emath/
numeric.rs

1/// Implemented for all builtin numeric types
2pub trait Numeric: Clone + Copy + PartialEq + PartialOrd + 'static {
3    /// Is this an integer type?
4    const INTEGRAL: bool;
5
6    /// Smallest finite value
7    const MIN: Self;
8
9    /// Largest finite value
10    const MAX: Self;
11
12    fn to_f64(self) -> f64;
13
14    fn from_f64(num: f64) -> Self;
15}
16
17macro_rules! impl_numeric_float {
18    ($t: ident) => {
19        impl Numeric for $t {
20            const INTEGRAL: bool = false;
21            const MIN: Self = $t::MIN;
22            const MAX: Self = $t::MAX;
23
24            #[inline(always)]
25            fn to_f64(self) -> f64 {
26                #[allow(trivial_numeric_casts)]
27                {
28                    self as f64
29                }
30            }
31
32            #[inline(always)]
33            fn from_f64(num: f64) -> Self {
34                #[allow(trivial_numeric_casts)]
35                {
36                    num as Self
37                }
38            }
39        }
40    };
41}
42
43macro_rules! impl_numeric_integer {
44    ($t: ident) => {
45        impl Numeric for $t {
46            const INTEGRAL: bool = true;
47            const MIN: Self = $t::MIN;
48            const MAX: Self = $t::MAX;
49
50            #[inline(always)]
51            fn to_f64(self) -> f64 {
52                self as f64
53            }
54
55            #[inline(always)]
56            fn from_f64(num: f64) -> Self {
57                num as Self
58            }
59        }
60    };
61}
62
63macro_rules! impl_numeric_non_zero_unsigned {
64    ($t: path) => {
65        impl Numeric for $t {
66            const INTEGRAL: bool = true;
67            const MIN: Self = Self::MIN;
68            const MAX: Self = Self::MAX;
69
70            #[inline(always)]
71            fn to_f64(self) -> f64 {
72                self.get() as f64
73            }
74
75            #[inline(always)]
76            fn from_f64(num: f64) -> Self {
77                Self::new(num.round().max(1.0) as _).unwrap_or(Self::MIN)
78            }
79        }
80    };
81}
82
83impl_numeric_float!(f32);
84impl_numeric_float!(f64);
85impl_numeric_integer!(i8);
86impl_numeric_integer!(u8);
87impl_numeric_integer!(i16);
88impl_numeric_integer!(u16);
89impl_numeric_integer!(i32);
90impl_numeric_integer!(u32);
91impl_numeric_integer!(i64);
92impl_numeric_integer!(u64);
93impl_numeric_integer!(isize);
94impl_numeric_integer!(usize);
95impl_numeric_non_zero_unsigned!(std::num::NonZeroU8);
96impl_numeric_non_zero_unsigned!(std::num::NonZeroU16);
97impl_numeric_non_zero_unsigned!(std::num::NonZeroU32);
98impl_numeric_non_zero_unsigned!(std::num::NonZeroU64);
99impl_numeric_non_zero_unsigned!(std::num::NonZeroU128);
100impl_numeric_non_zero_unsigned!(std::num::NonZeroUsize);
emath/numeric.rs

emath/
numeric.rs
