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lpobject.pas
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(*
* lp_solve v5 component for Delphi v5,6,7 & FPC compiler v1.9.x
* Licence LGPL
* Author: Henri Gourvest
* email: hgourvest@progdigy.com
* homepage: http://www.progdigy.com
* date: 07/21/2004
*
* modified by avk
* date: 04/02/2019
*)
unit LpObject;
{$I lpsolve.inc}
{$IFDEF FPC}
{$MODE DELPHI}
{$ENDIF}
{$POINTERMATH ON}
{$INLINE ON}
interface
uses
Classes, SysUtils, Dialogs, LpSolve, LazFileUtils;
type
TVerbose = (vNeutral, vCritical, vSevere, vImportant, vNormal, vDetailed, vFull);
TConstrType = (ctLE, ctGE, ctEQ);
TConstrTypeSet = set of TConstrType;
TSimplexType = (stPrimalPrimal, stDualPrimal, stPrimalDual, stDualDual);
TBasisCrash = (cNothing, cNonBasicBounds, cMostFeasible, cLeastDegenerate);
TSolverStatus = (stUnknownError, stDataIgnored, stNoBfp, stNoMemory, stNotRun,
stOptimal, stSubOptimal, stInfeasible, stUnbounded, stDegenerate, stNumfailure,
stUserAbort, stTimeout, stRunning, stPresolved, stProcfail, stProcbreak,
stFeasFound, stNoFeasFound
{$IFDEF LPS55_UP}
, stFathomed
{$ENDIF}
);
TMessage = (mPresolve, mIteration, mInvert, mLpFeasible, mLpOptimal,
mLpEqual, mLpBetter, mMiLpFeasible, mMiLpEqual, mMiLpBetter, mMiLpStrategy,
mMiLpOptimal, mPerformance, mInitPseudoCost);
TMessages = set of TMessage;
TScriptFormat = (sfMPS, sfLP, sfXLI);
TAntiDegen = (adFixedVars, adColumnCheck, adStalling, adNumFailure, adLostFeas,
adInfeasible, adDynamic, adDuringBB
{$IFDEF LPS55_UP}
,adRhsPerturb, adBoundFlip
{$ENDIF}
);
TAntiDegens = set of TAntiDegen;
TPresolve = (prRows, prCols, prLindep, prAggregate, prSparser, prSOS, prReduceMip,
{$IFDEF LPS55_UP}
prKnapSack, prElimeq2, prImpliedFree, prReduceGCD, prProbeFix, prProbeReduce,
prRowDominate, prColDominate, prMergeRows, prImpliedSLK, prColFixDual, prBounds,
{$ENDIF}
prDuals, prSensDuals);
TPresolves = set of TPresolve;
TMyBool = (mbFalse, mbTrue, mbAutomatic, mbDynamic);
TBBRuleSelect = (bbFirstSelect, bbGapSelect, bbRangeSelect, bbFractionSelect,
bbPseudocostSelect, bbPseudoNonIntSelect, bbPseudoRatioSelect, bbUserSelect);
TBBRuleMode = (bbWeightReverseMode, bbBranchReverseMode, bbGreedyMode,
bbPseudoCostMode, bbDepthFirstMode, bbRandomizeMode, bbGubMode,
bbDynamicMode, bbRestartMode, bbBreadthFirstMode, bbAutoOrder
{$IFDEF LPS55_UP}
,bbRCostFixing, bbStrongInit
{$ENDIF}
);
TBBRuleModes = set of TBBRuleMode;
TBranch = (bCeiling, bFloor, bAutomatic, bDefault);
TScaleType = (sNone, sExtreme, sRange, sMean, sGeometric, sFuture1, sFuture2, sCurtisreId);
TScaleMode = (sQuadratic, sLogarithmic, sPower2, sEquilibrate, sIntegers, sDynUpdate
{$IFDEF LPS55_UP}
,sRowsOnly ,sColsOnly
{$ENDIF}
);
TScaleModes = set of TScaleMode;
TImprove = (iNone, iFTran, iBTran, iInverse
{$IFDEF LPS55_UP}
,iBBSimplex
{$ENDIF}
);
TImproves = set of TImprove;
TPricerRule = (pFirstindex, pDantzig, pDevex, pSteepestedge);
TPricerMode = (pPrimalFallBack, pMultiple, pPartial, pAdaptive, pHybrid,
pRandomize, pAutoPartialCols, pAutoPartialRows, pLoopLeft, pLoopAlternate,
{$IFDEF LPS55_UP}
pHarrisTwoPass, pForceFull, pTrueNormInit
{$ELSE}
pAutoMultiCols, pAutoMultiRows
{$ENDIF}
);
TPricerModes = set of TPricerMode;
TOnAbort = procedure(sender: TComponent; var return: boolean) of object;
TOnLog = procedure(sender: TComponent; log: PChar) of object;
TOnMessage = procedure(sender: TComponent; mesg: TMessage) of object;
TLPSolver = class(TComponent)
private
FLP: TLpHandle;
FOnAbort: TOnAbort;
FOnLog: TOnLog;
FMessages: TMessages;
FOnMessage: TOnMessage;
FOnLoad: TNotifyEvent;
FFreeMPS: boolean;
FIBMMPS: boolean;
FNegateObjConstMPS: boolean;
FIgnoreInteger: boolean;
FBFP,
FXLI,
FXLIDataName,
FXLIOptions: string;
//class var
function GetHasBFP: boolean;
function GetIsNativeBFP: boolean;
function GetHasXLI: boolean;
function GetIsNativeXLI: boolean;
function GetMaximize: boolean;
function GetMinimize: boolean;
procedure SetMaximize(const Value: boolean);
procedure SetMinimize(const Value: boolean);
function GetAddRowMode: boolean;
procedure SetAddRowMode(const Value: boolean);
function GetLagTrace: boolean;
