sol.c File Reference

Detailed Description

methods for storing primal CIP solutions

Author

Tobias Achterberg

Definition in file sol.c.

#include "scip/clock.h"
#include "scip/cons.h"
#include "scip/lp.h"
#include "scip/misc.h"
#include "scip/nlp.h"
#include "scip/primal.h"
#include "scip/prob.h"
#include "scip/pub_lp.h"
#include "scip/pub_message.h"
#include "scip/pub_sol.h"
#include "scip/pub_var.h"
#include "scip/relax.h"
#include "scip/set.h"
#include "scip/sol.h"
#include "scip/stat.h"
#include "scip/struct_lp.h"
#include "scip/struct_prob.h"
#include "scip/struct_set.h"
#include "scip/struct_sol.h"
#include "scip/struct_stat.h"
#include "scip/struct_var.h"
#include "scip/tree.h"
#include "scip/var.h"

Go to the source code of this file.

Functions
static SCIP_RETCODE	solClearArrays (SCIP_SOL *sol)
static SCIP_RETCODE	solSetArrayVal (SCIP_SOL *sol, SCIP_SET *set, SCIP_VAR *var, SCIP_Real val)
static SCIP_RETCODE	solIncArrayVal (SCIP_SOL *sol, SCIP_SET *set, SCIP_VAR *var, SCIP_Real incval)
static SCIP_Real	solGetArrayVal (SCIP_SOL *sol, SCIP_VAR *var)
static SCIP_RETCODE	solUnlinkVar (SCIP_SOL *sol, SCIP_SET *set, SCIP_VAR *var)
static void	solStamp (SCIP_SOL *sol, SCIP_STAT *stat, SCIP_TREE *tree, SCIP_Bool checktime)
SCIP_RETCODE	SCIPsolCreate (SCIP_SOL **sol, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_HEUR *heur)
SCIP_RETCODE	SCIPsolCreateOriginal (SCIP_SOL **sol, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *origprob, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_HEUR *heur)
SCIP_RETCODE	SCIPsolCopy (SCIP_SOL **sol, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PRIMAL *primal, SCIP_SOL *sourcesol)
SCIP_RETCODE	SCIPsolTransform (SCIP_SOL *sol, SCIP_SOL **transsol, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_PRIMAL *primal)
SCIP_RETCODE	SCIPsolAdjustImplicitSolVals (SCIP_SOL *sol, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_TREE *tree, SCIP_Bool uselprows)
SCIP_RETCODE	SCIPsolCreateLPSol (SCIP_SOL **sol, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_LP *lp, SCIP_HEUR *heur)
SCIP_RETCODE	SCIPsolCreateNLPSol (SCIP_SOL **sol, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_NLP *nlp, SCIP_HEUR *heur)
SCIP_RETCODE	SCIPsolCreateRelaxSol (SCIP_SOL **sol, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_RELAXATION *relaxation, SCIP_HEUR *heur)
SCIP_RETCODE	SCIPsolCreatePseudoSol (SCIP_SOL **sol, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_LP *lp, SCIP_HEUR *heur)
SCIP_RETCODE	SCIPsolCreateCurrentSol (SCIP_SOL **sol, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_LP *lp, SCIP_HEUR *heur)
SCIP_RETCODE	SCIPsolCreatePartial (SCIP_SOL **sol, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PRIMAL *primal, SCIP_HEUR *heur)
SCIP_RETCODE	SCIPsolCreateUnknown (SCIP_SOL **sol, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_HEUR *heur)
SCIP_RETCODE	SCIPsolFree (SCIP_SOL **sol, BMS_BLKMEM *blkmem, SCIP_PRIMAL *primal)
SCIP_RETCODE	SCIPsolLinkLPSol (SCIP_SOL *sol, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_TREE *tree, SCIP_LP *lp)
SCIP_RETCODE	SCIPsolLinkNLPSol (SCIP_SOL *sol, SCIP_STAT *stat, SCIP_TREE *tree, SCIP_NLP *nlp)
SCIP_RETCODE	SCIPsolLinkRelaxSol (SCIP_SOL *sol, SCIP_SET *set, SCIP_STAT *stat, SCIP_TREE *tree, SCIP_RELAXATION *relaxation)
SCIP_RETCODE	SCIPsolLinkPseudoSol (SCIP_SOL *sol, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_TREE *tree, SCIP_LP *lp)
SCIP_RETCODE	SCIPsolLinkCurrentSol (SCIP_SOL *sol, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_TREE *tree, SCIP_LP *lp)
SCIP_RETCODE	SCIPsolClear (SCIP_SOL *sol, SCIP_STAT *stat, SCIP_TREE *tree)
SCIP_RETCODE	SCIPsolSetUnknown (SCIP_SOL *sol, SCIP_STAT *stat, SCIP_TREE *tree)
SCIP_RETCODE	SCIPsolUnlink (SCIP_SOL *sol, SCIP_SET *set, SCIP_PROB *prob)
