ako 0.0.3

Ako is a Rust crate that offers a practical and human-friendly approach to creating, manipulating, formatting and converting dates, times and timestamps.
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

mod delta_t;
mod earth;
mod julian;
mod nutation;
mod solar;
pub mod solstice;

pub use delta_t::delta_t;
pub use julian::{from_julian_day, to_julian_day, to_julian_year};

struct SphericalCoords {
    /// Ecliptic longitude or celestial longitude measures the angular distance of
    /// an object along the ecliptic from the primary direction
    pub longitude: f64,

    /// Ecliptic latitude or celestial latitude measures the angular distance of an object from
    /// the ecliptic towards the north (positive) or south (negative) ecliptic pole.
    pub latitude: f64,

    /// Distance is also necessary for a complete spherical position.
    pub distance: f64,
}

// evaluate a polynominal of arbitrary rank using Horner's method
fn eval_polynomial(x: f64, coefficients: &[f64]) -> f64 {
    coefficients
        .iter()
        .copied()
        .rev()
        .fold(0.0, |val, k| val.mul_add(x, k))
}