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<h1>set_trace</h1>
<p>Sets a flag if pivot selection must be printed while solving.</p>
<p><b>void set_trace(lprec </b>*<i>lp</i><b>, unsigned char </b><i>trace</i><b>);</b></p>
<p class="label"><b>Return Value</b></p>
<p><b>set_trace</b> has no return value.<br>
</p>
<p class="label"><b>Parameters</b></p>
<p class="dt"><i>lp</i></p>
<p class="indent">Pointer to previously created lp model. See return value of <A href="make_lp.htm">
make_lp</A>, <A HREF="copy_lp.htm">copy_lp</A>, <A href="read_lp.htm">read_lp,
read_LP</A>, <A href="read_mps.htm">read_mps, read_freemps, read_MPS, read_freeMPS</A>, <A HREF="read_XLI.htm">read_XLI</A></p>
<p class="dt"><i>trace</i></p>
<p class="indent">TRUE or FALSE. Print or do not print.</p>
<p class="label"><b>Remarks</b></p>
<p>The <b>set_trace</b> function sets a flag if pivot selection must be printed
while solving. This function is mend for debugging purposes. The default is not
to print (FALSE).
</p>
<p class="label"><b>Example</b></p>
<pre><code>#include <stdio.h>
#include <stdlib.h>
#include "lp_lib.h"
int main(void)
{
lprec *lp;
/* Create a new LP model */
lp = make_lp(0, 0);
if(lp == NULL) {
fprintf(stderr, "Unable to create new LP model\n");
return(1);
}
set_trace(lp, TRUE);
delete_lp(lp);
return(0);
}
</code></pre>
<p>
<A HREF="lp_solveAPIreference.htm">lp_solve API reference</A></p>
<p>
<b>See Also</b> <A HREF="make_lp.htm">make_lp</A>, <A HREF="copy_lp.htm">copy_lp</A>,
<A href="read_lp.htm">read_lp, read_LP</A>, <A HREF="read_mps.htm">read_mps,
read_freemps, read_MPS, read_freeMPS</A>, <A HREF="read_XLI.htm">read_XLI</A>, <A HREF="is_trace.htm">is_trace</A></p>
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