SCIP_RETCODE	SCIPsolSetVal (SCIP_SOL *sol, SCIP_SET *set, SCIP_STAT *stat, SCIP_TREE *tree, SCIP_VAR *var, SCIP_Real val)
SCIP_RETCODE	SCIPsolIncVal (SCIP_SOL *sol, SCIP_SET *set, SCIP_STAT *stat, SCIP_TREE *tree, SCIP_VAR *var, SCIP_Real incval)
SCIP_Real	SCIPsolGetVal (SCIP_SOL *sol, SCIP_SET *set, SCIP_STAT *stat, SCIP_VAR *var)
SCIP_Real	SCIPsolGetRayVal (SCIP_SOL *sol, SCIP_SET *set, SCIP_STAT *stat, SCIP_VAR *var)
SCIP_Real	SCIPsolGetObj (SCIP_SOL *sol, SCIP_SET *set, SCIP_PROB *transprob, SCIP_PROB *origprob)
void	SCIPsolUpdateVarObj (SCIP_SOL *sol, SCIP_VAR *var, SCIP_Real oldobj, SCIP_Real newobj)
SCIP_RETCODE	SCIPsolMarkPartial (SCIP_SOL *sol, SCIP_SET *set, SCIP_STAT *stat, SCIP_VAR **vars, int nvars)
SCIP_RETCODE	SCIPsolCheck (SCIP_SOL *sol, SCIP_SET *set, SCIP_MESSAGEHDLR *messagehdlr, BMS_BLKMEM *blkmem, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_Bool printreason, SCIP_Bool completely, SCIP_Bool checkbounds, SCIP_Bool checkintegrality, SCIP_Bool checklprows, SCIP_Bool *feasible)
SCIP_RETCODE	SCIPsolRound (SCIP_SOL *sol, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_TREE *tree, SCIP_Bool *success)
void	SCIPsolUpdateVarsum (SCIP_SOL *sol, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_Real weight)
SCIP_RETCODE	SCIPsolRetransform (SCIP_SOL *sol, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *origprob, SCIP_PROB *transprob, SCIP_Bool *hasinfval)
void	SCIPsolRecomputeObj (SCIP_SOL *sol, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *origprob)
SCIP_Bool	SCIPsolsAreEqual (SCIP_SOL *sol1, SCIP_SOL *sol2, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *origprob, SCIP_PROB *transprob)
SCIP_RETCODE	SCIPsolPrint (SCIP_SOL *sol, SCIP_SET *set, SCIP_MESSAGEHDLR *messagehdlr, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_PROB *transprob, FILE *file, SCIP_Bool mipstart, SCIP_Bool printzeros)
SCIP_RETCODE	SCIPsolPrintRay (SCIP_SOL *sol, SCIP_SET *set, SCIP_MESSAGEHDLR *messagehdlr, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_PROB *transprob, FILE *file, SCIP_Bool printzeros)
void	SCIPsolResetViolations (SCIP_SOL *sol)
void	SCIPsolUpdateIntegralityViolation (SCIP_SOL *sol, SCIP_Real absviolintegrality)
void	SCIPsolUpdateBoundViolation (SCIP_SOL *sol, SCIP_Real absviolbounds, SCIP_Real relviolbounds)
void	SCIPsolUpdateLPRowViolation (SCIP_SOL *sol, SCIP_Real absviollprows, SCIP_Real relviollprows)
void	SCIPsolUpdateConsViolation (SCIP_SOL *sol, SCIP_Real absviolcons, SCIP_Real relviolcons)
void	SCIPsolUpdateLPConsViolation (SCIP_SOL *sol, SCIP_Real absviol, SCIP_Real relviol)
SCIP_Real	SCIPsolGetAbsBoundViolation (SCIP_SOL *sol)
SCIP_Real	SCIPsolGetRelBoundViolation (SCIP_SOL *sol)
SCIP_Real	SCIPsolGetAbsIntegralityViolation (SCIP_SOL *sol)
SCIP_Real	SCIPsolGetAbsLPRowViolation (SCIP_SOL *sol)
SCIP_Real	SCIPsolGetRelLPRowViolation (SCIP_SOL *sol)
SCIP_Real	SCIPsolGetAbsConsViolation (SCIP_SOL *sol)
SCIP_Real	SCIPsolGetRelConsViolation (SCIP_SOL *sol)
SCIP_SOLORIGIN	SCIPsolGetOrigin (SCIP_SOL *sol)
SCIP_Bool	SCIPsolIsOriginal (SCIP_SOL *sol)
SCIP_Bool	SCIPsolIsPartial (SCIP_SOL *sol)
SCIP_Real	SCIPsolGetOrigObj (SCIP_SOL *sol)
void	SCIPsolOrigAddObjval (SCIP_SOL *sol, SCIP_Real addval)
SCIP_Real	SCIPsolGetTime (SCIP_SOL *sol)
int	SCIPsolGetRunnum (SCIP_SOL *sol)
SCIP_Longint	SCIPsolGetNodenum (SCIP_SOL *sol)
int	SCIPsolGetDepth (SCIP_SOL *sol)
SCIP_HEUR *	SCIPsolGetHeur (SCIP_SOL *sol)
int	SCIPsolGetPrimalIndex (SCIP_SOL *sol)
void	SCIPsolSetPrimalIndex (SCIP_SOL *sol, int primalindex)
int	SCIPsolGetIndex (SCIP_SOL *sol)
void	SCIPsolSetHeur (SCIP_SOL *sol, SCIP_HEUR *heur)
SCIP_SOLTYPE	SCIPsolGetType (SCIP_SOL *sol)
SCIP_RELAX *	SCIPsolGetRelax (SCIP_SOL *sol)
void	SCIPsolSetRelax (SCIP_SOL *sol, SCIP_RELAX *relax)
void	SCIPsolSetLPRelaxation (SCIP_SOL *sol)
void	SCIPsolSetStrongbranching (SCIP_SOL *sol)
void	SCIPsolSetPseudo (SCIP_SOL *sol)

