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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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package org.apache.commons.math.ode;
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/** This interface represents a second order integrator for
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* differential equations.
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* <p>The classes which are devoted to solve second order differential
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* equations should implement this interface. The problems which can
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* be handled should implement the {@link
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* SecondOrderDifferentialEquations} interface.</p>
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* @see SecondOrderDifferentialEquations
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* @version $Revision: 674820 $ $Date: 2008-07-08 09:37:09 -0400 (Tue, 08 Jul 2008) $
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public interface SecondOrderIntegrator extends ODEIntegrator {
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/** Integrate the differential equations up to the given time
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* @param equations differential equations to integrate
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* @param t0 initial time
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* @param y0 initial value of the state vector at t0
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* @param yDot0 initial value of the first derivative of the state
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* @param t target time for the integration
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* (can be set to a value smaller thant <code>t0</code> for backward integration)
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* @param y placeholder where to put the state vector at each
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* successful step (and hence at the end of integration), can be the
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* @param yDot placeholder where to put the first derivative of
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* the state vector at time t, can be the same object as yDot0
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* @throws IntegratorException if the integrator cannot perform integration
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* @throws DerivativeException this exception is propagated to the caller if the
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* underlying user function triggers one
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public void integrate(SecondOrderDifferentialEquations equations,
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double t0, double[] y0, double[] yDot0,
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double t, double[] y, double[] yDot)
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throws DerivativeException, IntegratorException;