Expand description
§cagra
Tiny CAlculation GRAph library
§Features
§Examples
Create a graph for z = (x + y) - 2*x*y
use cagra::graph::*;
let mut g: Graph<f64> = Graph::new();
let x = g.variable("x", 1.0).unwrap();
let y = g.variable("y", 3.0).unwrap();
let x_y = g.add(x, y);
let xy = g.mul(x, y);
let a = g.constant(2.0);
let axy = g.mul(a, xy);
let sum = g.sub(x_y, axy);
let result = g.eval_value(sum).unwrap();
abs_diff_eq!(result, -2.0);
g.eval_deriv(sum);
let dx = g.get_deriv(x).unwrap();
let dy = g.get_deriv(y).unwrap();
abs_diff_eq!(dx, -5.0);
abs_diff_eq!(dy, -1.0);
Modules§
- Calculation graph
- Value and operators in calculation graph