content: /*
   * Tencent is pleased to support the open source community by making Angel available.
   *
   * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
   *
   * Licensed 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
   *
   * https://opensource.org/licenses/Apache-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 com.tencent.angel.ml.math2.vector;
  
  import com.tencent.angel.ml.math2.storage.FloatVectorStorage;
  import it.unimi.dsi.fastutil.floats.FloatIterator;
  
  
  public abstract class FloatVector extends Vector {
  
    public abstract float max();
  
    public abstract float min();
  
    @Override
    public double sum() {
      FloatVectorStorage fstorage = (FloatVectorStorage) storage;
      double sumval = 0.0;
      if (fstorage.isSparse()) {
        FloatIterator iter = fstorage.valueIterator();
        while (iter.hasNext()) {
          sumval += iter.nextFloat();
        }
      } else {
        for (double val : fstorage.getValues()) {
          sumval += val;
        }
      }
      return sumval;
    }
  
    @Override
    public double norm() {
      FloatVectorStorage fstorage = (FloatVectorStorage) storage;
      double sumval2 = 0.0;
      if (fstorage.isSparse()) {
        FloatIterator iter = fstorage.valueIterator();
        while (iter.hasNext()) {
          double val = iter.nextFloat();
          sumval2 += val * val;
        }
      } else {
        for (double val : fstorage.getValues()) {
          sumval2 += val * val;
        }
      }
  
      return Math.sqrt(sumval2);
    }
  }