content: ///////////////////////////////////////////////////////////////////////////////
  // Copyright (c) 2009, Rob Eden All Rights Reserved.
  //
  // This library is free software; you can redistribute it and/or
  // modify it under the terms of the GNU Lesser General Public
  // License as published by the Free Software Foundation; either
  // version 2.1 of the License, or (at your option) any later version.
  //
  // This library is distributed in the hope that it will be useful,
  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  // GNU General Public License for more details.
  //
  // You should have received a copy of the GNU Lesser General Public
  // License along with this program; if not, write to the Free Software
  // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  ///////////////////////////////////////////////////////////////////////////////
  
  package gnu.trove.queue;
  
  
  import gnu.trove.TFloatCollection;
  
  import java.io.Serializable;
  
  /**
   * Interface for Trove queue implementations.
   *
   * @see java.util.Queue
   */
  public interface TFloatQueue extends TFloatCollection {
  	/**
  	 * Retrieves and removes the head of this queue. This method differs from
  	 * {@link #poll} only in that it throws an exception if this queue is empty.
  	 */
  	public float element();
  
  
  	/**
  	 * Inserts the specified element into this queue if it is possible to do so
  	 * immediately without violating capacity restrictions. When using a
  	 * capacity-restricted queue, this method is generally preferable to
  	 * {@link #add}, which can fail to insert an element only by throwing an exception.
  	 *
  	 * @param e		The element to add.
  	 *
  	 * @return	<tt>true</tt> if the element was added to this queue, else <tt>false</tt>
  	 */
  	public boolean offer( float e );
  
  
  	/**
  	 * Retrieves, but does not remove, the head of this queue, or returns
  	 * {@link #getNoEntryValue} if this queue is empty.
  	 *
  	 * @return	the head of this queue, or {@link #getNoEntryValue} if this queue is empty 
  	 */
  	public float peek();
  
  
  	/**
  	 * Retrieves and removes the head of this queue, or returns {@link #getNoEntryValue}
  	 * if this queue is empty.
  	 *
  	 * @return	the head of this queue, or {@link #getNoEntryValue} if this queue is empty
  	 */
  	public float poll();
  }
  