elemental/standard/
cos.rs

1//! Computes cosines.
2
3use crate::Matrix;
4use crate::error::*;
5
6use super::StdFunc;
7
8#[derive(Clone)]
9pub struct Cos;
10
11impl Cos {
12    /// Evaluates `Cos` while minimizing heap allocation.
13    pub fn evalpure(matrix: &Matrix) -> Matrix {
14        let mut output = Vec::new();
15        let rows = matrix.rows();
16        let cols = matrix.cols();
17
18        for v in matrix.vals() {
19            output.push(v.cos());
20        }
21
22        Matrix::new(
23            rows,
24            cols,
25            output,
26        )
27    }
28}
29
30impl StdFunc for Cos {
31    fn eval(&self, args: Vec<Matrix>) -> Matrix {
32        if args.len() != 1 {
33            throw(WrongNumberOfArgs);
34            return Matrix::new(0, 0, Vec::new());
35        }
36
37        Self::evalpure(&args[0])
38    }
39}
elemental/standard/cos.rs

elemental/standard/
cos.rs
