brahe 1.5.2

Brahe is a modern satellite dynamics library for research and engineering applications designed to be easy-to-learn, high-performance, and quick-to-deploy. The north-star of the development is enabling users to solve meaningful problems and answer questions quickly, easily, and correctly.
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
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131

#![allow(missing_docs)]

use std::hint::black_box;

use criterion::Criterion;

#[cfg(feature = "dhat-heap")]
#[global_allocator]
static ALLOC: dhat::Alloc = dhat::Alloc;

use brahe::eop::{EOPExtrapolation, EarthOrientationProvider, FileEOPProvider};
use brahe::space_weather::{FileSpaceWeatherProvider, SpaceWeatherProvider};

fn bench_eop_ut1_utc_repeated(c: &mut Criterion) {
    let eop = FileEOPProvider::from_default_standard(true, EOPExtrapolation::Hold).unwrap();
    let mjd = 59580.0; // 2022-01-01

    c.bench_function("eop_get_ut1_utc_repeated_same_mjd", |b| {
        b.iter(|| eop.get_ut1_utc(black_box(mjd)).unwrap())
    });
}

fn bench_eop_ut1_utc_sequential(c: &mut Criterion) {
    let eop = FileEOPProvider::from_default_standard(true, EOPExtrapolation::Hold).unwrap();
    let mjd_min = eop.mjd_min();
    let mjd_max = eop.mjd_max();
    let range = mjd_max - mjd_min;

    c.bench_function("eop_get_ut1_utc_sequential_scan", |b| {
        let mut i: u64 = 0;
        b.iter(|| {
            let frac = (i as f64) / 10000.0;
            let mjd = mjd_min + (frac % 1.0) * range;
            i += 1;
            eop.get_ut1_utc(black_box(mjd)).unwrap()
        })
    });
}

fn bench_eop_get_eop_repeated(c: &mut Criterion) {
    let eop = FileEOPProvider::from_default_standard(true, EOPExtrapolation::Hold).unwrap();
    let mjd = 59580.0;

    c.bench_function("eop_get_eop_repeated_same_mjd", |b| {
        b.iter(|| eop.get_eop(black_box(mjd)).unwrap())
    });
}

fn bench_eop_get_eop_sequential(c: &mut Criterion) {
    let eop = FileEOPProvider::from_default_standard(true, EOPExtrapolation::Hold).unwrap();
    let mjd_min = eop.mjd_min();
    let mjd_max = eop.mjd_max();
    let range = mjd_max - mjd_min;

    c.bench_function("eop_get_eop_sequential_scan", |b| {
        let mut i: u64 = 0;
        b.iter(|| {
            let frac = (i as f64) / 10000.0;
            let mjd = mjd_min + (frac % 1.0) * range;
            i += 1;
            eop.get_eop(black_box(mjd)).unwrap()
        })
    });
}

fn bench_eop_frame_transform_pattern(c: &mut Criterion) {
    let eop = FileEOPProvider::from_default_standard(true, EOPExtrapolation::Hold).unwrap();
    let mjd = 59580.0;

    c.bench_function("eop_frame_transform_pattern", |b| {
        b.iter(|| {
            let mjd = black_box(mjd);
            let _dxdy = eop.get_dxdy(mjd).unwrap();
            let _pm = eop.get_pm(mjd).unwrap();
            let _ut1_utc = eop.get_ut1_utc(mjd).unwrap();
        })
    });
}

fn bench_sw_kp_repeated(c: &mut Criterion) {
    let sw = FileSpaceWeatherProvider::from_default_file().unwrap();
    let mjd = 60000.0;

    c.bench_function("sw_get_kp_repeated_same_mjd", |b| {
        b.iter(|| sw.get_kp(black_box(mjd)).unwrap())
    });
}

fn bench_sw_kp_sequential(c: &mut Criterion) {
    let sw = FileSpaceWeatherProvider::from_default_file().unwrap();
    let mjd_min = sw.mjd_min();
    let mjd_last_obs = sw.mjd_last_observed();
    let range = mjd_last_obs - mjd_min;

    c.bench_function("sw_get_kp_sequential_scan", |b| {
        let mut i: u64 = 0;
        b.iter(|| {
            let frac = (i as f64) / 10000.0;
            let mjd = mjd_min + (frac % 1.0) * range;
            i += 1;
            sw.get_kp(black_box(mjd)).unwrap()
        })
    });
}

fn bench_sw_f107_repeated(c: &mut Criterion) {
    let sw = FileSpaceWeatherProvider::from_default_file().unwrap();
    let mjd = 60000.0;

    c.bench_function("sw_get_f107_observed_repeated", |b| {
        b.iter(|| sw.get_f107_observed(black_box(mjd)).unwrap())
    });
}

// Custom main instead of criterion_main! so the dhat profiler runs when enabled.
// Run with --features dhat-heap to profile memory allocations.
fn main() {
    #[cfg(feature = "dhat-heap")]
    let _profiler = dhat::Profiler::new_heap();

    let mut c = criterion::Criterion::default().configure_from_args();
    bench_eop_ut1_utc_repeated(&mut c);
    bench_eop_ut1_utc_sequential(&mut c);
    bench_eop_get_eop_repeated(&mut c);
    bench_eop_get_eop_sequential(&mut c);
    bench_eop_frame_transform_pattern(&mut c);
    bench_sw_kp_repeated(&mut c);
    bench_sw_kp_sequential(&mut c);
    bench_sw_f107_repeated(&mut c);
    c.final_summary();
}