Function Documentation

solClearArrays()

static SCIP_RETCODE solClearArrays ( SCIP_SOL *  sol )

static

clears solution arrays of primal CIP solution

Parameters

sol	primal CIP solution

Definition at line 61 of file sol.c.

References FALSE, SCIP_Sol::hasinfval, NULL, SCIP_CALL, SCIP_OKAY, SCIPboolarrayClear(), and SCIP_Sol::valid.

Referenced by SCIPsolClear(), SCIPsolLinkLPSol(), SCIPsolLinkNLPSol(), SCIPsolLinkPseudoSol(), SCIPsolLinkRelaxSol(), SCIPsolRetransform(), and SCIPsolSetUnknown().

solSetArrayVal()

static SCIP_RETCODE solSetArrayVal ( SCIP_SOL *  sol, SCIP_SET *  set, SCIP_VAR *  var, SCIP_Real  val  )

static

sets value of variable in the solution's array

Parameters

sol	primal CIP solution
set	global SCIP settings
var	problem variable
val	value to set variable to

Definition at line 75 of file sol.c.

References SCIP_Sol::hasinfval, NULL, SCIP_CALL, SCIP_OKAY, SCIP_UNKNOWN, SCIPboolarraySetVal(), SCIPrealarraySetVal(), SCIPsetIsInfinity(), SCIPvarGetIndex(), SCIPvarMarkNotDeletable(), TRUE, SCIP_Sol::valid, and SCIP_Sol::vals.

Referenced by SCIPsolRetransform(), SCIPsolSetVal(), and solUnlinkVar().

solIncArrayVal()

static SCIP_RETCODE solIncArrayVal ( SCIP_SOL *  sol, SCIP_SET *  set, SCIP_VAR *  var, SCIP_Real  incval  )

static

increases value of variable in the solution's array

Parameters

sol	primal CIP solution
set	global SCIP settings
var	problem variable
incval	increase of variable's solution value

Definition at line 106 of file sol.c.