procedure SetLagTrace(const Value: boolean);
function GetConstrType(const row: integer): TConstrType;
procedure SetConstrType(const row: integer;
const Value: TConstrType);
function GetRh(const row: integer): TFloat;
function GetRhRange(const row: integer): TFloat;
procedure SetRh(const row: integer; const Value: TFloat);
procedure SetRhRange(const row: integer; const Value: TFloat);
function GetMat(const row, column: integer): TFloat;
procedure setMat(const row, column: integer; const Value: TFloat);
function GetBoundsTighter: boolean;
function GetIsFree(const column: integer): boolean;
function GetLowerBound(const column: integer): TFloat;
function GetUpperBound(const column: integer): TFloat;
procedure SetBoundsTighter(const Value: boolean);
procedure SetIsFree(const column: integer; const Value: boolean);
procedure SetLowerBound(const column: integer; const Value: TFloat);
procedure SetUpperBound(const column: integer; const Value: TFloat);
function GetIsBinary(const column: integer): boolean;
function GetIsInt(const column: integer): boolean;
function GetIsNegative(const column: integer): boolean;
function GetIsSemiCont(const column: integer): boolean;
function GetVarPriority(const column: integer): integer;
procedure SetIsBinary(const column: integer; const Value: boolean);
procedure SetIsInt(const column: integer; const Value: boolean);
procedure SetIsSemiCont(const column: integer; const Value: boolean);
function GetIsSOSVar(const column: integer): boolean;
function GetOrigRowName(const row: integer): string;
function GetRowName(const row: integer): string;
procedure SetRowName(const row: integer; const Value: string);
function GetColName(const Col: integer): string;
function GetOrigColName(const Col: integer): string;
procedure SetColName(const Col: integer; const Value: string);
function GetSimplextype: TSimplexType;
procedure SetSimplextype(const Value: TSimplexType);
function GetBasisCrash: TBasisCrash;
procedure SetBasisCrash(const Value: TBasisCrash);
function getTimeElapsed: TFloat;
procedure SetOnAbort(const Value: TOnAbort);
procedure SetOnLog(const Value: TOnLog);
procedure SetMessages(const Value: TMessages);
procedure SetOnMessage(const Value: TOnMessage);
function GetPtrPrimalSolution: PFloatArray;
function GetPtrLambda: PFloatArray; overload;
function GetPtrDualSolution: PFloatArray; overload;
function GetTimeOut: integer;
function GetVerbose: TVerbose;
procedure SetTimeOut(const Value: integer);
procedure SetVerbose(const Value: TVerbose);
function GetPrintSol: TMyBool;
procedure SetPrintSol(const Value: TMyBool);
function ChangeLPHandle(newone: TLpHandle): boolean;
function GetDebug: boolean;
procedure SetDebug(const Value: boolean);
function GetTrace: boolean;
procedure SetTrace(const Value: boolean);
function GetAntiDegen: TAntiDegens;
procedure SetAntiDegen(const Value: TAntiDegens);
function GetPresolve: TPresolves;
procedure SetPresolve(const Value: TPresolves);
function GetLpIndex(const index: integer): integer;
function GetOrigIndex(const index: integer): integer;
function GetMaxPivot: integer;
procedure SetMaxPivot(const Value: integer);
function GetObjBound: TFloat;
procedure SetObjBound(const Value: TFloat);
function GetMipGap(const absolute: boolean): TFloat;
procedure SetMipGap(const absolute: boolean; const Value: TFloat);
function GetBBRuleMode: TBBRuleModes;
function GetBBRuleSelect: TBBRuleSelect;
procedure SetBBRuleMode(const Value: TBBRuleModes);
procedure SetBBRuleSelect(const Value: TBBRuleSelect);
function GetVarBranch(const column: integer): TBranch;
procedure SetVarBranch(const column: integer; const Value: TBranch);
function GetEpsb: TFloat;
function GetEpsd: TFloat;
function GetEpsel: TFloat;
function GetInfinite: TFloat;
procedure SetEpsb(const Value: TFloat);
procedure SetEpsd(const Value: TFloat);
procedure SetEpsel(const Value: TFloat);
procedure SetInfinite(const Value: TFloat);
function GetScaleMode: TScaleModes;
function GetScaleType: TScaleType;
procedure SetScaleMode(const Value: TScaleModes);
procedure SetScaleType(const Value: TScaleType);
function GetScaleLimit: TFloat;
