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Primitive-type collections based on CERN's Colt Java API

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/**
 * 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.mahout.math.function;


/**
 * Interface that represents a function object: a function that takes a single argument and returns a single value.
 *
 */
public interface FloatFunction {

  /**
   * Applies a function to an argument.
   *
   * @param argument argument passed to the function.
   * @return the result of the function.
   */
  float apply(float argument);
}