math-test-functions 0.5.2

A collection of non linear functions for testing optimisation algorithms
Documentation 
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//! Rosenbrock Disk Constraint test function

use ndarray::Array1;

/// Rosenbrock disk constraint: x^2 + y^2 <= 2
pub fn rosenbrock_disk_constraint(x: &Array1<f64>) -> f64 {
    x[0].powi(2) + x[1].powi(2) - 2.0
}