| /* |
| * 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.lucene.util; |
| |
| import com.carrotsearch.randomizedtesting.annotations.ParametersFactory; |
| import java.util.function.ToDoubleFunction; |
| import java.util.function.ToIntFunction; |
| import java.util.stream.IntStream; |
| import org.apache.lucene.tests.util.LuceneTestCase; |
| import org.junit.BeforeClass; |
| |
| public class TestVectorUtilProviders extends LuceneTestCase { |
| |
| private static final double DELTA = 1e-3; |
| private static final VectorUtilProvider LUCENE_PROVIDER = new VectorUtilDefaultProvider(); |
| private static final VectorUtilProvider JDK_PROVIDER = VectorUtilProvider.lookup(true); |
| |
| private static final int[] VECTOR_SIZES = { |
| 1, 4, 6, 8, 13, 16, 25, 32, 64, 100, 128, 207, 256, 300, 512, 702, 1024 |
| }; |
| |
| private final int size; |
| |
| public TestVectorUtilProviders(int size) { |
| this.size = size; |
| } |
| |
| @ParametersFactory |
| public static Iterable<Object[]> parametersFactory() { |
| return () -> IntStream.of(VECTOR_SIZES).boxed().map(i -> new Object[] {i}).iterator(); |
| } |
| |
| @BeforeClass |
| public static void beforeClass() throws Exception { |
| assumeFalse( |
| "Test only works when JDK's vector incubator module is enabled.", |
| JDK_PROVIDER instanceof VectorUtilDefaultProvider); |
| } |
| |
| public void testFloatVectors() { |
| var a = new float[size]; |
| var b = new float[size]; |
| for (int i = 0; i < size; ++i) { |
| a[i] = random().nextFloat(); |
| b[i] = random().nextFloat(); |
| } |
| assertFloatReturningProviders(p -> p.dotProduct(a, b)); |
| assertFloatReturningProviders(p -> p.squareDistance(a, b)); |
| assertFloatReturningProviders(p -> p.cosine(a, b)); |
| } |
| |
| public void testBinaryVectors() { |
| var a = new byte[size]; |
| var b = new byte[size]; |
| random().nextBytes(a); |
| random().nextBytes(b); |
| assertIntReturningProviders(p -> p.dotProduct(a, b)); |
| assertIntReturningProviders(p -> p.squareDistance(a, b)); |
| assertFloatReturningProviders(p -> p.cosine(a, b)); |
| } |
| |
| private void assertFloatReturningProviders(ToDoubleFunction<VectorUtilProvider> func) { |
| assertEquals(func.applyAsDouble(LUCENE_PROVIDER), func.applyAsDouble(JDK_PROVIDER), DELTA); |
| } |
| |
| private void assertIntReturningProviders(ToIntFunction<VectorUtilProvider> func) { |
| assertEquals(func.applyAsInt(LUCENE_PROVIDER), func.applyAsInt(JDK_PROVIDER)); |
| } |
| } |