procedure SetScaleLimit(const Value: TFloat);
function GetIsIntegerScaling: boolean;
function GetImprove: TImproves;
procedure SetImprove(const Value: TImproves);
function GetPivotMode: TPricerModes;
function GetPivotRule: TPricerRule;
procedure SetPivotMode(const Value: TPricerModes);
procedure SetPivotRule(const Value: TPricerRule);
function getBreakAtFirst: boolean;
procedure SetBreakAtFirst(const Value: boolean);
function GetBBFloorFirst: TBranch;
procedure SetBBFloorFirst(const Value: TBranch);
function GetBBDepthLimit: integer;
procedure SetBBDepthLimit(const Value: integer);
function GetBreakAtValue: TFloat;
procedure SetBreakAtValue(const Value: TFloat);
function GetEpsPerturb: TFloat;
function GetEpsPivot: TFloat;
function GetNegRange: TFloat;
procedure SetEpsPerturb(const Value: TFloat);
procedure SetEpsPivot(const Value: TFloat);
procedure SetNegRange(const Value: TFloat);
function GetMaxLevel: integer;
function GetTotalIter: integer;
function GetTotalNodes: integer;
function GetObjective: TFloat;
function GetWorkingObjective: TFloat;
function GetVarDualResult(const index: integer): TFloat;
function GetVarPrimalResult(const index: integer): TFloat;
function GetPtrVariables: PFloatArray;
function GetPtrConstraints: PFloatArray;
function GetSolutionCount: integer;
function GetSolutionLimit: integer;
procedure SetSolutionLimit(const Value: integer);
function GetLRows: integer;
function GetNOrigRows: integer;
function GetNRows: integer;
function GetNColumns: integer;
function GetNOrigColumns: integer;
procedure SetLpName(const NewName: string);
function GetLpName: string; virtual;
procedure SetBFP(const filename: string);
procedure SetXLIName(const Value: string);
function GetNonZeros: integer;
function GetStatus: TSolverStatus;
function GetEpsInt: TFloat;
procedure SetEpsInt(const Value: TFloat);
class function GetTempFile: string; static; inline;
protected
procedure DoOnload; virtual;
public
procedure Reset;
Procedure ResetParams;
property Handle: TLpHandle read FLP;
property AddRowMode: boolean read GetAddRowMode write SetAddRowMode;
property Minimize: boolean read GetMinimize write SetMinimize;
// BFP suport
property HasBFP: boolean read GetHasBFP;
property IsNativeBFP: boolean read GetIsNativeBFP;
// XLI support
function WriteXLI(const filename, options: string; results: boolean): boolean;
function SetXLI(const filename: string): boolean;
property HasXLI: boolean read GetHasXLI;
property IsNativeXLI: boolean read GetIsNativeXLI;
// objective function
function SetObj(Column: integer; Value: TFloat): boolean;
function SetObjFn(row: PFloatArray): boolean; overload;
function SetObjFn(const RowString: string): boolean; overload;
function SetObjFnEx(count: integer; row: PFloatArray; colno: PIntArray): boolean;
// Constraints
function AddConstraint(row: PFloatArray; ConstrType: TConstrType; rh: TFloat): boolean; overload;
function AddConstraint(const RowString: string; ConstrType: TConstrType; rh: TFloat): boolean; overload;
function AddConstraintex(count: integer; row: PFloatArray; colno: PIntArray;
ConstrType: TConstrType; rh: TFloat): boolean;
function GetRow(RowNr: integer; row: PFloatArray): boolean;
function DelConstraint(DelRow: integer): boolean;
// Lagrangian constraints
function AddLagCon(row: PFloatArray; ConType: TConstrType; rhs: TFloat): boolean; overload;
function AddLagCon(const RowString: string; ConType: TConstrType; rhs: TFloat): boolean; overload;
// ConstrType
property ConstrType[const row: integer]: TConstrType read GetConstrType write SetConstrType;
property Rh[const row: integer]: TFloat read GetRh write SetRh;
property RhRange[const row: integer]: TFloat read GetRhRange write SetRhRange;
procedure SetRhVec(rh: PFloatArray); overload;
function SetRhVec(const rh: string): boolean; overload;
function AddColumn(column: PFloatArray): boolean; overload;
function AddColumn(const ColString: string): boolean; overload;
function AddColumnEx(count: integer; column: PFloatArray; rowno: PIntArray): boolean;
function ColumnInLp(column: PFloatArray): integer;
function GetColumn(colnr: integer; column: PFloatArray): boolean;
