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Diffstat (limited to 'src/main/java/org/apache/commons/math3/linear/SparseRealVector.java')
-rw-r--r-- | src/main/java/org/apache/commons/math3/linear/SparseRealVector.java | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/main/java/org/apache/commons/math3/linear/SparseRealVector.java b/src/main/java/org/apache/commons/math3/linear/SparseRealVector.java new file mode 100644 index 0000000..4eb2ce5 --- /dev/null +++ b/src/main/java/org/apache/commons/math3/linear/SparseRealVector.java @@ -0,0 +1,29 @@ +/* + * 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.math3.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. + * + * @since 2.0 + */ +public abstract class SparseRealVector extends RealVector {} |