| /* |
| * 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.math4.legacy.ode.nonstiff; |
| |
| |
| import org.apache.commons.math4.legacy.core.Field; |
| import org.apache.commons.math4.legacy.core.RealFieldElement; |
| import org.apache.commons.math4.legacy.ode.FieldEquationsMapper; |
| import org.apache.commons.math4.legacy.ode.FieldODEStateAndDerivative; |
| import org.junit.Test; |
| |
| public class LutherFieldStepInterpolatorTest extends RungeKuttaFieldStepInterpolatorAbstractTest { |
| |
| @Override |
| protected <T extends RealFieldElement<T>> RungeKuttaFieldStepInterpolator<T> |
| createInterpolator(Field<T> field, boolean forward, T[][] yDotK, |
| FieldODEStateAndDerivative<T> globalPreviousState, |
| FieldODEStateAndDerivative<T> globalCurrentState, |
| FieldODEStateAndDerivative<T> softPreviousState, |
| FieldODEStateAndDerivative<T> softCurrentState, |
| FieldEquationsMapper<T> mapper) { |
| return new LutherFieldStepInterpolator<>(field, forward, yDotK, |
| globalPreviousState, globalCurrentState, |
| softPreviousState, softCurrentState, |
| mapper); |
| } |
| |
| @Override |
| protected <T extends RealFieldElement<T>> FieldButcherArrayProvider<T> |
| createButcherArrayProvider(final Field<T> field) { |
| return new LutherFieldIntegrator<>(field, field.getOne()); |
| } |
| |
| @Override |
| @Test |
| public void interpolationAtBounds() { |
| doInterpolationAtBounds(Decimal64Field.getInstance(), 1.0e-15); |
| } |
| |
| @Override |
| @Test |
| public void interpolationInside() { |
| doInterpolationInside(Decimal64Field.getInstance(), 1.1e-7, 9.6e-9); |
| } |
| |
| @Override |
| @Test |
| public void nonFieldInterpolatorConsistency() { |
| doNonFieldInterpolatorConsistency(Decimal64Field.getInstance(), 8.4e-17, 2.3e-16, 2.1e-14, 1.3e-15); |
| } |
| |
| } |