package com.imsl.test.example.math;

import com.imsl.math.*;

/**
 * <p>
 * Finds zeros of the \(\sin\) function.</p>
 * In this example \(3\) zeros of the \(\sin\) function are found.
 *
 * @see <a href="ZerosFunctionEx1.java">Code</a>
 * @see <a href ="doc-files/ZerosFunctionEx1.out">Output</a>
 */
public class ZerosFunctionEx1 {

    public static void main(String args[]) {

        ZerosFunction.Function fcn = new ZerosFunction.Function() {
            @Override
            public double f(double x) {
                return Math.sin(x);
            }
        };

        ZerosFunction zf = new ZerosFunction();
        double guess[] = {5, 18, -6};
        zf.setGuess(guess);
        double zeros[] = zf.computeZeros(fcn);
        for (int k = 0; k < zeros.length; k++) {
            System.out.println(zeros[k] + " = " + (zeros[k] / Math.PI) + " pi");
        }
    }
}