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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  package org.apache.commons.geometry.core.internal;
    18
    19  /** Represents a function that accepts three double values and returns
    20   * a result.
    21   * @param <T> The function return type.
    22   */
    23  @FunctionalInterface
    24  public interface DoubleFunction3N<T> {
    25
    26      /** Apply the function and return the result.
    27       * @param n1 first function argument
    28       * @param n2 second function argument
    29       * @param n3 third function argument
    30       * @return the function result
    31       */
    32      T apply(double n1, double n2, double n3);
    33  }