Option Strict Off Option Explicit On Public Class lpsolve55 'lpsolve version 5 routines '----------------------------------------------------------------------------------------------------------------------------- Public Declare Function add_column Lib "lpsolve55" Alias "add_column" (ByVal lp As IntPtr, ByVal column() As Double) As Boolean Public Declare Function add_columnex Lib "lpsolve55" Alias "add_columnex" (ByVal lp As IntPtr, ByVal count As Integer, ByVal column() As Double, ByVal rowno() As Integer) As Boolean Public Declare Function add_constraint Lib "lpsolve55" Alias "add_constraint" (ByVal lp As IntPtr, ByVal row() As Double, ByVal constr_type As lpsolve_constr_types, ByVal rh As Double) As Boolean Public Declare Function add_constraintex Lib "lpsolve55" Alias "add_constraintex" (ByVal lp As IntPtr, ByVal count As Integer, ByVal row() As Double, ByVal colno() As Integer, ByVal constr_type As lpsolve_constr_types, ByVal rh As Double) As Boolean Public Declare Function add_lag_con Lib "lpsolve55" Alias "add_lag_con" (ByVal lp As IntPtr, ByVal row() As Double, ByVal con_type As lpsolve_constr_types, ByVal rhs As Double) As Boolean Public Declare Function add_SOS Lib "lpsolve55" Alias "add_SOS" (ByVal lp As IntPtr, ByVal name As String, ByVal sostype As Integer, ByVal priority As Integer, ByVal count As Integer, ByVal sosvars() As Integer, ByVal weights() As Double) As Integer Public Declare Function column_in_lp Lib "lpsolve55" Alias "column_in_lp" (ByVal lp As IntPtr, ByVal column() As Double) As Integer Public Declare Function copy_lp Lib "lpsolve55" Alias "copy_lp" (ByVal lp As IntPtr) As Integer Public Declare Sub default_basis Lib "lpsolve55" Alias "default_basis" (ByVal lp As IntPtr) Public Declare Function del_column Lib "lpsolve55" Alias "del_column" (ByVal lp As IntPtr, ByVal column As Integer) As Boolean Public Declare Function del_constraint Lib "lpsolve55" Alias "del_constraint" (ByVal lp As IntPtr, ByVal del_row As Integer) As Boolean Public Declare Sub delete_lp Lib "lpsolve55" Alias "delete_lp" (ByVal lp As IntPtr) Public Declare Function dualize_lp Lib "lpsolve55" Alias "dualize_lp" (ByVal lp As IntPtr) As Boolean Public Declare Function get_anti_degen Lib "lpsolve55" Alias "get_anti_degen" (ByVal lp As IntPtr) As lpsolve_anti_degen Public Declare Function get_basis Lib "lpsolve55" Alias "get_basis" (ByVal lp As IntPtr, ByVal bascolumn() As Integer, ByVal nonbasic As Boolean) As Boolean Public Declare Function get_basiscrash Lib "lpsolve55" Alias "get_basiscrash" (ByVal lp As IntPtr) As lpsolve_basiscrash Public Declare Function get_bb_depthlimit Lib "lpsolve55" Alias "get_bb_depthlimit" (ByVal lp As IntPtr) As Integer Public Declare Function get_bb_floorfirst Lib "lpsolve55" Alias "get_bb_floorfirst" (ByVal lp As IntPtr) As lpsolve_branch Public Declare Function get_bb_rule Lib "lpsolve55" Alias "get_bb_rule" (ByVal lp As IntPtr) As lpsolve_BBstrategies Public Declare Function get_bounds_tighter Lib "lpsolve55" Alias "get_bounds_tighter" (ByVal lp As IntPtr) As Boolean Public Declare Function get_break_at_value Lib "lpsolve55" Alias "get_break_at_value" (ByVal lp As IntPtr) As Double Public Declare Function get_col_name Lib "lpsolve55" Alias "get_col_name" (ByVal lp As IntPtr, ByVal column As Integer) As String Public Declare Function get_column Lib "lpsolve55" Alias "get_column" (ByVal lp As IntPtr, ByVal col_nr As Integer, ByVal column() As Double) As Boolean Public Declare Function get_columnex Lib "lpsolve55" Alias "get_columnex" (ByVal lp As IntPtr, ByVal col_nr As Integer, ByVal column() As Double, ByVal nzrow() As Integer) As Integer Public Declare Function get_constr_type Lib "lpsolve55" Alias "get_constr_type" (ByVal lp As IntPtr, ByVal row As Integer) As lpsolve_constr_types Public Declare Function get_constr_value Lib "lpsolve55" Alias "get_constr_value" (ByVal lp As IntPtr, ByVal row As Integer, ByVal count As Integer, ByVal primsolution() As Double, ByVal nzindex() As Integer) As Double Public Declare Function get_constraints Lib "lpsolve55" Alias "get_constraints" (ByVal lp As IntPtr, ByVal constr() As Double) As Boolean Public Declare Function get_dual_solution Lib "lpsolve55" Alias "get_dual_solution" (ByVal lp As IntPtr, ByVal rc() As Double) As Boolean Public Declare Function