/usr/share/doc/coinor-libsymphony-doc/examples/sensitivity.c is in coinor-libsymphony-doc 5.5.6-1ubuntu2.
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/* */
/* This file is part of the SYMPHONY MILP Solver Framework. */
/* */
/* SYMPHONY was jointly developed by Ted Ralphs (ted@lehigh.edu) and */
/* Laci Ladanyi (ladanyi@us.ibm.com). */
/* */
/* The author of this file is Menal Guzelsoy */
/* */
/* (c) Copyright 2005-2013 Lehigh University. All Rights Reserved. */
/* */
/* This software is licensed under the Eclipse Public License. Please see */
/* accompanying file for terms. */
/* */
/*===========================================================================*/
#include <cstdio>
#ifdef USE_OSI_INTERFACE
#include "OsiSymSolverInterface.hpp"
#include <iostream>
int main(int argc, char **argv)
{
OsiSymSolverInterface si;
si.parseCommandLine(argc, argv);
si.loadProblem();
si.setSymParam(OsiSymSensitivityAnalysis, true);
si.initialSolve();
int ind[2];
double val[2];
ind[0] = 4; val[0] = 7000;
ind[1] = 7; val[1] = 6000;
double lb = si.getLbForNewRhs(2, ind, val);
double ub = si.getUbForNewRhs(2, ind, val);
printf("\nBounds for the new rhs:\n lb: %f\n ub: %f \n\n", lb, ub);
return(0);
}
#else
#include "symphony.h"
#include <iostream>
int main(int argc, char **argv)
{
sym_environment *env = sym_open_environment();
sym_parse_command_line(env, argc, argv);
sym_load_problem(env);
sym_set_int_param(env, "sensitivity_analysis", TRUE);
sym_solve(env);
int ind[2];
double val[2];
ind[0] = 4; val[0] = 0;
ind[1] = 7; val[1] = 0;
double lb = 0.0, ub =0.0;
sym_get_lb_for_new_rhs(env, 2, ind, val, &lb);
// sym_get_ub_for_new_rhs(env, 2, ind, val, &ub);
printf("\nBounds for the new rhs:\n lb: %f\n ub: %f \n\n", lb, ub);
sym_close_environment(env);
return(0);
}
#endif
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