libhaystack/haystack/units/
unit_dimension.rs

1// Copyright (C) 2020 - 2022, J2 Innovations
2
3//! Haystack Unit Dimension type
4
5use std::ops::{Add, Sub};
6
7///
8/// A unit dimension.
9///
10#[derive(Debug, PartialEq, Eq, Ord, PartialOrd, Hash, Default, Clone, Copy)]
11pub struct UnitDimensions {
12    /// Kilograms
13    pub kg: i8,
14    /// Meters
15    pub m: i8,
16    /// Seconds
17    pub sec: i8,
18    /// Kelvins
19    pub k: i8,
20    /// Amperes
21    pub a: i8,
22    /// Mols
23    pub mol: i8,
24    /// Candelas
25    pub cd: i8,
26}
27
28/// Addition operator
29impl Add for UnitDimensions {
30    type Output = Self;
31
32    fn add(self, other: Self) -> Self::Output {
33        Self {
34            kg: self.kg + other.kg,
35            m: self.m + other.m,
36            sec: self.sec + other.sec,
37            k: self.k + other.k,
38            a: self.a + other.a,
39            mol: self.mol + other.mol,
40            cd: self.cd + other.cd,
41        }
42    }
43}
44
45/// Subtraction operator
46impl Sub for UnitDimensions {
47    type Output = Self;
48
49    fn sub(self, other: Self) -> Self::Output {
50        Self {
51            kg: self.kg - other.kg,
52            m: self.m - other.m,
53            sec: self.sec - other.sec,
54            k: self.k - other.k,
55            a: self.a - other.a,
56            mol: self.mol - other.mol,
57            cd: self.cd - other.cd,
58        }
59    }
60}
61
62#[cfg(test)]
63mod test {
64    use super::UnitDimensions;
65    #[test]
66    fn test_add() {
67        let dim1 = UnitDimensions {
68            kg: 1,
69            m: 1,
70            sec: 1,
71            k: 1,
72            a: 1,
73            mol: 1,
74            cd: 1,
75        };
76        let dim2 = UnitDimensions {
77            kg: 2,
78            m: 2,
79            sec: 2,
80            k: 2,
81            a: 2,
82            mol: 2,
83            cd: 2,
84        };
85
86        assert_eq!(
87            dim1 + dim2,
88            UnitDimensions {
89                kg: 3,
90                m: 3,
91                sec: 3,
92                k: 3,
93                a: 3,
94                mol: 3,
95                cd: 3
96            }
97        )
98    }
99
100    #[test]
101    fn test_sub() {
102        let dim1 = UnitDimensions {
103            kg: 3,
104            m: 3,
105            sec: 3,
106            k: 3,
107            a: 3,
108            mol: 3,
109            cd: 3,
110        };
111        let dim2 = UnitDimensions {
112            kg: 2,
113            m: 2,
114            sec: 2,
115            k: 2,
116            a: 2,
117            mol: 2,
118            cd: 2,
119        };
120
121        assert_eq!(
122            dim1 - dim2,
123            UnitDimensions {
124                kg: 1,
125                m: 1,
126                sec: 1,
127                k: 1,
128                a: 1,
129                mol: 1,
130                cd: 1,
131            }
132        )
133    }
134}
libhaystack/haystack/units/unit_dimension.rs

libhaystack/haystack/units/
unit_dimension.rs