get_epsb Lib "lpsolve55" Alias "get_epsb" (ByVal lp As IntPtr) As Double Public Declare Function get_epsd Lib "lpsolve55" Alias "get_epsd" (ByVal lp As IntPtr) As Double Public Declare Function get_epsel Lib "lpsolve55" Alias "get_epsel" (ByVal lp As IntPtr) As Double Public Declare Function get_epsint Lib "lpsolve55" Alias "get_epsint" (ByVal lp As IntPtr) As Double Public Declare Function get_epsperturb Lib "lpsolve55" Alias "get_epsperturb" (ByVal lp As IntPtr) As Double Public Declare Function get_epspivot Lib "lpsolve55" Alias "get_epspivot" (ByVal lp As IntPtr) As Double Public Declare Function get_improve Lib "lpsolve55" Alias "get_improve" (ByVal lp As IntPtr) As lpsolve_improves Public Declare Function get_infinite Lib "lpsolve55" Alias "get_infinite" (ByVal lp As IntPtr) As Double Public Declare Function get_lambda Lib "lpsolve55" Alias "get_lambda" (ByVal lp As IntPtr, ByVal lambda() As Double) As Boolean Public Declare Function get_lowbo Lib "lpsolve55" Alias "get_lowbo" (ByVal lp As IntPtr, ByVal column As Integer) As Double Public Declare Function get_lp_index Lib "lpsolve55" Alias "get_lp_index" (ByVal lp As IntPtr, ByVal orig_index As Integer) As Integer Public Declare Function get_lp_name Lib "lpsolve55" Alias "get_lp_name" (ByVal lp As IntPtr) As String Public Declare Function get_Lrows Lib "lpsolve55" Alias "get_Lrows" (ByVal lp As IntPtr) As Integer Public Declare Function get_mat Lib "lpsolve55" Alias "get_mat" (ByVal lp As IntPtr, ByVal row As Integer, ByVal column As Integer) As Double Public Declare Function get_max_level Lib "lpsolve55" Alias "get_max_level" (ByVal lp As IntPtr) As Integer Public Declare Function get_maxpivot Lib "lpsolve55" Alias "get_maxpivot" (ByVal lp As IntPtr) As Integer Public Declare Function get_mip_gap Lib "lpsolve55" Alias "get_mip_gap" (ByVal lp As IntPtr, ByVal absolute As Boolean) As Double Public Declare Function get_Ncolumns Lib "lpsolve55" Alias "get_Ncolumns" (ByVal lp As IntPtr) As Integer Public Declare Function get_negrange Lib "lpsolve55" Alias "get_negrange" (ByVal lp As IntPtr) As Double Public Declare Function get_nameindex Lib "lpsolve55" Alias "get_nameindex" (ByVal lp As IntPtr, ByVal name As String, ByVal isrow As Boolean) As Integer Public Declare Function get_nonzeros Lib "lpsolve55" Alias "get_nonzeros" (ByVal lp As IntPtr) As Integer Public Declare Function get_Norig_columns Lib "lpsolve55" Alias "get_Norig_columns" (ByVal lp As IntPtr) As Integer Public Declare Function get_Norig_rows Lib "lpsolve55" Alias "get_Norig_rows" (ByVal lp As IntPtr) As Integer Public Declare Function get_Nrows Lib "lpsolve55" Alias "get_Nrows" (ByVal lp As IntPtr) As Integer Public Declare Function get_obj_bound Lib "lpsolve55" Alias "get_obj_bound" (ByVal lp As IntPtr) As Double Public Declare Function get_objective Lib "lpsolve55" Alias "get_objective" (ByVal lp As IntPtr) As Double Public Declare Function get_orig_index Lib "lpsolve55" Alias "get_orig_index" (ByVal lp As IntPtr, ByVal lp_index As Integer) As Integer Public Declare Function get_origcol_name Lib "lpsolve55" Alias "get_origcol_name" (ByVal lp As IntPtr, ByVal column As Integer) As String Public Declare Function get_origrow_name Lib "lpsolve55" Alias "get_origrow_name" (ByVal lp As IntPtr, ByVal row As Integer) As String Public Declare Function get_pivoting Lib "lpsolve55" Alias "get_pivoting" (ByVal lp As IntPtr) As lpsolve_piv_rules Public Declare Function get_presolve Lib "lpsolve55" Alias "get_presolve" (ByVal lp As IntPtr) As lpsolve_presolve Public Declare Function get_presolveloops Lib "lpsolve55" Alias "get_presolveloops" (ByVal lp As IntPtr) As Integer Public Declare Function get_primal_solution Lib "lpsolve55" Alias "get_primal_solution" (ByVal lp As IntPtr, ByVal pv_Renamed() As Double) As Boolean Public Declare Function get_print_sol Lib "lpsolve55" Alias "get_print_sol" (ByVal lp As IntPtr) As Integer Public Declare Function get_PseudoCosts Lib "lpsolve55" Alias "get_PseudoCosts" (ByVal lp As IntPtr, ByVal clower() As Double, ByVal cupper() As Double, ByVal updatelimit() As Integer) As Boolean Public Declare Function get_rh Lib "lpsolve55" Alias "get_rh" (ByVal lp As IntPtr, ByVal row As Integer) As Double Public Declare Function get_rh_range Lib "lpsolve55" Alias "get_rh_range" (ByVal