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<A NAME=FIXP>

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



<B>FIXP</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>operator</B><P>
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The <em>fixp</em> logical operator returns true if its argument is an integer. 
 <P> <H3> 
syntax: </H3>
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<em>fixp</em>(&lt;expression&gt;) or <em>fixp</em> &lt;simple\_expression&gt; 
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&lt;expression&gt; can be any valid REDUCE expression, &lt;simple\_expression
&gt; 
must be a single identifier or begin with a prefix operator. 
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 <P> <H3> 
examples: </H3>
<P><PRE><TT>
if fixp 1.5 then write &quot;ok&quot; else write &quot;not&quot;;
			 


  not 


if fixp(a) then write &quot;ok&quot; else write &quot;not&quot;;
			 


  not 


a := 15; 

  A := 15 


if fixp(a) then write &quot;ok&quot; else write &quot;not&quot;;
			 


  ok

</TT></PRE><P>Logical operators can only be used inside conditional expressions 
such as 
<em>if</em>...<em>then</em> or <em>while</em>...<em>do</em>. 
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