content: /*
   * 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.asterix.runtime.aggregates.serializable.std;
  
  public class BufferSerDeUtil {
  
      public static double getDouble(byte[] bytes, int offset) {
          return Double.longBitsToDouble(getLong(bytes, offset));
      }
  
      public static float getFloat(byte[] bytes, int offset) {
          return Float.intBitsToFloat(getInt(bytes, offset));
      }
  
      public static boolean getBoolean(byte[] bytes, int offset) {
          if (bytes[offset] == 0)
              return false;
          else
              return true;
      }
  
      public static int getInt(byte[] bytes, int offset) {
          return ((bytes[offset] & 0xff) << 24) + ((bytes[offset + 1] & 0xff) << 16) + ((bytes[offset + 2] & 0xff) << 8)
                  + ((bytes[offset + 3] & 0xff) << 0);
      }
  
      public static long getLong(byte[] bytes, int offset) {
          return (((long) (bytes[offset] & 0xff)) << 56) + (((long) (bytes[offset + 1] & 0xff)) << 48)
                  + (((long) (bytes[offset + 2] & 0xff)) << 40) + (((long) (bytes[offset + 3] & 0xff)) << 32)
                  + (((long) (bytes[offset + 4] & 0xff)) << 24) + (((long) (bytes[offset + 5] & 0xff)) << 16)
                  + (((long) (bytes[offset + 6] & 0xff)) << 8) + (((long) (bytes[offset + 7] & 0xff)) << 0);
      }
  
      public static void writeBoolean(boolean value, byte[] bytes, int offset) {
          if (value)
              bytes[offset] = (byte) 1;
          else
              bytes[offset] = (byte) 0;
      }
  
      public static void writeInt(int value, byte[] bytes, int offset) {
          bytes[offset++] = (byte) (value >> 24);
          bytes[offset++] = (byte) (value >> 16);
          bytes[offset++] = (byte) (value >> 8);
          bytes[offset++] = (byte) (value);
      }
  
      public static void writeLong(long value, byte[] bytes, int offset) {
          bytes[offset++] = (byte) (value >> 56);
          bytes[offset++] = (byte) (value >> 48);
          bytes[offset++] = (byte) (value >> 40);
          bytes[offset++] = (byte) (value >> 32);
          bytes[offset++] = (byte) (value >> 24);
          bytes[offset++] = (byte) (value >> 16);
          bytes[offset++] = (byte) (value >> 8);
          bytes[offset++] = (byte) (value);
      }
  
      public static void writeDouble(double value, byte[] bytes, int offset) {
          long lValue = Double.doubleToLongBits(value);
          writeLong(lValue, bytes, offset);
      }
  
      public static void writeFloat(float value, byte[] bytes, int offset) {
          int iValue = Float.floatToIntBits(value);
          writeInt(iValue, bytes, offset);
      }
  
  }
  