lp As IntPtr, ByVal row As Integer) As Double Public Declare Function get_row Lib "lpsolve55" Alias "get_row" (ByVal lp As IntPtr, ByVal row_nr As Integer, ByVal row() As Double) As Boolean Public Declare Function get_rowex Lib "lpsolve55" Alias "get_rowex" (ByVal lp As IntPtr, ByVal row_nr As Integer, ByVal row() As Double, ByVal colno() As Integer) As Integer Public Declare Function get_row_name Lib "lpsolve55" Alias "get_row_name" (ByVal lp As IntPtr, ByVal row As Integer) As String Public Declare Function get_scalelimit Lib "lpsolve55" Alias "get_scalelimit" (ByVal lp As IntPtr) As Double Public Declare Function get_scaling Lib "lpsolve55" Alias "get_scaling" (ByVal lp As IntPtr) As lpsolve_scales Public Declare Function get_sensitivity_obj Lib "lpsolve55" Alias "get_sensitivity_obj" (ByVal lp As IntPtr, ByVal objfrom() As Double, ByVal objtill() As Double) As Boolean Public Declare Function get_sensitivity_objex Lib "lpsolve55" Alias "get_sensitivity_objex" (ByVal lp As IntPtr, ByVal objfrom() As Double, ByVal objtill() As Double, ByVal objfromvalue() As Double, ByVal objtillvalue() As Double) As Boolean Public Declare Function get_sensitivity_rhs Lib "lpsolve55" Alias "get_sensitivity_rhs" (ByVal lp As IntPtr, ByVal duals() As Double, ByVal dualsfrom() As Double, ByVal dualstill() As Double) As Boolean Public Declare Function get_simplextype Lib "lpsolve55" Alias "get_simplextype" (ByVal lp As IntPtr) As lpsolve_simplextypes Public Declare Function get_solutioncount Lib "lpsolve55" Alias "get_solutioncount" (ByVal lp As IntPtr) As Integer Public Declare Function get_solutionlimit Lib "lpsolve55" Alias "get_solutionlimit" (ByVal lp As IntPtr) As Integer Public Declare Function get_status Lib "lpsolve55" Alias "get_status" (ByVal lp As IntPtr) As Integer Public Declare Function get_statustext Lib "lpsolve55" Alias "get_statustext" (ByVal lp As IntPtr, ByVal statuscode As Integer) As String Public Declare Function get_timeout Lib "lpsolve55" Alias "get_timeout" (ByVal lp As IntPtr) As Integer Public Declare Function get_total_iter Lib "lpsolve55" Alias "get_total_iter" (ByVal lp As IntPtr) As Long Public Declare Function get_total_nodes Lib "lpsolve55" Alias "get_total_nodes" (ByVal lp As IntPtr) As Long Public Declare Function get_upbo Lib "lpsolve55" Alias "get_upbo" (ByVal lp As IntPtr, ByVal column As Integer) As Double Public Declare Function get_var_branch Lib "lpsolve55" Alias "get_var_branch" (ByVal lp As IntPtr, ByVal column As Integer) As lpsolve_branch Public Declare Function get_var_dualresult Lib "lpsolve55" Alias "get_var_dualresult" (ByVal lp As IntPtr, ByVal index As Integer) As Double Public Declare Function get_var_primalresult Lib "lpsolve55" Alias "get_var_primalresult" (ByVal lp As IntPtr, ByVal index As Integer) As Double Public Declare Function get_var_priority Lib "lpsolve55" Alias "get_var_priority" (ByVal lp As IntPtr, ByVal column As Integer) As Integer Public Declare Function get_variables Lib "lpsolve55" Alias "get_variables" (ByVal lp As IntPtr, ByVal var() As Double) As Boolean Public Declare Function get_verbose Lib "lpsolve55" Alias "get_verbose" (ByVal lp As IntPtr) As Integer Public Declare Function get_working_objective Lib "lpsolve55" Alias "get_working_objective" (ByVal lp As IntPtr) As Double Public Declare Function guess_basis Lib "lpsolve55" Alias "guess_basis" (ByVal lp As IntPtr, ByVal guessvector() As Double, ByVal basisvector() As Integer) As Boolean Public Declare Function has_BFP Lib "lpsolve55" Alias "has_BFP" (ByVal lp As IntPtr) As Boolean Public Declare Function has_XLI Lib "lpsolve55" Alias "has_XLI" (ByVal lp As IntPtr) As Boolean Public Declare Function is_add_rowmode Lib "lpsolve55" Alias "is_add_rowmode" (ByVal lp As IntPtr) As Boolean Public Declare Function is_anti_degen Lib "lpsolve55" Alias "is_anti_degen" (ByVal lp As IntPtr, ByVal testmask As lpsolve_anti_degen) As Boolean Public Declare Function is_binary Lib "lpsolve55" Alias "is_binary" (ByVal lp As IntPtr, ByVal column As Integer) As Boolean Public Declare Function is_break_at_first Lib "lpsolve55" Alias "is_break_at_first" (ByVal lp As IntPtr) As Boolean Public Declare Function is_constr_type Lib "lpsolve55" Alias "is_constr_type" (ByVal lp As IntPtr, ByVal row As Integer, ByVal mask As Integer) As