1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<HEAD>
<TITLE>get_working_objective</TITLE>
<style TYPE="text/css"> BODY { font-family:verdana,arial,helvetica; margin:0; }
</style>
</HEAD>
<BODY>
<TABLE class="clsContainer" style="TABLE-LAYOUT: fixed" cellSpacing="0" cellPadding="15"
width="100%" border="0">
<TR>
<TD vAlign="top">
<h1>get_working_objective</h1>
<p>Returns the value of the objective function.</p>
<p><b>REAL get_working_objective(lprec </b>*<i>lp</i><b>);</b></p>
<p class="label"><b>Return Value</b></p>
<p><b>get_working_objective</b> returns the current value of the objective while
solving the model.<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="label"><b>Remarks</b></p>
<p>The <b>get_working_objective</b> function returns the current value of the
objective while solving the model.<br>
This value can be retrieved while solving in a callback function.
</p>
<p class="label"><b>Example</b></p>
<pre><code>#include <stdio.h>
#include <stdlib.h>
#include "lp_lib.h"
int msgfunction(lprec *lp, void *userhandle, char *buf)
{
printf("%f\n", get_working_objective(lp));
return(0);
}
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);
}
put_msgfunc(lp, msgfunction, NULL, 0);
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="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_working_objective.htm">get_working_objective</a>,
<a href="is_feasible.htm">is_feasible</a>, <a href="get_variables.htm">get_variables,
get_ptr_variables</a>, <a href="get_constraints.htm">get_constraints,
get_ptr_constraints</a>, <a href="get_constr_value.htm">get_constr_value</a>, <a href="get_primal_solution.htm">get_primal_solution,
get_ptr_primal_solution, get_var_primalresult</a>, <a href="get_sensitivity_rhs.htm">
get_sensitivity_rhs, get_ptr_sensitivity_rhs, get_dual_solution,
get_ptr_dual_solution, get_var_dualresult</a>, <a href="get_sensitivity_obj.htm">
get_sensitivity_obj, get_ptr_sensitivity_obj, get_sensitivity_objex,
get_ptr_sensitivity_objex</a>
</p>
</TD>
</TR>
</TABLE>
</BODY>
</html>
|
