| /* |
| * 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.linear; |
| |
| /** |
| * Marker class for RealVectors that require sparse backing storage |
| * <p> |
| * Caveat: Implementation are allowed to assume that, for any {@code x}, |
| * the equality {@code x * 0d == 0d} holds. But it is is not true for |
| * {@code NaN}. Moreover, zero entries will lose their sign. |
| * Some operations (that involve {@code NaN} and/or infinities) may |
| * thus give incorrect results, like multiplications, divisions or |
| * functions mapping. |
| * </p> |
| * @since 2.0 |
| */ |
| public abstract class SparseRealVector extends RealVector {} |