Boolean Public Declare Function is_debug Lib "lpsolve55" Alias "is_debug" (ByVal lp As IntPtr) As Boolean Public Declare Function is_feasible Lib "lpsolve55" Alias "is_feasible" (ByVal lp As IntPtr, ByVal values() As Double, ByVal threshold As Double) As Boolean Public Declare Function is_infinite Lib "lpsolve55" Alias "is_infinite" (ByVal lp As IntPtr, ByVal value As Double) As Boolean Public Declare Function is_int Lib "lpsolve55" Alias "is_int" (ByVal lp As IntPtr, ByVal column As Integer) As Boolean Public Declare Function is_integerscaling Lib "lpsolve55" Alias "is_integerscaling" (ByVal lp As IntPtr) As Boolean Public Declare Function is_lag_trace Lib "lpsolve55" Alias "is_lag_trace" (ByVal lp As IntPtr) As Boolean Public Declare Function is_maxim Lib "lpsolve55" Alias "is_maxim" (ByVal lp As IntPtr) As Boolean Public Declare Function is_nativeBFP Lib "lpsolve55" Alias "is_nativeBFP" (ByVal lp As IntPtr) As Boolean Public Declare Function is_nativeXLI Lib "lpsolve55" Alias "is_nativeXLI" (ByVal lp As IntPtr) As Boolean Public Declare Function is_negative Lib "lpsolve55" Alias "is_negative" (ByVal lp As IntPtr, ByVal column As Integer) As Boolean Public Declare Function is_piv_mode Lib "lpsolve55" Alias "is_piv_mode" (ByVal lp As IntPtr, ByVal testmask As lpsolve_piv_rules) As Boolean Public Declare Function is_piv_rule Lib "lpsolve55" Alias "is_piv_rule" (ByVal lp As IntPtr, ByVal rule As lpsolve_piv_rules) As Boolean Public Declare Function is_presolve Lib "lpsolve55" Alias "is_presolve" (ByVal lp As IntPtr, ByVal testmask As lpsolve_presolve) As Boolean Public Declare Function is_scalemode Lib "lpsolve55" Alias "is_scalemode" (ByVal lp As IntPtr, ByVal testmask As lpsolve_scales) As Boolean Public Declare Function is_scaletype Lib "lpsolve55" Alias "is_scaletype" (ByVal lp As IntPtr, ByVal scaletype As lpsolve_scales) As Boolean Public Declare Function is_semicont Lib "lpsolve55" Alias "is_semicont" (ByVal lp As IntPtr, ByVal column As Integer) As Boolean Public Declare Function is_SOS_var Lib "lpsolve55" Alias "is_SOS_var" (ByVal lp As IntPtr, ByVal column As Integer) As Boolean Public Declare Function is_trace Lib "lpsolve55" Alias "is_trace" (ByVal lp As IntPtr) As Boolean Public Declare Function is_unbounded Lib "lpsolve55" Alias "is_unbounded" (ByVal lp As IntPtr, ByVal column As Integer) As Boolean Public Declare Function is_use_names Lib "lpsolve55" Alias "is_use_names" (ByVal lp As IntPtr, ByVal isrow As Boolean) As Boolean Public Declare Sub version Lib "lpsolve55" Alias "lp_solve_version" (ByRef majorversion As Integer, ByRef minorversion As Integer, ByRef release As Integer, ByRef build As Integer) Public Declare Function make_lp Lib "lpsolve55" Alias "make_lp" (ByVal rows As Integer, ByVal columns As Integer) As IntPtr Public Declare Function resize_lp Lib "lpsolve55" Alias "resize_lp" (ByVal lp As IntPtr, ByVal rows As Integer, ByVal columns As Integer) As Boolean Public Declare Sub print_constraints Lib "lpsolve55" Alias "print_constraints" (ByVal lp As IntPtr, ByVal columns As Integer) Public Declare Function print_debugdump Lib "lpsolve55" Alias "print_debugdump" (ByVal lp As IntPtr, ByVal filename As String) As Boolean Public Declare Sub print_duals Lib "lpsolve55" Alias "print_duals" (ByVal lp As IntPtr) Public Declare Sub print_lp Lib "lpsolve55" Alias "print_lp" (ByVal lp As IntPtr) Public Declare Sub print_objective Lib "lpsolve55" Alias "print_objective" (ByVal lp As IntPtr) Public Declare Sub print_scales Lib "lpsolve55" Alias "print_scales" (ByVal lp As IntPtr) Public Declare Sub print_solution Lib "lpsolve55" Alias "print_solution" (ByVal lp As IntPtr, ByVal columns As Integer) Public Declare Sub print_str Lib "lpsolve55" Alias "print_str" (ByVal lp As IntPtr, ByVal str_Renamed As String) Public Declare Sub print_tableau Lib "lpsolve55" Alias "print_tableau" (ByVal lp As IntPtr) Public Delegate Function abortfunc(ByVal lp As IntPtr, ByVal userhandle As Integer) As Integer Public Declare Sub put_abortfunc Lib "lpsolve55" Alias "put_abortfunc" (ByVal lp As IntPtr, ByVal newctrlc As abortfunc, ByVal ctrlchandle As Integer) Public Delegate Sub logfunc(ByVal lp As IntPtr, ByVal userhandle As Integer, ByVal buf As String) Public Declare Sub put_logfunc Lib "lpsolve55" Alias "put_logfunc" (ByVal