References SCIP_Sol::hasinfval, NULL, SCIP_CALL, SCIP_OKAY, SCIP_UNKNOWN, SCIPboolarrayGetVal(), SCIPboolarraySetVal(), SCIPrealarrayGetVal(), SCIPrealarrayIncVal(), SCIPrealarraySetVal(), SCIPsetIsInfinity(), SCIPvarGetIndex(), SCIPvarMarkNotDeletable(), TRUE, SCIP_Sol::valid, and SCIP_Sol::vals.

Referenced by SCIPsolIncVal().

solGetArrayVal()

static SCIP_Real solGetArrayVal ( SCIP_SOL *  sol, SCIP_VAR *  var  )

static

returns the value of the variable in the given solution

Parameters

sol	primal CIP solution
var	problem variable

Definition at line 147 of file sol.c.

References NULL, SCIP_SOLORIGIN_LPSOL, SCIP_SOLORIGIN_NLPSOL, SCIP_SOLORIGIN_ORIGINAL, SCIP_SOLORIGIN_PARTIAL, SCIP_SOLORIGIN_PSEUDOSOL, SCIP_SOLORIGIN_RELAXSOL, SCIP_SOLORIGIN_UNKNOWN, SCIP_SOLORIGIN_ZERO, SCIP_UNKNOWN, SCIPABORT, SCIPboolarrayGetVal(), SCIPerrorMessage, SCIPrealarrayGetVal(), SCIPvarGetIndex(), SCIPvarGetLPSol(), SCIPvarGetNLPSol(), SCIPvarGetPseudoSol(), SCIPvarGetRelaxSolTransVar(), SCIP_Sol::solorigin, SCIP_Sol::valid, and SCIP_Sol::vals.

Referenced by SCIPsolGetRayVal(), SCIPsolGetVal(), SCIPsolIncVal(), SCIPsolRound(), SCIPsolSetVal(), and SCIPsolUpdateVarObj().

solUnlinkVar()

static SCIP_RETCODE solUnlinkVar ( SCIP_SOL *  sol, SCIP_SET *  set, SCIP_VAR *  var  )

static

stores solution value of variable in solution's own array

Parameters

sol	primal CIP solution
set	global SCIP settings
var	problem variable

Definition at line 198 of file sol.c.

References NULL, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_Real, SCIP_SOLORIGIN_LPSOL, SCIP_SOLORIGIN_NLPSOL, SCIP_SOLORIGIN_ORIGINAL, SCIP_SOLORIGIN_PARTIAL, SCIP_SOLORIGIN_PSEUDOSOL, SCIP_SOLORIGIN_RELAXSOL, SCIP_SOLORIGIN_UNKNOWN, SCIP_SOLORIGIN_ZERO, SCIP_UNKNOWN, SCIP_VARSTATUS_COLUMN, SCIP_VARSTATUS_LOOSE, SCIPboolarrayGetVal(), SCIPerrorMessage, SCIPsetDebugMsg, SCIPvarGetIndex(), SCIPvarGetLPSol(), SCIPvarGetName(), SCIPvarGetNLPSol(), SCIPvarGetPseudoSol(), SCIPvarGetRelaxSolTransVar(), SCIPvarGetStatus(), SCIPvarIsTransformed(), SCIP_Sol::solorigin, solSetArrayVal(), and SCIP_Sol::valid.

Referenced by SCIPsolUnlink().

solStamp()

static void solStamp ( SCIP_SOL *  sol, SCIP_STAT *  stat, SCIP_TREE *  tree, SCIP_Bool  checktime  )

static

sets the solution time, nodenum, runnum, and depth stamp to the current values

Parameters

sol	primal CIP solution
stat	problem statistics data
tree	branch and bound tree, or NULL
checktime	should the time be updated?

Definition at line 260 of file sol.c.

References SCIP_Sol::depth, SCIP_Sol::lpcount, SCIP_Stat::lpcount, SCIP_Stat::nnodes, SCIP_Sol::nodenum, SCIP_Stat::nruns, NULL, SCIP_Sol::runnum, SCIPclockGetLastTime(), SCIPclockGetTime(), SCIPtreeGetCurrentDepth(), SCIP_Stat::solvingtime, and SCIP_Sol::time.

