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<DIV><A name=s85s2 doxytag="CompareNewVarsToOldOnes"></A>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">Hi everyone<?xml:namespace prefix
= o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-tab-count: 1">
</SPAN>I been working (trying at least ;-) ) with BCP for a while and inspired
by the recent submissions I will start posting some small bugs and suggestions.
</P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-tab-count: 1">
</SPAN>The first one is regarding the <EM>CompareNewVarsToOldOnes LP parameter
and LP_user::</EM><A
href="file:///C:\ARCHIVOS\uni\2001-2\OSL\Bcp-doc_2001Dec20\html\class_b_c_p__lp__user.html#a51">compare_vars</A>
function. In combination they are used to check if new variables ( form column
generation, etc) are different from variables already in the formulation. </P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-tab-count: 1">
</SPAN>The “problem” is that this works for variables generated in the variable
generation module ( <A
href="file:///C:\ARCHIVOS\uni\2001-2\OSL\Bcp-doc_2001Dec20\html\class_b_c_p__vg__user.html"><B>BCP_vg_user</B></A>
derived class ), but not for variables generated in BCP_lp_user’s derived <A
href="file:///C:\ARCHIVOS\uni\2001-2\OSL\Bcp-doc_2001Dec20\html\class_b_c_p__lp__user.html#a49"><B>generate_vars_in_lp</B></A>
functions. This can only be noticed by reading the source code and there doesn’t
seem to be any reference about this in the documentation.</P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-tab-count: 1">
</SPAN>I am not sure if this really qualifies as a “bug”, but at least a warning
note in the documentation would be nice.</P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-tab-count: 1">
</SPAN>I haven’t check, but this probably applies to the cut comparison
functions.</P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"> </P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face=Arial size=2>Juan
Pablo Vielma<BR><A
href="mailto:jvielma@dim.uchile.cl">jvielma@dim.uchile.cl</A><BR>Departamento de
Ingenieria Matematica<BR>Universidad de Chile</FONT></P></DIV></BODY></HTML>