lp As IntPtr, ByVal newlog As logfunc, ByVal loghandle As Integer) Public Delegate Sub msgfunc(ByVal lp As IntPtr, ByVal userhandle As Integer, ByVal message As lpsolve_msgmask) Public Declare Sub put_msgfunc Lib "lpsolve55" Alias "put_msgfunc" (ByVal lp As IntPtr, ByVal newmsg As msgfunc, ByVal msghandle As Integer, ByVal mask As lpsolve_msgmask) Public Declare Function read_basis Lib "lpsolve55" Alias "read_basis" (ByVal lp As IntPtr, ByVal filename As String, ByVal info As String) As Boolean Public Declare Function read_freeMPS Lib "lpsolve55" Alias "read_freeMPS" (ByVal filename As String, ByVal options As Integer) As Integer Public Declare Function read_LP Lib "lpsolve55" Alias "read_LP" (ByVal filename As String, ByVal verbose As Integer, ByVal lp_name As String) As Integer Public Declare Function read_MPS Lib "lpsolve55" Alias "read_MPS" (ByVal filename As String, ByVal options As Integer) As Integer Public Declare Function read_XLI Lib "lpsolve55" Alias "read_XLI" (ByVal xliname As String, ByVal modelname As String, ByVal dataname As String, ByVal options As String, ByVal verbose As Integer) As Integer Public Declare Function read_params Lib "lpsolve55" Alias "read_params" (ByVal lp As IntPtr, ByVal filename As String, ByVal options As String) As Boolean Public Declare Sub reset_basis Lib "lpsolve55" Alias "reset_basis" (ByVal lp As IntPtr) Public Declare Sub reset_params Lib "lpsolve55" Alias "reset_params" (ByVal lp As IntPtr) Public Declare Function set_add_rowmode Lib "lpsolve55" Alias "set_add_rowmode" (ByVal lp As IntPtr, ByVal turnon As Boolean) As Boolean Public Declare Sub set_anti_degen Lib "lpsolve55" Alias "set_anti_degen" (ByVal lp As IntPtr, ByVal anti_degen As lpsolve_anti_degen) Public Declare Function set_basis Lib "lpsolve55" Alias "set_basis" (ByVal lp As IntPtr, ByVal bascolumn() As Integer, ByVal nonbasic As Boolean) As Boolean Public Declare Sub set_basiscrash Lib "lpsolve55" Alias "set_basiscrash" (ByVal lp As IntPtr, ByVal mode As lpsolve_basiscrash) Public Declare Sub set_basisvar Lib "lpsolve55" Alias "set_basisvar" (ByVal lp As IntPtr, ByVal basisPos As Integer, ByVal enteringCol As Integer) Public Declare Sub set_bb_depthlimit Lib "lpsolve55" Alias "set_bb_depthlimit" (ByVal lp As IntPtr, ByVal bb_maxlevel As Integer) Public Declare Sub set_bb_floorfirst Lib "lpsolve55" Alias "set_bb_floorfirst" (ByVal lp As IntPtr, ByVal bb_floorfirst As lpsolve_branch) Public Declare Sub set_bb_rule Lib "lpsolve55" Alias "set_bb_rule" (ByVal lp As IntPtr, ByVal bb_rule As lpsolve_BBstrategies) Public Declare Function set_BFP Lib "lpsolve55" Alias "set_BFP" (ByVal lp As IntPtr, ByVal filename As String) As Boolean Public Declare Function set_binary Lib "lpsolve55" Alias "set_binary" (ByVal lp As IntPtr, ByVal column As Integer, ByVal must_be_bin As Boolean) As Boolean Public Declare Function set_bounds Lib "lpsolve55" Alias "set_bounds" (ByVal lp As IntPtr, ByVal column As Integer, ByVal lower As Double, ByVal upper As Double) As Boolean Public Declare Sub set_bounds_tighter Lib "lpsolve55" Alias "set_bounds_tighter" (ByVal lp As IntPtr, ByVal tighten As Boolean) Public Declare Sub set_break_at_first Lib "lpsolve55" Alias "set_break_at_first" (ByVal lp As IntPtr, ByVal break_at_first As Boolean) Public Declare Sub set_break_at_value Lib "lpsolve55" Alias "set_break_at_value" (ByVal lp As IntPtr, ByVal break_at_value As Double) Public Declare Function set_col_name Lib "lpsolve55" Alias "set_col_name" (ByVal lp As IntPtr, ByVal column As Integer, ByVal new_name As String) As Boolean Public Declare Function set_column Lib "lpsolve55" Alias "set_column" (ByVal lp As IntPtr, ByVal col_no As Integer, ByVal column() As Double) As Boolean Public Declare Function set_columnex Lib "lpsolve55" Alias "set_columnex" (ByVal lp As IntPtr, ByVal col_no As Integer, ByVal count As Integer, ByVal column() As Double, ByVal rowno() As Integer) As Boolean Public Declare Function set_constr_type Lib "lpsolve55" Alias "set_constr_type" (ByVal lp As IntPtr, ByVal row As Integer, ByVal con_type As lpsolve_constr_types) As Boolean Public Declare Sub set_debug Lib "lpsolve55" Alias "set_debug" (ByVal lp As IntPtr, ByVal debug_ As Boolean) Public Declare Sub set_epsb Lib "lpsolve55" Alias "set_epsb" (ByVal lp As