Im using ant-contrib to implement a greater-than (for ints only)
functionality.
Did I miss something in the documentation? Or is this the best approach (i
realize I could have written a custom ant task)

Did i reinvent some wheel in ant?

  <target name="t">
    <taskdef resource="net/sf/antcontrib/antlib.xml">
     <classpath>
       <pathelement location="ant-contrib-0.6.jar"/>
     </classpath>
   </taskdef>

    <macrodef name="greaterthan">
       <attribute name="resultprop" default="NOT SET"/>
       <attribute name="arg1" default="NOT SET"/>
       <attribute name="arg2" default="NOT SET"/>
       <sequential>
         <math result="gt_tmp" datatype="int">
           <op op="max" >
             <num value="@{arg1}"/>
             <num value="@{arg2}"/>
           </op>
         </math>
         <echo>${gt_tmp}</echo>
         <if>
           <equals arg1="@{arg1}" arg2="${gt_tmp}" />
           <then>
             <property name="@{resultprop}" value="1" />
           </then>
           <else>
             <property name="@{resultprop}" value="0" />
           </else>
         </if>
       </sequential>
    </macrodef>

    <greaterthan arg1="100" arg2="20" resultprop="well" />
    <echo>${well}</echo>
  </target>