    001    /*
    002     * Licensed to the Apache Software Foundation (ASF) under one or more
    003     * contributor license agreements.  See the NOTICE file distributed with
    004     * this work for additional information regarding copyright ownership.
    005     * The ASF licenses this file to You under the Apache License, Version 2.0
    006     * (the "License"); you may not use this file except in compliance with
    007     * the License.  You may obtain a copy of the License at
    008     *
    009     *      http://www.apache.org/licenses/LICENSE-2.0
    010     *
    011     * Unless required by applicable law or agreed to in writing, software
    012     * distributed under the License is distributed on an "AS IS" BASIS,
    013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014     * See the License for the specific language governing permissions and
    015     * limitations under the License.
    016     */
    017
    018    package org.apache.commons.math3.random;
    019
    020    /**
    021     * This interface represent a normalized random generator for
    022     * scalars.
    023     * Normalized generator provide null mean and unit standard deviation scalars.
    024     * @version $Id: NormalizedRandomGenerator.java 1416643 2012-12-03 19:37:14Z tn $
    025     * @since 1.2
    026     */
    027    public interface NormalizedRandomGenerator {
    028
    029      /** Generate a random scalar with null mean and unit standard deviation.
    030       * <p>This method does <strong>not</strong> specify the shape of the
    031       * distribution, it is the implementing class that provides it. The
    032       * only contract here is to generate numbers with null mean and unit
    033       * standard deviation.</p>
    034       * @return a random scalar with null mean and unit standard deviation
    035       */
    036      double nextNormalizedDouble();
    037
    038    }