| /* |
| * Copyright 2017, Data61 |
| * Commonwealth Scientific and Industrial Research Organisation (CSIRO) |
| * ABN 41 687 119 230. |
| * |
| * This software may be distributed and modified according to the terms of |
| * the BSD 2-Clause license. Note that NO WARRANTY is provided. |
| * See "LICENSE_BSD2.txt" for details. |
| * |
| * @TAG(DATA61_BSD) |
| */ |
| |
| #pragma once |
| |
| typedef int millicelcius_t; |
| typedef unsigned int millikelvin_t; |
| typedef int celcius_t; |
| typedef unsigned int kelvin_t; |
| |
| /* The canonical temperature unit is millikelvin */ |
| typedef millikelvin_t temperature_t; |
| |
| /* Temperature Conversions */ |
| #define MILLIKELVIN_OFFSET 273150 |
| |
| #define MILLIKELVIN_IN_KELVIN 1000 |
| #define MILLICELCIUS_IN_CELCIUS 1000 |
| |
| /* Coverts from a millicelcius to millikelvin |
| * Behaviour when given a value less than -237150 (absolute zero) |
| * is undefined. |
| */ |
| static inline millikelvin_t millicelcius_to_millikelvin(millicelcius_t mc) { |
| return mc + MILLIKELVIN_OFFSET; |
| } |
| |
| /* Converts from millikelvin to millicelcius */ |
| static inline millicelcius_t millikelvin_to_millicelcius(millikelvin_t mk) { |
| return mk - MILLIKELVIN_OFFSET; |
| } |
| |
| /* Converts from celcius to kelvin */ |
| static inline kelvin_t celcius_to_kelvin(celcius_t c) { |
| return millicelcius_to_millikelvin(c * MILLICELCIUS_IN_CELCIUS) / MILLIKELVIN_IN_KELVIN; |
| } |
| |
| /* Converts from kelvin to celcius */ |
| static inline celcius_t kelvin_to_celcius(kelvin_t k) { |
| return millikelvin_to_millicelcius(k * MILLIKELVIN_IN_KELVIN) / MILLICELCIUS_IN_CELCIUS; |
| } |
