eltl 0.7.0

An engineer's calculator. Written in Rust.
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

//! Computes square roots.

use crate::Matrix;
use crate::error::*;

use super::StdFunc;

#[derive(Clone)]
pub struct Sqrt;

impl Sqrt {
    /// Evaluates `Sqrt` while minimizing heap allocation.
    pub fn evalpure(matrix: &Matrix) -> Matrix {
        let mut output = Vec::new();
        let rows = matrix.rows();
        let cols = matrix.cols();

        for v in matrix.vals() {
            output.push(v.sqrt());
        }

        Matrix::new(
            rows,
            cols,
            output,
        )
    }
}

impl StdFunc for Sqrt {
    fn eval(&self, args: Vec<Matrix>) -> Matrix {
        if args.len() != 1 {
            throw(WrongNumberOfArgs);
            return Matrix::new(0, 0, Vec::new());
        }

        Self::evalpure(&args[0])
    }
}