diman 0.5.1

Zero-cost compile-time dimensional analysis.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48

#[cfg(feature = "f32")]
pub(crate) fn assert_is_close_f32<const U: crate::example_system::Dimension>(
    x: crate::example_system::Quantity<f32, U>,
    y: crate::example_system::Quantity<f32, U>,
) {
    assert!(
        (x - y).abs().value_unchecked() < f32::EPSILON,
        "{} {}",
        x.value_unchecked(),
        y.value_unchecked()
    )
}

#[cfg(feature = "f64")]
pub(crate) fn assert_is_close_f64<const U: crate::example_system::Dimension>(
    x: crate::example_system::Quantity<f64, U>,
    y: crate::example_system::Quantity<f64, U>,
) {
    assert!(
        (x - y).abs().value_unchecked() < f64::EPSILON,
        "{} {}",
        x.value_unchecked(),
        y.value_unchecked()
    )
}

#[cfg(feature = "f32")]
pub(crate) fn assert_is_close_float_f32(x: f32, y: f32) {
    assert!((x - y).abs() < f32::EPSILON, "{} {}", x, y)
}

#[cfg(feature = "f64")]
pub(crate) fn assert_is_close_float_f64(x: f64, y: f64) {
    assert!((x - y).abs() < f64::EPSILON, "{} {}", x, y)
}

// These help with what would otherwise require lots of
// type annotations for the float which are awkward to do
// because we can't write 1.0f64 or similar literals here

#[macro_export]
macro_rules! make_annotated_unit_constructor {
    ($unit: ident, $quantity: ty, $float_name: ident) => {
        fn $unit(x: $float_name) -> $quantity {
            x * units::$unit
        }
    };
}