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    1   /**
    2    * Licensed to the Apache Software Foundation (ASF) under one
    3    * or more contributor license agreements. See the NOTICE file
    4    * distributed with this work for additional information
    5    * regarding copyright ownership. The ASF licenses this file
    6    * to you under the Apache License, Version 2.0 (the
    7    * "License"); you may not use this file except in compliance
    8    * with the License. You may obtain a copy of the License at
    9    *
   10    * http://www.apache.org/licenses/LICENSE-2.0
   11    *
   12    * Unless required by applicable law or agreed to in writing,
   13    * software distributed under the License is distributed on an
   14    * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   15    * KIND, either express or implied. See the License for the
   16    * specific language governing permissions and limitations
   17    * under the License.
   18    */
   19   
   20   package org.apache.mahout.math.function;
   21   
   22   
   23   /**
   24    * Interface that represents a function object: a function that takes a single argument and returns a single value.
   25    *
   26    */
   27   public interface FloatFunction {
   28   
   29     /**
   30      * Applies a function to an argument.
   31      *
   32      * @param argument argument passed to the function.
   33      * @return the result of the function.
   34      */
   35     float apply(float argument);
   36   }

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