function DelColumn(column: integer): boolean;
property Mat[const row, column: integer]: TFloat read GetMat write setMat; default;
// Set the upper and lower bounds of a variable
function SetBounds(column: integer; lower, upper: TFloat): boolean;
property UpperBound[const column: integer]: TFloat read GetUpperBound write SetUpperBound;
property LowerBound[const column: integer]: TFloat read GetLowerBound write SetLowerBound;
property IsFree[const column: integer]: boolean read GetIsFree write SetIsFree;
property IsInt[const column: integer]: boolean read GetIsInt write SetIsInt;
property IsBinary[const column: integer]: boolean read GetIsBinary write SetIsBinary;
property IsSemiCont[const column: integer]: boolean read GetIsSemiCont write SetIsSemiCont;
property IsNegative[const column: integer]: boolean read GetIsNegative;
function SetVarWeights(weights: PFloatArray): boolean;
property VarPriority[const column: integer]: integer read GetVarPriority;
// Add SOS constraints
function AddSOS(const name: string; sostype, priority, count: integer; sosvars: PIntArray;
weights: PFloatArray): integer;
property IsSOSVar[const column: integer]: boolean read GetIsSOSVar;
property RowName[const row: integer]: string read GetRowName write SetRowName;
property OrigRowName[const row: integer]: string read GetOrigRowName;
property ColName[const Col: integer]: string read GetColName write SetColName;
property OrigColName[const Col: integer]: string read GetOrigColName;
procedure Unscale;
procedure SetPreferDual(dodual: boolean);
procedure DefaultBasis;
procedure SetBasis(bascolumn: PIntArray; nonbasic: boolean);
procedure GetBasis(bascolumn: PIntArray; nonbasic: boolean);
function IsFeasible(Values: PFloatArray; threshold: TFloat): boolean;
function Solve: TSolverStatus;
property TimeElapsed: TFloat read getTimeElapsed;
function GetPrimalSolution(pv: PFloatArray): boolean;
property PrimalSolution: PFloatArray read GetPtrPrimalSolution;
function GetDualSolution(rc: PFloatArray): boolean; overload;
property DualSolution: PFloatArray read GetPtrDualSolution;
function GetLambda(lambda: PFloatArray): boolean; overload;
property Lambda: PFloatArray read GetPtrLambda;
procedure ResetBasis;
function LoadFromFile(const aFileName: string; verbose: TVerbose; mode: TScriptFormat): boolean;
function LoadFromStrings(strings: TStrings; verbose: TVerbose; mode: TScriptFormat): boolean;
function SaveToFile(const filename: string; mode: TScriptFormat): boolean;
function SaveToStrings(strings: TStrings; mode: TScriptFormat): boolean;
procedure Print;
procedure PrintTableau;
procedure PrintObjective;
procedure PrintSolution(columns: integer);
procedure PrintConstraints(columns: integer);
procedure PrintDuals;
procedure PrintScales;
procedure PrintStr(const str: string);
procedure SetOutputStream(stream: Pointer);
function SetOutputFile(const filename: string): boolean;
function PrintDebugDump(const filename: string): boolean;
property OrigIndex[const index: integer]: integer read GetOrigIndex;
property LpIndex[const index: integer]: integer read GetLpIndex;
property MipGap[const absolute: boolean]: TFloat read GetMipGap write SetMipGap;
property VarBranch[const column: integer]: TBranch read GetVarBranch write SetVarBranch;
property IsIntegerScaling: boolean read GetIsIntegerScaling;
property MaxLevel: integer read GetMaxLevel;
property TotalNodes: integer read GetTotalNodes;
property TotalIter: integer read GetTotalIter;
property Objective: TFloat read GetObjective;
property WorkingObjective: TFloat read GetWorkingObjective;
property VarPrimalResult[const index: integer]: TFloat read GetVarPrimalResult;
property VarDualResult[const index: integer]: TFloat read GetVarDualResult;
function GetVariables(vars: PFloatArray): boolean;
property Variables: PFloatArray read GetPtrVariables;
function GetConstraints(constr: PFloatArray): boolean;
property Constraints: PFloatArray read GetPtrConstraints;
function GetSensitivityRhs(duals, dualsfrom, dualstill: PFloatArray): boolean;
function GetPtrSensitivityRhs(var duals, dualsfrom, dualstill: PFloatArray): boolean;
