| /* |
| * 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; |
| |
| public class ThreeEighthesFieldIntegratorTest extends RungeKuttaFieldIntegratorAbstractTest { |
| |
| @Override |
| protected <T extends RealFieldElement<T>> RungeKuttaFieldIntegrator<T> |
| createIntegrator(Field<T> field, T step) { |
| return new ThreeEighthesFieldIntegrator<>(field, step); |
| } |
| |
| @Override |
| public void testNonFieldIntegratorConsistency() { |
| doTestNonFieldIntegratorConsistency(Decimal64Field.getInstance()); |
| } |
| |
| @Override |
| public void testMissedEndEvent() { |
| doTestMissedEndEvent(Decimal64Field.getInstance(), 1.0e-15, 6.0e-5); |
| } |
| |
| @Override |
| public void testSanityChecks() { |
| doTestSanityChecks(Decimal64Field.getInstance()); |
| } |
| |
| @Override |
| public void testDecreasingSteps() { |
| doTestDecreasingSteps(Decimal64Field.getInstance(), 1.0, 1.0, 1.0e-10); |
| } |
| |
| @Override |
| public void testSmallStep() { |
| doTestSmallStep(Decimal64Field.getInstance(), 2.0e-13, 4.0e-12, 1.0e-12, "3/8"); |
| } |
| |
| @Override |
| public void testBigStep() { |
| doTestBigStep(Decimal64Field.getInstance(), 0.0004, 0.005, 1.0e-12, "3/8"); |
| |
| } |
| |
| @Override |
| public void testBackward() { |
| doTestBackward(Decimal64Field.getInstance(), 5.0e-10, 7.0e-10, 1.0e-12, "3/8"); |
| } |
| |
| @Override |
| public void testKepler() { |
| doTestKepler(Decimal64Field.getInstance(), 0.0348, 1.0e-4); |
| } |
| |
| @Override |
| public void testStepSize() { |
| doTestStepSize(Decimal64Field.getInstance(), 1.0e-12); |
| } |
| |
| @Override |
| public void testSingleStep() { |
| doTestSingleStep(Decimal64Field.getInstance(), 0.21); |
| } |
| |
| @Override |
| public void testTooLargeFirstStep() { |
| doTestTooLargeFirstStep(Decimal64Field.getInstance()); |
| } |
| |
| @Override |
| public void testUnstableDerivative() { |
| doTestUnstableDerivative(Decimal64Field.getInstance(), 1.0e-12); |
| } |
| |
| @Override |
| public void testDerivativesConsistency() { |
| doTestDerivativesConsistency(Decimal64Field.getInstance(), 1.0e-10); |
| } |
| |
| @Override |
| public void testPartialDerivatives() { |
| doTestPartialDerivatives(3.2e-10, new double[] { 2.1e-9, 5.9e-10, 7.0e-11, 5.9e-10, 5.9e-10 }); |
| } |
| |
| } |