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<A NAME=ORDP>

<TITLE>ORDP</TITLE></A>
<b><a href=r37_idx.html>INDEX</a></b><p><p>



<B>ORDP</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>operator</B><P>
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The <em>ordp</em> logical operator returns 
<A HREF=r37_0122.html>true</A> if its first argument is 
ordered ahead of its second argument in canonical internal ordering, or is 
identical to it. 
 <P> <H3> 
syntax: </H3>
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<em>ordp</em>(&lt;expression1&gt;,&lt;expression2&gt;) 
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&lt;expression1&gt; and &lt;expression2&gt; can be any valid REDUCE scalar 
expression. 
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 <P> <H3> 
examples: </H3>
<P><PRE><TT>
if ordp(x**2 + 1,x**3 + 3) then write &quot;yes&quot; else write &quot;no&quot;;
			 


  no 


if ordp(101,100) then write &quot;yes&quot; else write &quot;no&quot;;
			 


  yes 


if ordp(x,x) then write &quot;yes&quot; else write &quot;no&quot;;
			 


  yes

</TT></PRE><P>Logical operators can only be used in conditional expressions, suc
h as 
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<em>if</em>...<em>then</em>...<em>else</em> and <em>while</em>...<em>do</em>. 
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