function GetSensitivityObj(objfrom, objtill: PFloatArray): boolean;
function GetSensitivityObjEx(objfrom, objtill, objfromvalue, objtillvalue: PFloatArray): boolean;
function GetPtrSensitivityObj(var objfromn, objtill: PFloatArray): boolean;
property SolutionCount: integer read GetSolutionCount;
property NOrigRows: integer read GetNOrigRows;
property NRows: integer read GetNRows;
property LRows: integer read GetLRows;
property NOrigColumns: integer read GetNOrigColumns;
property NColumns: integer read GetNColumns;
function GetStatustext(status: TSolverStatus): string;
// not published
property Maximize: boolean read GetMaximize write SetMaximize;
property LpName: string read GetLpName write SetLpName;
// version 5.1
property NonZeros: integer read GetNonZeros;
function IsInfinite(const value: TFloat): boolean;
property Status: TSolverStatus read GetStatus;
function SetColumn(colno: Integer; column: PFloatArray): boolean;
function SetColumnEx(colno, count: Integer; column: PFloatArray; rowno: PIntArray): boolean;
function SetRow(rowno: Integer; row: PFloatArray): boolean;
function SetRowex(rowno, count: Integer; row: PFloatArray; colno: PIntArray): boolean;
function WriteParams(filename, options: string): boolean;
function ReadParams(filename, options: string): boolean;
procedure LoadProfile(Stream: TStream);
procedure SaveProfile(Stream: TStream);
function SaveBasis(const FileName: string): boolean;
function LoadBasis(const FileName: string): boolean; overload;
function LoadBasis(const FileName: string; var info: string): boolean; overload;
constructor Create(AOwner: TComponent); overload; override;
destructor Destroy; override;
property XLI: string read FXLI write SetXLIName;
class property TempFile: string read GetTempFile;
published
// sense
property LagTrace: boolean read GetLagTrace write SetLagTrace;
property BoundsTighter: boolean read GetBoundsTighter write SetBoundsTighter;
property SimplexType: TSimplexType read GetSimplextype write SetSimplextype;
property BasisCrash: TBasisCrash read GetBasisCrash write SetBasisCrash;
property OnAbort: TOnAbort read FOnAbort write SetOnAbort;
property OnLog: TOnLog read FOnLog write SetOnLog;
property Messages: TMessages read FMessages write SetMessages;
property OnMessage: TOnMessage read FOnMessage write SetOnMessage;
property Verbose: TVerbose read GetVerbose write SetVerbose;
property TimeOut: integer read GetTimeOut write SetTimeOut;
property PrintSol: TMyBool read GetPrintSol write SetPrintSol;
property Debug: boolean read GetDebug write SetDebug;
property Trace: boolean read GetTrace write SetTrace;
property AntiDegen: TAntiDegens read GetAntiDegen write SetAntiDegen;
property Presolve: TPresolves read GetPresolve write SetPresolve;
property MaxPivot: integer read GetMaxPivot write SetMaxPivot;
property BBRuleSelect: TBBRuleSelect read GetBBRuleSelect write SetBBRuleSelect;
property BBRuleMode: TBBRuleModes read GetBBRuleMode write SetBBRuleMode;
property ScaleType: TScaleType read GetScaleType write SetScaleType;
property ScaleMode: TScaleModes read GetScaleMode write SetScaleMode;
property Improve: TImproves read GetImprove write SetImprove;
property PivotRule: TPricerRule read GetPivotRule write SetPivotRule;
property PivotMode: TPricerModes read GetPivotMode write SetPivotMode;
property BreakAtFirst: boolean read getBreakAtFirst write SetBreakAtFirst;
property BBFloorFirst: TBranch read GetBBFloorFirst write SetBBFloorFirst;
property BBDepthLimit: integer read GetBBDepthLimit write SetBBDepthLimit;
property SolutionLimit: integer read GetSolutionLimit write SetSolutionLimit;
property ObjBound: TFloat read GetObjBound write SetObjBound;
property Infinite: TFloat read GetInfinite write SetInfinite;
property Epsb: TFloat read GetEpsb write SetEpsb;
property Epsd: TFloat read GetEpsd write SetEpsd;
property Epsel: TFloat read GetEpsel write SetEpsel;
property EpsPerturb: TFloat read GetEpsPerturb write SetEpsPerturb;
property EpsPivot: TFloat read GetEpsPivot write SetEpsPivot;
property EpsInt: TFloat read GetEpsInt write SetEpsInt;
