eulersdiffeqsolver.java

来自「一个一元曲线多项式数值演示例子」· Java 代码 · 共 27 行

package numbercruncher.mathutils;

/**
 * Differential equation solver that implements Euler's algorithm.
 */
public class EulersDiffEqSolver
    extends DiffEqSolver {
  /**
   * Constructor.
   * @param equation the differential equation to solve
   */
  public EulersDiffEqSolver(DifferentialEquation equation) {
    super(equation);
  }

  /**
   * Return the next data point in the
   * approximation of the solution.
   * @param h the width of the interval
   */
  public DataPoint nextPoint(float h) {
    y += h * equation.at(x, y);
    x += h;

    return new DataPoint(x, y);
  }
}