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					<h1>set_epsel</h1>
					<p>Specifies the value that is used as a tolerance for rounding values to zero.</p>
					<p><b>void set_epsel(lprec </b>*<i>lp</i><b>, REAL </b><i>epsel</i><b>);</b></p>
					<p class="label"><b>Return Value</b></p>
					<p><b>set_epsel</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>epsel</i></p>
					<p class="indent">The value that is used as a tolerance for rounding values to
						zero.</p>
					<p class="label"><b>Remarks</b></p>
					<p>The <b>set_epsel</b> function specifies the value that is used as a tolerance
						for rounding values to zero.<br>
						Floating-point calculations always result in loss of precision and rounding
						errors. Therefore a very small value (example 1e-99) could be the result of
						such errors and should be considered as 0 for the algorithm. <i>epsel</i> specifies
						the tolerance to determine if a value should be considered as 0. If abs(value)
						is less than this <i>epsel</i> value, it is considered as 0.<br>
						<i>epsel</i> is used on all other places where epsint, epsb, epsd, epspivot,
						epsperturb are not used. The default <i>epsel</i> value is 1e-12
					</p>
					<p class="label"><b>Example</b></p>
					<pre><code>#include &lt;stdio.h&gt;
#include &lt;stdlib.h&gt;
#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_epsel(lp, 1.0e-11); /* sets epsel to 1e-11 */

  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="get_epsel.htm">get_epsel</A>, <A href="set_infinite.htm">
							set_infinite</A>, <A href="get_infinite.htm">get_infinite</A>, <A href="is_infinite.htm">is_infinite</A>, <A href="set_epsint.htm">
							set_epsint</A>, <A href="get_epsint.htm">get_epsint</A>, <A href="set_epsd.htm">
							set_epsd</A>, <A href="get_epsd.htm">get_epsd</A>, <A href="set_epsb.htm">set_epsb</A>,
						<A href="get_epsb.htm">get_epsb</A>, <A href="get_epspivot.htm">get_epspivot</A>,
						<A href="set_epspivot.htm">set_epspivot</A>, <A href="set_epsperturb.htm">set_epsperturb</A>,
						<A href="get_epsperturb.htm">get_epsperturb</A>, <A HREF="set_mip_gap.htm">set_mip_gap</A>, <A HREF="get_mip_gap.htm">get_mip_gap</A></p>
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