| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.commons.math.ode; |
| |
| import org.apache.commons.math.ode.DerivativeException; |
| |
| |
| /** This interface represents a second order integrator for |
| * differential equations. |
| * |
| * <p>The classes which are devoted to solve second order differential |
| * equations should implement this interface. The problems which can |
| * be handled should implement the {@link |
| * SecondOrderDifferentialEquations} interface.</p> |
| * |
| * @see SecondOrderDifferentialEquations |
| * @version $Revision: 1073158 $ $Date: 2011-02-21 22:46:52 +0100 (lun. 21 févr. 2011) $ |
| * @since 1.2 |
| */ |
| |
| public interface SecondOrderIntegrator extends ODEIntegrator { |
| |
| /** Integrate the differential equations up to the given time |
| * @param equations differential equations to integrate |
| * @param t0 initial time |
| * @param y0 initial value of the state vector at t0 |
| * @param yDot0 initial value of the first derivative of the state |
| * vector at t0 |
| * @param t target time for the integration |
| * (can be set to a value smaller thant <code>t0</code> for backward integration) |
| * @param y placeholder where to put the state vector at each |
| * successful step (and hence at the end of integration), can be the |
| * same object as y0 |
| * @param yDot placeholder where to put the first derivative of |
| * the state vector at time t, can be the same object as yDot0 |
| * @throws IntegratorException if the integrator cannot perform integration |
| * @throws DerivativeException this exception is propagated to the caller if the |
| * underlying user function triggers one |
| */ |
| void integrate(SecondOrderDifferentialEquations equations, |
| double t0, double[] y0, double[] yDot0, |
| double t, double[] y, double[] yDot) |
| throws DerivativeException, IntegratorException; |
| |
| } |