IntPtr, ByVal epsb As Double) Public Declare Sub set_epsd Lib "lpsolve55" Alias "set_epsd" (ByVal lp As IntPtr, ByVal epsd As Double) Public Declare Sub set_epsel Lib "lpsolve55" Alias "set_epsel" (ByVal lp As IntPtr, ByVal epsel As Double) Public Declare Sub set_epsint Lib "lpsolve55" Alias "set_epsint" (ByVal lp As IntPtr, ByVal epsint As Double) Public Declare Function set_epslevel Lib "lpsolve55" Alias "set_epslevel" (ByVal lp As IntPtr, ByVal epslevel As Integer) As Boolean Public Declare Sub set_epsperturb Lib "lpsolve55" Alias "set_epsperturb" (ByVal lp As IntPtr, ByVal epsperturb As Double) Public Declare Sub set_epspivot Lib "lpsolve55" Alias "set_epspivot" (ByVal lp As IntPtr, ByVal epspivot As Double) Public Declare Sub set_improve Lib "lpsolve55" Alias "set_improve" (ByVal lp As IntPtr, ByVal improve As lpsolve_improves) Public Declare Sub set_infinite Lib "lpsolve55" Alias "set_infinite" (ByVal lp As IntPtr, ByVal infinite As Double) Public Declare Function set_int Lib "lpsolve55" Alias "set_int" (ByVal lp As IntPtr, ByVal column As Integer, ByVal must_be_int As Boolean) As Boolean Public Declare Sub set_lag_trace Lib "lpsolve55" Alias "set_lag_trace" (ByVal lp As IntPtr, ByVal lag_trace As Boolean) Public Declare Function set_lowbo Lib "lpsolve55" Alias "set_lowbo" (ByVal lp As IntPtr, ByVal column As Integer, ByVal value As Double) As Boolean Public Declare Function set_lp_name Lib "lpsolve55" Alias "set_lp_name" (ByVal lp As IntPtr, ByVal lpname As String) As Boolean Public Declare Function set_mat Lib "lpsolve55" Alias "set_mat" (ByVal lp As IntPtr, ByVal row As Integer, ByVal column As Integer, ByVal value As Double) As Boolean Public Declare Sub set_maxim Lib "lpsolve55" Alias "set_maxim" (ByVal lp As IntPtr) Public Declare Sub set_maxpivot Lib "lpsolve55" Alias "set_maxpivot" (ByVal lp As IntPtr, ByVal max_num_inv As Integer) Public Declare Sub set_minim Lib "lpsolve55" Alias "set_minim" (ByVal lp As IntPtr) Public Declare Sub set_mip_gap Lib "lpsolve55" Alias "set_mip_gap" (ByVal lp As IntPtr, ByVal absolute As Boolean, ByVal mip_gap As Double) Public Declare Sub set_negrange Lib "lpsolve55" Alias "set_negrange" (ByVal lp As IntPtr, ByVal negrange As Double) Public Declare Function set_obj Lib "lpsolve55" Alias "set_obj" (ByVal lp As IntPtr, ByVal column As Integer, ByVal value As Double) As Boolean Public Declare Sub set_obj_bound Lib "lpsolve55" Alias "set_obj_bound" (ByVal lp As IntPtr, ByVal obj_bound As Double) Public Declare Function set_obj_fn Lib "lpsolve55" Alias "set_obj_fn" (ByVal lp As IntPtr, ByVal row() As Double) As Boolean Public Declare Function set_obj_fnex Lib "lpsolve55" Alias "set_obj_fnex" (ByVal lp As IntPtr, ByVal count As Integer, ByVal row() As Double, ByVal colno() As Integer) As Boolean Public Declare Function set_outputfile Lib "lpsolve55" Alias "set_outputfile" (ByVal lp As IntPtr, ByVal filename As String) As Boolean Public Declare Sub set_pivoting Lib "lpsolve55" Alias "set_pivoting" (ByVal lp As IntPtr, ByVal piv_rule As lpsolve_piv_rules) Public Declare Sub set_preferdual Lib "lpsolve55" Alias "set_preferdual" (ByVal lp As IntPtr, ByVal dodual As Boolean) Public Declare Sub set_presolve Lib "lpsolve55" Alias "set_presolve" (ByVal lp As IntPtr, ByVal do_presolve As lpsolve_presolve, ByVal maxloops As Integer) Public Declare Sub set_print_sol Lib "lpsolve55" Alias "set_print_sol" (ByVal lp As IntPtr, ByVal print_sol As Integer) Public Declare Function set_PseudoCosts Lib "lpsolve55" Alias "set_PseudoCosts" (ByVal lp As IntPtr, ByVal clower() As Double, ByVal cupper() As Double, ByVal updatelimit() As Integer) As Boolean Public Declare Function set_rh Lib "lpsolve55" Alias "set_rh" (ByVal lp As IntPtr, ByVal row As Integer, ByVal value As Double) As Boolean Public Declare Function set_rh_range Lib "lpsolve55" Alias "set_rh_range" (ByVal lp As IntPtr, ByVal row As Integer, ByVal deltavalue As Double) As Boolean Public Declare Sub set_rh_vec Lib "lpsolve55" Alias "set_rh_vec" (ByVal lp As IntPtr, ByVal rh() As Double) Public Declare Function set_row Lib "lpsolve55" Alias "set_row" (ByVal lp As IntPtr, ByVal row_no As Integer, ByVal row() As Double) As Boolean Public Declare Function set_row_name Lib "lpsolve55" Alias "set_row_name" (ByVal lp As IntPtr, ByVal row As