example1b.c

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/*
 *      This file is part of qpOASES.
 *
 *      qpOASES -- An Implementation of the Online Active Set Strategy.
 *      Copyright (C) 2007-2015 by Hans Joachim Ferreau, Andreas Potschka,
 *      Christian Kirches et al. All rights reserved.
 *
 *      qpOASES is free software; you can redistribute it and/or
 *      modify it under the terms of the GNU Lesser General Public
 *      License as published by the Free Software Foundation; either
 *      version 2.1 of the License, or (at your option) any later version.
 *
 *      qpOASES is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *      See the GNU Lesser General Public License for more details.
 *
 *      You should have received a copy of the GNU Lesser General Public
 *      License along with qpOASES; if not, write to the Free Software
 *      Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */


#include <qpOASES_e.h>


int main( )
{
        USING_NAMESPACE_QPOASES

        /* Setup data of first QP. */
        real_t H[2*2] = { 1.0, 0.0, 0.0, 0.5 };
        real_t g[2] = { 1.5, 1.0 };
        real_t lb[2] = { 0.5, -2.0 };
        real_t ub[2] = { 5.0, 2.0 };

        /* Setup data of second QP. */
        real_t g_new[2] = { 1.0, 1.5 };
        real_t lb_new[2] = { 0.0, -1.0 };
        real_t ub_new[2] = { 5.0, -0.5 };


        /* Setting up QProblemB object. */
        static QProblemB example;
        static Options options;

        int nWSR = 10;
        real_t xOpt[2];

        QProblemBCON( &example,2,HST_UNKNOWN );
        Options_setToDefault( &options );
        /* options.enableFlippingBounds = BT_FALSE; */
        options.initialStatusBounds = ST_INACTIVE;
        options.numRefinementSteps = 1;
        /* options.enableCholeskyRefactorisation = 1; */
        QProblemB_setOptions( &example,options );


        /* Solve first QP. */
        nWSR = 10;
        QProblemB_init( &example,H,g,lb,ub, &nWSR,0 );

        /* Get and print solution of second QP. */
        QProblemB_getPrimalSolution( &example,xOpt );
        printf( "\nxOpt = [ %e, %e ];  objVal = %e\n\n", xOpt[0],xOpt[1],QProblemB_getObjVal(&example) );
        
        /* Solve second QP. */
        nWSR = 10;
        QProblemB_hotstart( &example,g_new,lb_new,ub_new, &nWSR,0 );

        /* Get and print solution of second QP. */
        QProblemB_getPrimalSolution( &example,xOpt );
        printf( "\nxOpt = [ %e, %e ];  objVal = %e\n\n", xOpt[0],xOpt[1],QProblemB_getObjVal(&example) );

        return 0;
}


/*
 *      end of file
 */