property ScaleLimit: TFloat read GetScaleLimit write SetScaleLimit;
property BreakAtValue: TFloat read GetBreakAtValue write SetBreakAtValue;
property NegRange: TFloat read GetNegRange write SetNegRange;
property FreeMPS: boolean read FFreeMPS write FFreeMPS;
property IBMMPS: boolean read FIBMMPS write FIBMMPS;
property NegateObjConstMPS: boolean read FNegateObjConstMPS write FNegateObjConstMPS;
property IgnoreInteger: boolean read FIgnoreInteger write FIgnoreInteger;
property BFP: string read FBFP write SetBFP;
property XLIDataName: string read FXLIDataName write FXLIDataName;
property XLIOptions: string read FXLIOptions write FXLIOptions;
property OnLoad: TNotifyEvent read FOnLoad write FOnLoad;
end;
procedure Register;
{$IFDEF MSWINDOWS}
const MSVCRT = 'msvcrt.dll';
//function std_fclose(p: Pointer): integer; cdecl; external MSVCRT name 'fclose';
//function std_fdopen(handle: integer; r: PChar): Pointer; cdecl; external MSVCRT name '_fdopen';
//function std_fputc(c: integer; p: Pointer): integer; cdecl; external MSVCRT name 'fputc';
//function std_fputs(str: PChar; p: Pointer ): integer; cdecl; external MSVCRT name 'fputs';
//function std_pipe(phandles: PInteger; psize: Cardinal; textmode: integer): integer; cdecl; external MSVCRT name '_pipe';
//function std_fgetc(stream: Pointer): integer; cdecl; external MSVCRT name 'fgetc';
//function std_close(h: integer): integer; cdecl; external MSVCRT name '_close';
function std_system(p: PChar): integer; cdecl; cdecl; external MSVCRT name 'system';
{$ENDIF}
implementation
procedure Register;
begin
RegisterComponents('LP Solver', [TLPSolver]);
end;
const
ConstrTypeMap : array[TConstrType] of integer = (LE, GE, EQ);
SimplexTypeMap: array[TSimplexType] of integer = (SIMPLEX_PRIMAL_PRIMAL,
SIMPLEX_DUAL_PRIMAL, SIMPLEX_PRIMAL_DUAL, SIMPLEX_DUAL_DUAL);
MyBoolMap: array[TMyBool] of integer = (_FALSE, _TRUE, _AUTOMATIC, _DYNAMIC);
function DecodeMyBool(code: integer): TMyBool;
begin
case code of
_FALSE : result := mbFalse;
_TRUE : result := mbTrue;
_AUTOMATIC : result := mbAutomatic;
_DYNAMIC : result := mbDynamic;
else
raise Exception.CreateFmt('unexpected TMyBool value: %d', [code]);
end;
end;
function DecodeConstrType(code: integer): TConstrType;
begin
case code of
LE: result := ctLE;
GE: result := ctGE;
EQ: result := ctEQ;
else
raise Exception.CreateFmt('unexpected constaint sense: %d', [code]);
end;
end;
function DecodeSimplexType(code: integer): TSimplexType;
begin
case code of
SIMPLEX_PRIMAL_PRIMAL : result := stPrimalPrimal;
SIMPLEX_DUAL_PRIMAL : result := stDualPrimal;
SIMPLEX_PRIMAL_DUAL : result := stPrimalDual;
SIMPLEX_DUAL_DUAL : result := stDualDual;
else
raise Exception.CreateFmt('Unexpected simplex mode: %d', [code]);
end;
end;
function DecodeMessage(code: integer): TMessage;
begin
case code of
MSG_PRESOLVE : result := mPresolve;
MSG_ITERATION : result := mIteration;
MSG_INVERT : result := mInvert;
MSG_LPFEASIBLE : result := mLpFeasible;
MSG_LPOPTIMAL : result := mLpOptimal;
MSG_LPEQUAL : result := mLpEqual;
MSG_LPBETTER : result := mLpBetter;
MSG_MILPFEASIBLE : result := mMiLpFeasible;
MSG_MILPEQUAL : result := mMiLpEqual;
MSG_MILPBETTER : result := mMilpBetter;
MSG_MILPSTRATEGY : result := mMiLpStrategy;
MSG_MILPOPTIMAL : result := mMiLpOptimal;
MSG_PERFORMANCE : result := mPerFormance;
MSG_INITPSEUDOCOST : result := mInitPseudoCost;
else
raise Exception.CreateFmt('Unexpected message: %d', [code]);
end;
end;
function AbortHandler(lp: THandle; userhandle: Pointer): integer; stdcall;
var abrt: boolean;
begin
abrt := false;
if assigned(TLPSolver(userhandle).FOnAbort) then
TLPSolver(userhandle).FOnAbort(userhandle, abrt);
result := ord(abrt);
end;
procedure LogHandler(lp: THandle; userhandle: Pointer; buf: PChar); stdcall;
begin
if assigned(TLPSolver(userhandle).FOnLog) then
TLPSolver(userhandle).FOnLog(userhandle, buf);
end;
procedure MessageHandler(lp: THandle; userhandle: Pointer; message: integer); stdcall;
begin
if assigned(TLPSolver(userhandle).FOnMessage) then
TLPSolver(userhandle).FOnMessage(userhandle, DecodeMessage(message));
end;
{ TLPSolver }
constructor TLPSolver.Create(AOwner: TComponent);
