
<A NAME=KORDER>

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



<B>KORDER</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>declaration</B><P>
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The <em>korder</em> declaration changes the internal canonical ordering of 
kernels. 
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syntax: </H3>
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<em>korder</em>&lt;kernel&gt;{<em>,</em>&lt;kernel&gt;}* 
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&lt;kernel&gt; must be a REDUCE 
<A HREF=r37_0002.html>kernel</A> or a 
<A HREF=r37_0053.html>list</A> of 
<em>kernel</em>s. 
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The declaration <em>korder</em> changes the internal ordering, but not the print
 
ordering, so the effects cannot be seen on output. However, in some 
calculations, the order of the variables can have significant effects on the 
time and space demands of a calculation. If you are doing a demanding 
calculation with several kernels, you can experiment with changing the 
canonical ordering to improve behavior. 
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The first kernel in the argument list is given the highest priority, the 
second gets the next highest, and so on. Kernels not named in a 
<em>korder</em> ordering otherwise. A new <em>korder</em> declaration replaces 
the previous one. To return to canonical ordering, use the command 
<em>korder nil</em>. 
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To change the print ordering, use the declaration 
<A HREF=r37_0212.html>order</A>. 
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