      Copyright (c) 1996-2001, Ian T. Nabney
      All rights reserved.

      Redistribution and use in source and binary
      forms, with or without modification, are
      permitted provided that the following
      conditions are met:

         * Redistributions of source code must
           retain the above copyright notice, this
           list of conditions and the following
           disclaimer.
         * Redistributions in binary form must
           reproduce the above copyright notice,
           this list of conditions and the
           following disclaimer in the
           documentation and/or other materials
           provided with the distribution.
         * Neither the name of the Aston University, Birmingham, U.K.
           nor the names of its contributors may be
           used to endorse or promote products
           derived from this software without
           specific prior written permission.

      THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
      HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
      EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
      NOT LIMITED TO, THE IMPLIED WARRANTIES OF
      MERCHANTABILITY AND FITNESS FOR A PARTICULAR
      PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
      REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
      DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
      EXEMPLARY, OR CONSEQUENTIAL DAMAGES
      (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
      OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      HOWEVER CAUSED AND ON ANY THEORY OF
      LIABILITY, WHETHER IN CONTRACT, STRICT
      LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
      OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      OF THIS SOFTWARE, EVEN IF ADVISED OF THE
      POSSIBILITY OF SUCH DAMAGE.
