code: public static boolean memcmp( byte[] a, int a_offset, byte[] b, int b_offset, int length ) {
          if ((a == null) && (b == null)) {
              return true;
          }
  
          if ((a == null) || (b == null)) {
              return false;
          }
  
          for( int i = 0; i < length; ++i, ++a_offset, ++b_offset )
              if (a[a_offset] != b[b_offset]) {
                  return false;
              }
  
          return true;
      }
docs: Compare the contents of one array of <code>bytes</code> to another.
  
  @param a the first array
  @param a_offset the start offset in <code>a</code>
  @param b the second array
  @param b_offset the start offset in <code>b</code>
  @param length the number of <code>byte</code>s to compare.
  
  @return DOCUMENT ME!