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Diffstat (limited to 'macros/mps_linprog.sci')
-rw-r--r-- | macros/mps_linprog.sci | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/macros/mps_linprog.sci b/macros/mps_linprog.sci new file mode 100644 index 0000000..55f3edf --- /dev/null +++ b/macros/mps_linprog.sci @@ -0,0 +1,90 @@ +// Copyright (C) 2015 - IIT Bombay - FOSSEE +// +// Author: Bhanu Priya Sayal, Guru Pradeep Reddy +// Organization: FOSSEE, IIT Bombay +// Email:bhanupriyasayal@gmail.com,gurupradeept@gmail.com +// This file must be used under the terms of the CeCILL. +// This source file is licensed as described in the file COPYING, which +// you should have received as part of this distribution. The terms +// are also available at +// http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt + + +function [xopt,fopt,exitflag,output,lambda] =mps_linprog(varargin) + + //To check the number of input and output argument + [lhs , rhs] = argn(); + + //To check the number of argument given by user + if ( rhs < 1 | rhs > 2) then + errmsg = msprintf(gettext("%s: Unexpected number of input arguments : %d provided while should be in the set of [1 2]"),"linprog",rhs); + error(errmsg) + end + mpsFile = varargin(1); + + [sizeFile isFile] = fileinfo(mpsFile); + if(isFile ~= 0) then + errmsg = msprintf(gettext("%s: File is not present at the given location"),"linprog",rhs); + error(errmsg) + end + + if ( rhs<2 | size(varargin(2)) ==0 ) then + param = list(); + else + param =varargin(2); + end + + if (type(param) ~= 15) then + errmsg = msprintf(gettext("%s: options should be a list "), "mps_linprog"); + error(errmsg); + end + + if (modulo(size(param),2)) then + errmsg = msprintf(gettext("%s: Size of parameters should be even"), "mps_linprog"); + error(errmsg); + end + options = list("MaxIter" , [3000],); + + for i = 1:(size(param))/2 + select param(2*i-1) + case "MaxIter" then + options(2*i) = param(2*i); + end + end + //Calling the function by passing the required parameters + + [xopt,fopt,status,iter,Zl,dual] = rmps(mpsFile,options); + + xopt = xopt'; + fopt=fopt; + exitflag = status; + output = struct("Iterations" , []); + output.Iterations = iter; + lambda = struct("reduced_cost" , [], .. + "dual" ,[]); + + lambda.reduced_cost = Zl; + lambda.dual =dual; + + select status + + case 0 then + printf("\nOptimal Solution.\n"); + case 1 then + printf("\nPrimal Infeasible.\n"); + case 2 then + printf("\nDual Infeasible.\n"); + case 3 then + printf("\nIteration limit reached.\n"); + case 4 then + printf("\nNumerical Difficulties.\n"); + case 5 then + printf("\nPrimal Objective limit reached.\n"); + case 6 then + printf("\nDual Objective limit reached.\n"); + else + printf("\nInvalid status returned. Notify the Toolbox authors\n"); + break; + end + +endfunction |