symbolica 2.2.0

A blazing fast computer algebra system
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

use ahash::HashMap;
use symbolica::prelude::*;

fn main() {
    let _ = symbol!(
        "g",
        eval = EvaluationInfo::new()
            .register(|x: &[f64]| x[0] + 2.0)
            .register(|x: &[Complex<f64>]| x[0] + 2.0)
    );

    let a = parse!("v1*cos(v1) + f1(1)^2 + g(v1)");

    let mut const_map = HashMap::default();
    const_map.insert(parse!("v1"), 6.);
    const_map.insert(parse!("f1(1)"), 7.);

    let r = a.evaluate(&const_map).unwrap();
    assert_eq!(r, 62.761021719902196);

    let expr = parse!("2x");
    let x = parse!("x");
    let mut const_map = HashMap::default();
    const_map.insert(x.clone(), Float::with_val(200, 3));
    let result = expr.evaluate_with_prec(&const_map, 200).unwrap();
    assert_eq!(result, Float::with_val(200, 6));
}