000UL#define MICROWATT_PER_MILLIWATT 1000UL#define MICROWATT_PER_WATT 1000000UL#define BYTES_PER_KBIT (KILO / BITS_PER_BYTE)#define BYTES_PER_MBIT (MEGA / BITS_PER_BYTE)#define BYTES_PER_GBIT (GIGA / BITS_PER_BYTE)#define ABSOLUTE_ZERO_MILLICELSIUS -273150static inline long milli_kelvin_to_millicelsius(long t)return t + ABSOLUTE_ZERO_MILLICELSIUS;static inline long millicelsius_to_milli_kelvin(long t)return t - ABSOLUTE_ZERO_MILLICELSIUS;#define MILLIDEGREE_PER_DEGREE 1000#define MILLIDEGREE_PER_DECIDEGREE 100static inline long kelvin_to_millicelsius(long t)return milli_kelvin_to_millicelsius(t * MILLIDEGREE_PER_DEGREE);static inline long millicelsius_to_kelvin(long t)return DIV_ROUND_CLOSEST(t, MILLIDEGREE_PER_DEGREE);static inline long deci_kelvin_to_celsius(long t)return DIV_ROUND_CLOSEST(t, MILLIDEGREE_PER_DEGREE);static inline long celsius_to_deci_kelvin(long t)return DIV_ROUND_CLOSEST(t, MILLIDEGREE_PER_DECIDEGREE);/** * deci_kelvin_to_millicelsius_with_offset - convert Kelvin to Celsius * @t: temperature value in decidegrees Kelvin * @offset: difference between Kelvin and Celsius in millidegrees * * Return: temperature value in millidegrees Celsius static inline long deci_kelvin_to_millicelsius_with_offset(long t, long offset)return t * MILLIDEGREE_PER_DECIDEGREE - offset;static inline long deci_kelvin_to_millicelsius(long t)return milli_kelvin_to_millicelsius(t * MILLIDEGREE_PER_DECIDEGREE);static inline long millicelsius_to_deci_kelvin(long t)return DIV_ROUND_CLOSEST(t, MILLIDEGREE_PER_DECIDEGREE);static inline long kelvin_to_celsius(long t)return t + DIV_ROUND_CLOSEST(ABSOLUTE_ZERO_MILLICELSIUS,static inline long celsius_to_kelvin(long t)return t - DIV_ROUND_CLOSEST(ABSOLUTE_ZERO_MILLICELSIUS,#endif /* _LINUX_UNITS_H */ quality 100%
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