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/*
* Symphony Toolbox
* Functions for setting the coefficients of the objective and the sense (minimization/maximization)
* By Keyur Joshi
*/
#include "symphony.h"
#include "sci_iofunc.hpp"
extern sym_environment* global_sym_env; //defined in globals.cpp
extern "C" {
#include "api_scilab.h"
#include "Scierror.h"
#include "sciprint.h"
#include "BOOL.h"
#include <localization.h>
int sci_sym_setObjCoeff(char *fname){
//error management variable
SciErr sciErr;
int iRet;
//data declarations
int *varAddress,varIndex,numVars;
double inputDouble,newCoeff;
//ensure that environment is active
if(global_sym_env==NULL){
sciprint("Error: Symphony environment not initialized. Please run 'sym_open()' first.\n");
return 1;
}
//code to check arguments and get them
CheckInputArgument(pvApiCtx,2,2) ;
CheckOutputArgument(pvApiCtx,1,1) ;
//get argument 1: index of variable whose coefficient is to be changed
if(getUIntFromScilab(1,&varIndex))
return 1;
iRet=sym_get_num_cols(global_sym_env,&numVars);
if(iRet==FUNCTION_TERMINATED_ABNORMALLY){
Scierror(999, "An error occured. Has a problem been loaded?\n");
return 1;
}else if(varIndex>=numVars){
Scierror(999, "An error occured. Variable index must be a number between 0 and %d.\n",numVars-1);
return 1;
}
//get argument 2: new coefficient
if(getDoubleFromScilab(2,&newCoeff))
return 1;
iRet=sym_set_obj_coeff(global_sym_env,varIndex,newCoeff);
if(iRet==FUNCTION_TERMINATED_ABNORMALLY){
Scierror(999, "An error occured. Has a problem been loaded?\n");
return 1;
}else{
sciprint("Coefficient successfully changed.\n");
}
//code to give output
if(return0toScilab())
return 1;
return 0;
}
int sci_sym_setObjSense(char *fname){
//error management variable
SciErr sciErr;
int iRet;
//data declarations
int *varAddress;
double objSense;
//ensure that environment is active
if(global_sym_env==NULL){
sciprint("Error: Symphony environment not initialized. Please run 'sym_open()' first.\n");
return 1;
}
//code to check arguments and get them
CheckInputArgument(pvApiCtx,1,1) ;
CheckOutputArgument(pvApiCtx,1,1) ;
//code to process input
sciErr = getVarAddressFromPosition(pvApiCtx, 1, &varAddress);
if (sciErr.iErr)
{
printError(&sciErr, 0);
return 1;
}
if ( !isDoubleType(pvApiCtx,varAddress) || isVarComplex(pvApiCtx,varAddress) )
{
Scierror(999, "Wrong type for input argument #1:\nEither 1 (sym_minimize) or -1 (sym_maximize) is expected.\n");
return 1;
}
iRet = getScalarDouble(pvApiCtx, varAddress, &objSense);
if(iRet || (objSense!=-1 && objSense!=1))
{
Scierror(999, "Wrong type for input argument #1:\nEither 1 (sym_minimize) or -1 (sym_maximize) is expected.\n");
return 1;
}
iRet=sym_set_obj_sense(global_sym_env,objSense);
if(iRet==FUNCTION_TERMINATED_ABNORMALLY){
Scierror(999, "An error occured.\n");
return 1;
}else{
if(objSense==1)
sciprint("The solver has been set to minimize the objective.\n");
else
sciprint("The solver has been set to maximize the objective.\n");
}
//code to give output
if(return0toScilab())
return 1;
return 0;
}
}
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