Integer, ByVal new_name As String) As Boolean Public Declare Function set_rowex Lib "lpsolve55" Alias "set_rowex" (ByVal lp As IntPtr, ByVal row_no As Integer, ByVal count As Integer, ByVal row() As Double, ByVal colno() As Integer) As Boolean Public Declare Sub set_scalelimit Lib "lpsolve55" Alias "set_scalelimit" (ByVal lp As IntPtr, ByVal scalelimit As Double) Public Declare Sub set_scaling Lib "lpsolve55" Alias "set_scaling" (ByVal lp As IntPtr, ByVal scalemode As lpsolve_scales) Public Declare Function set_semicont Lib "lpsolve55" Alias "set_semicont" (ByVal lp As IntPtr, ByVal column As Integer, ByVal must_be_sc As Boolean) As Boolean Public Declare Sub set_sense Lib "lpsolve55" Alias "set_sense" (ByVal lp As IntPtr, ByVal maximize As Boolean) Public Declare Sub set_simplextype Lib "lpsolve55" Alias "set_simplextype" (ByVal lp As IntPtr, ByVal simplextype As lpsolve_simplextypes) Public Declare Sub set_solutionlimit Lib "lpsolve55" Alias "set_solutionlimit" (ByVal lp As IntPtr, ByVal limit As Integer) Public Declare Sub set_timeout Lib "lpsolve55" Alias "set_timeout" (ByVal lp As IntPtr, ByVal sectimeout As Integer) Public Declare Sub set_trace Lib "lpsolve55" Alias "set_trace" (ByVal lp As IntPtr, ByVal trace As Boolean) Public Declare Function set_unbounded Lib "lpsolve55" Alias "set_unbounded" (ByVal lp As IntPtr, ByVal column As Integer) As Boolean Public Declare Function set_upbo Lib "lpsolve55" Alias "set_upbo" (ByVal lp As IntPtr, ByVal column As Integer, ByVal value As Double) As Boolean Public Declare Sub set_use_names Lib "lpsolve55" Alias "set_use_names" (ByVal lp As IntPtr, ByVal isrow As Boolean, ByVal use_names As Boolean) Public Declare Function set_var_branch Lib "lpsolve55" Alias "set_var_branch" (ByVal lp As IntPtr, ByVal column As Integer, ByVal branch_mode As lpsolve_branch) As Boolean Public Declare Function set_var_weights Lib "lpsolve55" Alias "set_var_weights" (ByVal lp As IntPtr, ByVal weights() As Double) As Boolean Public Declare Sub set_verbose Lib "lpsolve55" Alias "set_verbose" (ByVal lp As IntPtr, ByVal verbose As Integer) Public Declare Function set_XLI Lib "lpsolve55" Alias "set_XLI" (ByVal lp As IntPtr, ByVal filename As String) As Boolean Public Declare Function solve Lib "lpsolve55" Alias "solve" (ByVal lp As IntPtr) As lpsolve_return Public Declare Function str_add_column Lib "lpsolve55" Alias "str_add_column" (ByVal lp As IntPtr, ByVal col_string As String) As Boolean Public Declare Function str_add_constraint Lib "lpsolve55" Alias "str_add_constraint" (ByVal lp As IntPtr, ByVal row_string As String, ByVal constr_type As lpsolve_constr_types, ByVal rh As Double) As Boolean Public Declare Function str_add_lag_con Lib "lpsolve55" Alias "str_add_lag_con" (ByVal lp As IntPtr, ByVal row_string As String, ByVal con_type As lpsolve_constr_types, ByVal rhs As Double) As Boolean Public Declare Function str_set_obj_fn Lib "lpsolve55" Alias "str_set_obj_fn" (ByVal lp As IntPtr, ByVal row_string As String) As Boolean Public Declare Function str_set_rh_vec Lib "lpsolve55" Alias "str_set_rh_vec" (ByVal lp As IntPtr, ByVal rh_string As String) As Boolean Public Declare Function time_elapsed Lib "lpsolve55" Alias "time_elapsed" (ByVal lp As IntPtr) As Double Public Declare Sub unscale Lib "lpsolve55" Alias "unscale" (ByVal lp As IntPtr) Public Declare Function write_basis Lib "lpsolve55" Alias "write_basis" (ByVal lp As IntPtr, ByVal filename As String) As Boolean Public Declare Function write_freemps Lib "lpsolve55" Alias "write_freemps" (ByVal lp As IntPtr, ByVal filename As String) As Boolean Public Declare Function write_lp Lib "lpsolve55" Alias "write_lp" (ByVal lp As IntPtr, ByVal filename As String) As Boolean Public Declare Function write_mps Lib "lpsolve55" Alias "write_mps" (ByVal lp As IntPtr, ByVal filename As String) As Boolean Public Declare Function write_XLI Lib "lpsolve55" Alias "write_XLI" (ByVal lp As IntPtr, ByVal filename As String, ByVal options As String, ByVal results As Boolean) As Boolean Public Declare Function write_params Lib "lpsolve55" Alias "write_params" (ByVal lp As IntPtr, ByVal filename As String, ByVal options As String) As Boolean '----------------------------------------------------------------------------------------------------------------------------- 