https://github.com/philippeitis/rustnomial

Rust library for high-performance polynomial operations
https://github.com/philippeitis/rustnomial

Last synced: 9 days ago
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Rust library for high-performance polynomial operations

• Host: GitHub
• URL: https://github.com/philippeitis/rustnomial
• Owner: philippeitis
• License: mit
• Created: 2020-05-19T22:36:17.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2022-12-26T20:00:55.000Z (almost 2 years ago)
• Last Synced: 2024-10-13T21:09:31.783Z (23 days ago)
• Language: Rust
• Homepage:
• Size: 219 KB
• Stars: 7
• Watchers: 2
• Forks: 3
• Open Issues: 5
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

        
# rustnomial

This crate provides utilities for operating on polynomials, including:

- Parsing polynomials from strings, and creating strings from polynomials

- Math operations with polynomials

- Integration and derivation of polynomials

- Finding polynomial roots

# Examples

- Parsing polynomials from / to strings:

```rust

use std::str::FromStr;

use rustnomial::{GenericPolynomial, Polynomial};

fn main() {

    let poly = Polynomial::::from_str("1+x^2-3+11x").unwrap();

    // x^2 + 11x - 2

    println!("{}", poly);

}

```

- Integration

```rust

use rustnomial::integral;

fn main() {

    let poly = integral!(5., 2., 0.);

    // 1.6666666666666667x^3 + x^2 + C

    println!("{}", poly);

    // 2.666666666666667

    println!("{}", poly.eval(0., 1.));

}

```

- Derivation

```rust

use rustnomial::derivative;

fn main() {

    let poly = derivative!(5., 2., 0.);

    // 10x + 2

    println!("{}", poly);

}

```

- Rootfinding

```rust

use rustnomial::{GenericPolynomial, Polynomial};

fn main() {

    let poly = Polynomial::::new(vec![1., 2.]).pow(9) * Polynomial::new(vec![1., 3.]);

    // ManyRealRoots([-3.0, -2.0, -2.0, -2.0, -2.0, -2.0, -2.0, -2.0, -2.0, -2.0])

    println!("{:?}", poly.roots());

}

```