xex.xml

   1 <?xml version='1.0'?>
   2 <expr>
   3   <defun fname="factorial">
   4     <args><symbol>x</symbol></args>
   5     <body>
   6       <if><lt><variable vname="x"/><integer>2</integer></lt>
   7         <variable vname="x"/>
   8         <mul>
   9           <funcall fname="factorial">
  10             <sub><variable vname="x"/><integer>1</integer></sub>
  11           </funcall>
  12           <variable vname="x"/>
  13         </mul>
  14       </if>
  15     </body>
  16   </defun>
  17
  18   <set><symbol>x</symbol><integer>10</integer></set>
  19   <funcall fname="factorial"><variable vname="x"/></funcall>
  20 </expr>