begin
FFreeMPS := false;
FIBMMPS := false;
FIgnoreInteger := false;
FNegateObjConstMPS := false;
FLP := make_lp(0, 0);
assert(FLP <> 0);
FBFP := '';
inherited Create(AOwner);
end;
destructor TLPSolver.Destroy;
begin
set_BFP(FLP, nil);
delete_lp(FLP);
inherited;
end;
function TLPSolver.GetHasBFP: boolean;
begin
Result := has_BFP(FLP);
end;
function TLPSolver.GetHasXLI: boolean;
begin
result := has_XLI(FLP);
end;
function TLPSolver.GetIsNativeBFP: boolean;
begin
result := is_nativeBFP(FLP);
end;
function TLPSolver.GetIsNativeXLI: boolean;
begin
result := is_nativeXLI(FLP);
end;
function TLPSolver.GetLpName: string;
begin
result := get_lp_name(FLP);
end;
function TLPSolver.WriteXLI(const filename, options: string;
results: boolean): boolean;
begin
result := write_XLI(FLP, Pointer(filename), Pointer(options), results);
end;
procedure TLPSolver.SetBFP(const filename: string);
begin
if (filename <> FBFP) then
FBFP := filename;
end;
procedure TLPSolver.SetLpName(const NewName: string);
begin
set_lp_name(FLP, PChar(NewName));
end;
function TLPSolver.SetXLI(const filename: string): boolean;
begin
result := set_XLI(FLP, PChar(filename));
end;
function TLPSolver.SetObj(Column: integer; Value: TFloat): boolean;
begin
result := set_obj(FLP, Column, Value);
end;
function TLPSolver.SetObjFn(row: PFloatArray): boolean;
begin
result := set_obj_fn(FLP, row);
end;
function TLPSolver.SetObjFnEx(count: integer; row: PFloatArray;
colno: PIntArray): boolean;
begin
result := set_obj_fnex(FLP, count, row, colno);
end;
function TLPSolver.SetObjFn(const RowString: string): boolean;
begin
result := str_set_obj_fn(FLP, PChar(RowString));
end;
function TLPSolver.GetMaximize: boolean;
begin
result := is_maxim(FLP) = true;
end;
function TLPSolver.GetMinimize: boolean;
begin
result := is_maxim(FLP) = false;
end;
class function TLPSolver.GetTempFile: string; static;
begin
//Result := ConfigFolder + '~lpsol55_file';
Result := GetTempFileNameUTF8('', '~lpsol55_file');
end;
procedure TLPSolver.SetMaximize(const Value: boolean);
begin
if is_maxim(FLP) <> Value then
case Value of
true : set_maxim(FLP);
false : set_minim(FLP);
end;
end;
procedure TLPSolver.SetMinimize(const Value: boolean);
begin
if is_maxim(FLP) = Value then
case Value of
true : set_minim(FLP);
false : set_maxim(FLP);
end;
end;
function TLPSolver.GetAddRowMode: boolean;
begin
result := is_add_rowmode(FLP);
end;
procedure TLPSolver.SetAddRowMode(const Value: boolean);
begin
if is_add_rowmode(FLP) <> Value then
set_add_rowmode(FLP, Value);
end;
function TLPSolver.AddConstraint(row: PFloatArray; ConstrType: TConstrType;
rh: TFloat): boolean;
begin
result := add_constraint(FLP, row, ConstrTypeMap[ConstrType], rh)
end;
function TLPSolver.AddConstraintex(count: integer; row: PFloatArray;
colno: PIntArray; ConstrType: TConstrType; rh: TFloat): boolean;
begin
result := add_constraintex(FLP, count, row, colno, ConstrTypeMap[ConstrType], rh);
end;
function TLPSolver.AddConstraint(const RowString: string;
ConstrType: TConstrType; rh: TFloat): boolean;
begin
result := str_add_constraint(FLP, PChar(RowString), ConstrTypeMap[ConstrType], rh);
end;
function TLPSolver.GetRow(RowNr: integer; row: PFloatArray): boolean;
begin
result := get_row(FLP, RowNr, row);
end;
function TLPSolver.DelConstraint(DelRow: integer): boolean;
begin
result := del_constraint(FLP, DelRow);
end;
function TLPSolver.AddLagCon(row: PFloatArray; ConType: TConstrType;
rhs: TFloat): boolean;
begin
result := add_lag_con(FLP, row, ConstrTypeMap[ConType], rhs);
end;
function TLPSolver.AddLagCon(const RowString: string;
ConType: TConstrType; rhs: TFloat): boolean;
begin
result := str_add_lag_con(FLP, PChar(RowString), ConstrTypeMap[ConType], rhs);
end;
function TLPSolver.GetLagTrace: boolean;
begin
result := is_lag_trace(FLP);
end;
procedure TLPSolver.SetLagTrace(const Value: boolean);
begin
if is_lag_trace(FLP) <> Value then
set_lag_trace(FLP, Value);
end;
function TLPSolver.GetConstrType(const row: integer): TConstrType;
begin
result := DecodeConstrType(get_constr_type(FLP, row));
end;
procedure TLPSolver.SetConstrType(const row: integer;