'possible type of constraints Public Enum lpsolve_constr_types LE = 1 EQ = 3 GE = 2 FR = 0 End Enum 'Possible Scalings Public Enum lpsolve_scales SCALE_EXTREME = 1 SCALE_RANGE = 2 SCALE_MEAN = 3 SCALE_GEOMETRIC = 4 SCALE_CURTISREID = 7 SCALE_QUADRATIC = 8 SCALE_LOGARITHMIC = 16 SCALE_USERWEIGHT = 31 SCALE_POWER2 = 32 SCALE_EQUILIBRATE = 64 SCALE_INTEGERS = 128 End Enum 'Possible Improvements Public Enum lpsolve_improves IMPROVE_NONE = 0 IMPROVE_SOLUTION = 1 IMPROVE_DUALFEAS = 2 IMPROVE_THETAGAP = 4 IMPROVE_BBSIMPLEX = 8 IMPROVE_DEFAULT = (IMPROVE_DUALFEAS + IMPROVE_THETAGAP) IMPROVE_INVERSE = (IMPROVE_SOLUTION + IMPROVE_THETAGAP) End Enum Public Enum lpsolve_piv_rules PRICER_FIRSTINDEX = 0 PRICER_DANTZIG = 1 PRICER_DEVEX = 2 PRICER_STEEPESTEDGE = 3 PRICE_PRIMALFALLBACK = 4 PRICE_MULTIPLE = 8 PRICE_PARTIAL = 16 PRICE_ADAPTIVE = 32 PRICE_HYBRID = 64 PRICE_RANDOMIZE = 128 PRICE_AUTOPARTIALCOLS = 256 PRICE_AUTOPARTIALROWS = 512 PRICE_LOOPLEFT = 1024 PRICE_LOOPALTERNATE = 2048 PRICE_AUTOPARTIAL = lpsolve_piv_rules.PRICE_AUTOPARTIALCOLS + lpsolve_piv_rules.PRICE_AUTOPARTIALROWS End Enum Public Enum lpsolve_presolve PRESOLVE_NONE = 0 PRESOLVE_ROWS = 1 PRESOLVE_COLS = 2 PRESOLVE_LINDEP = 4 PRESOLVE_SOS = 32 PRESOLVE_REDUCEMIP = 64 PRESOLVE_KNAPSACK = 128 PRESOLVE_ELIMEQ2 = 256 PRESOLVE_IMPLIEDFREE = 512 PRESOLVE_REDUCEGCD = 1024 PRESOLVE_PROBEFIX = 2048 PRESOLVE_PROBEREDUCE = 4096 PRESOLVE_ROWDOMINATE = 8192 PRESOLVE_COLDOMINATE = 16384 PRESOLVE_MERGEROWS = 32768 PRESOLVE_IMPLIEDSLK = 65536 PRESOLVE_COLFIXDUAL = 131072 PRESOLVE_BOUNDS = 262144 PRESOLVE_DUALS = 524288 PRESOLVE_SENSDUALS = 1048576 End Enum Public Enum lpsolve_anti_degen ANTIDEGEN_NONE = 0 ANTIDEGEN_FIXEDVARS = 1 ANTIDEGEN_COLUMNCHECK = 2 ANTIDEGEN_STALLING = 4 ANTIDEGEN_NUMFAILURE = 8 ANTIDEGEN_LOSTFEAS = 16 ANTIDEGEN_INFEASIBLE = 32 ANTIDEGEN_DYNAMIC = 64 ANTIDEGEN_DURINGBB = 128 ANTIDEGEN_RHSPERTURB = 256 ANTIDEGEN_BOUNDFLIP = 512 End Enum Public Enum lpsolve_basiscrash CRASH_NOTHING = 0 CRASH_MOSTFEASIBLE = 2 End Enum Public Enum lpsolve_simplextypes SIMPLEX_PRIMAL_PRIMAL = 5 SIMPLEX_DUAL_PRIMAL = 6 SIMPLEX_PRIMAL_DUAL = 9 SIMPLEX_DUAL_DUAL = 10 End Enum 'B&B strategies Public Enum lpsolve_BBstrategies NODE_FIRSTSELECT = 0 NODE_GAPSELECT = 1 NODE_RANGESELECT = 2 NODE_FRACTIONSELECT = 3 NODE_PSEUDOCOSTSELECT = 4 NODE_PSEUDONONINTSELECT = 5 NODE_PSEUDORATIOSELECT = 6 NODE_USERSELECT = 7 NODE_WEIGHTREVERSEMODE = 8 NODE_BRANCHREVERSEMODE = 16 NODE_GREEDYMODE = 32 NODE_PSEUDOCOSTMODE = 64 NODE_DEPTHFIRSTMODE = 128 NODE_RANDOMIZEMODE = 256 NODE_GUBMODE = 512 NODE_DYNAMICMODE = 1024 NODE_RESTARTMODE = 2048 NODE_BREADTHFIRSTMODE = 4096 NODE_AUTOORDER = 8192 NODE_RCOSTFIXING = 16384 NODE_STRONGINIT = 32768 End Enum 'possible return values of lp solver Public Enum lpsolve_return NOMEMORY = -2 OPTIMAL = 0 SUBOPTIMAL = 1 INFEASIBLE = 2 UNBOUNDED = 3 DEGENERATE = 4 NUMFAILURE = 5 USERABORT = 6 TIMEOUT = 7 PRESOLVED = 9 PROCFAIL = 10 PROCBREAK = 11 FEASFOUND = 12 NOFEASFOUND = 13 End Enum 'possible branch values Public Enum lpsolve_branch BRANCH_CEILING = 0 BRANCH_FLOOR = 1 BRANCH_AUTOMATIC = 2 BRANCH_DEFAULT = 3 End Enum 'possible message values Public Enum lpsolve_msgmask MSG_PRESOLVE = 1 MSG_LPFEASIBLE = 8 MSG_LPOPTIMAL = 16 MSG_MILPEQUAL = 32 MSG_MILPFEASIBLE = 128 MSG_MILPBETTER = 512 End Enum Private Shared Function SetEnvironmentVariable(ByRef name As String, ByRef value As String) As Boolean Environment.SetEnvironmentVariable(name, value, EnvironmentVariableTarget.Process) Return True End Function Private Shared Function GetEnvironmentVariable(ByRef name As String) As String Return Environment.GetEnvironmentVariable(name, EnvironmentVariableTarget.Process) End Function Shared Function Init(Optional ByVal dllPath As String = "") As Boolean Static bEnvChanged As Boolean Dim Path As String Dim buf As String If Len(dllPath) = 0 Then dllPath = CurDir() End If buf = dllPath If Right(buf, 1) <> "\" Then buf = buf & "\" End If buf = buf & "lpsolve55" On Error Resume Next Init = (Len(Dir(buf, FileAttribute.Normal)) > 0) If Init Then If Not bEnvChanged Then bEnvChanged = True Path = GetEnvironmentVariable("PATH") If InStr(1, Path & ";", dllPath & ";", CompareMethod.Text) = 0 Then SetEnvironmentVariable("PATH", dllPath & ";" & Path) End If End If End If End Function End Class