const Value: TConstrType);
begin
set_constr_type(FLP, row, ConstrTypeMap[Value]);
end;
function TLPSolver.GetRh(const row: integer): TFloat;
begin
result := get_rh(FLP, row);
end;
function TLPSolver.GetRhRange(const row: integer): TFloat;
begin
result := get_rh_range(FLP, row);
end;
procedure TLPSolver.SetRh(const row: integer; const Value: TFloat);
begin
set_rh(FLP, row, Value);
end;
procedure TLPSolver.SetRhRange(const row: integer; const Value: TFloat);
begin
set_rh_range(FLP, row, Value);
end;
procedure TLPSolver.SetRhVec(rh: PFloatArray);
begin
set_rh_vec(FLP, rh);
end;
function TLPSolver.SetRhVec(const rh: string): boolean;
begin
result := str_set_rh_vec(FLP, PChar(rh));
end;
function TLPSolver.AddColumn(const ColString: string): boolean;
begin
result := str_add_column(FLP, PChar(ColString));
end;
function TLPSolver.AddColumn(column: PFloatArray): boolean;
begin
result := add_column(FLP, column);
end;
function TLPSolver.AddColumnEx(count: integer; column: PFloatArray;
rowno: PIntArray): boolean;
begin
result := add_columnex(FLP, count, column, rowno);
end;
function TLPSolver.ColumnInLp(column: PFloatArray): integer;
begin
result := column_in_lp(FLP, column);
end;
function TLPSolver.DelColumn(column: integer): boolean;
begin
result := del_column(FLP, column);
end;
function TLPSolver.GetColumn(colnr: integer; column: PFloatArray): boolean;
begin
result := get_column(FLP, colnr, column);
end;
function TLPSolver.GetMat(const row, column: integer): TFloat;
begin
result := get_mat(FLP, row, column);
end;
procedure TLPSolver.setMat(const row, column: integer;
const Value: TFloat);
begin
set_mat(FLP, row, column, Value);
end;
function TLPSolver.GetBoundsTighter: boolean;
begin
result := get_bounds_tighter(FLP);
end;
function TLPSolver.GetIsFree(const column: integer): boolean;
begin
{$IFDEF LPS55_UP}
result := is_unbounded(FLP, column);
{$ELSE}
result := is_free(FLP, column);
{$ENDIF}
end;
function TLPSolver.GetLowerBound(const column: integer): TFloat;
begin
result := get_lowbo(FLP, column);
end;
function TLPSolver.GetUpperBound(const column: integer): TFloat;
begin
result := get_upbo(FLP, column);
end;
function TLPSolver.SetBounds(column: integer; lower,
upper: TFloat): boolean;
begin
result := lpsolve.set_bounds(FLP, column, lower, upper);
end;
procedure TLPSolver.SetBoundsTighter(const Value: boolean);
begin
if get_bounds_tighter(FLP) <> Value then
set_bounds_tighter(FLP, Value);
end;
procedure TLPSolver.SetIsFree(const column: integer; const Value: boolean);
begin
{$IFDEF LPS55_UP}
set_unbounded(FLP, column);
{$ELSE}
set_free(FLP, column);
{$ENDIF}
end;
procedure TLPSolver.SetLowerBound(const column: integer;
const Value: TFloat);
begin
set_lowbo(FLP, column, Value);
end;
procedure TLPSolver.SetUpperBound(const column: integer;
const Value: TFloat);
begin
set_upbo(FLP, column, Value);
end;
function TLPSolver.GetIsBinary(const column: integer): boolean;
begin
result := is_binary(FLP, column);
end;
function TLPSolver.GetIsInt(const column: integer): boolean;
begin
result := is_int(FLP, column);
end;
function TLPSolver.GetIsNegative(const column: integer): boolean;
begin
result := is_negative(FLP, column);
end;
function TLPSolver.GetIsSemiCont(const column: integer): boolean;
begin
result := is_semicont(FLP, column);
end;
function TLPSolver.GetVarPriority(const column: integer): integer;
begin
result := get_var_priority(FLP, column);
end;
procedure TLPSolver.SetIsBinary(const column: integer;
const Value: boolean);
begin
set_binary(FLP, column, Value);
end;
procedure TLPSolver.SetIsInt(const column: integer; const Value: boolean);
begin
set_int(FLP, column, Value);
end;
procedure TLPSolver.SetIsSemiCont(const column: integer;
const Value: boolean);
begin
set_semicont(FLP, column, Value);
end;
function TLPSolver.SetVarWeights(weights: PFloatArray): boolean;
begin
result := set_var_weights(FLP, weights);
end;
function TLPSolver.AddSOS(const name: string; sostype, priority, count: integer;
sosvars: PIntArray; weights: PFloatArray): integer;
begin
result := add_SOS(FLP, PChar(name), sostype, priority, count, sosvars, weights);
end;