Referenced by SCIPsolClear(), SCIPsolCreate(), SCIPsolCreateOriginal(), SCIPsolCreatePartial(), SCIPsolCreateUnknown(), SCIPsolIncVal(), SCIPsolLinkLPSol(), SCIPsolLinkNLPSol(), SCIPsolLinkPseudoSol(), SCIPsolLinkRelaxSol(), SCIPsolSetUnknown(), and SCIPsolSetVal().

SCIPsolCreate()

SCIP_RETCODE SCIPsolCreate	(	SCIP_SOL **	sol,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PRIMAL *	primal,
		SCIP_TREE *	tree,
		SCIP_HEUR *	heur
	)

creates primal CIP solution, initialized to zero

Parameters

sol	pointer to primal CIP solution
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
primal	primal data
tree	branch and bound tree
heur	heuristic that found the solution (or NULL if it's from the tree)

Definition at line 288 of file sol.c.

References BMSallocBlockMemory, FALSE, NULL, SCIP_ALLOC, SCIP_CALL, SCIP_OKAY, SCIP_SOLORIGIN_ZERO, SCIPboolarrayCreate(), SCIPprimalSolCreated(), SCIPrealarrayCreate(), SCIPsolResetViolations(), SCIPsolSetHeur(), SCIP_Stat::solindex, solStamp(), and TRUE.

Referenced by SCIPcreateSol(), SCIPprimalTransformSol(), SCIPsolCreateLPSol(), SCIPsolCreateNLPSol(), SCIPsolCreatePseudoSol(), SCIPsolCreateRelaxSol(), and updatePrimalRay().

SCIPsolCreateOriginal()

SCIP_RETCODE SCIPsolCreateOriginal	(	SCIP_SOL **	sol,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PROB *	origprob,
		SCIP_PRIMAL *	primal,
		SCIP_TREE *	tree,
		SCIP_HEUR *	heur
	)

creates primal CIP solution in original problem space, initialized to the offset in the original problem

Parameters

sol	pointer to primal CIP solution
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
origprob	original problem data
primal	primal data
tree	branch and bound tree
heur	heuristic that found the solution (or NULL if it's from the tree)

Definition at line 325 of file sol.c.

References BMSallocBlockMemory, FALSE, NULL, SCIP_Prob::objoffset, SCIP_ALLOC, SCIP_CALL, SCIP_OKAY, SCIP_SOLORIGIN_ORIGINAL, SCIPboolarrayCreate(), SCIPprimalSolCreated(), SCIPrealarrayCreate(), SCIPsolResetViolations(), SCIPsolSetHeur(), SCIP_Stat::solindex, solStamp(), and TRUE.

Referenced by SCIPcreateOrigSol(), and SCIPcreateSol().

SCIPsolCopy()

SCIP_RETCODE SCIPsolCopy	(	SCIP_SOL **	sol,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PRIMAL *	primal,
		SCIP_SOL *	sourcesol
	)

creates a copy of a primal CIP solution

Parameters

sol	pointer to store the copy of the primal CIP solution
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
primal	primal data
sourcesol	primal CIP solution to copy

Definition at line 362 of file sol.c.

References SCIP_Viol::absviolbounds, SCIP_Viol::absviolcons, SCIP_Viol::absviolintegrality, SCIP_Viol::absviollprows, BMSallocBlockMemory, SCIP_Sol::depth, SCIP_Sol::hasinfval, SCIP_Sol::lpcount, SCIP_Sol::nodenum, NULL, SCIP_Sol::obj, SCIP_Viol::relviolbounds, SCIP_Viol::relviolcons, SCIP_Viol::relviollprows, SCIP_Sol::runnum, SCIP_ALLOC, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_SOLTYPE_HEUR, SCIP_SOLTYPE_LPRELAX, SCIP_SOLTYPE_PSEUDO, SCIP_SOLTYPE_RELAX, SCIP_SOLTYPE_STRONGBRANCH, SCIP_SOLTYPE_UNKNOWN, SCIPboolarrayCopy(), SCIPerrorMessage, SCIPprimalSolCreated(), SCIPrealarrayCopy(), SCIPsolGetHeur(), SCIPsolGetRelax(), SCIPsolSetHeur(), SCIPsolSetRelax(), SCIP_Stat::solindex, SCIP_Sol::solorigin, SCIP_Sol::time, SCIP_Sol::type, SCIP_Sol::valid, SCIP_Sol::vals, and SCIP_Sol::viol.

Referenced by SCIPcreateSolCopy(), SCIPcreateSolCopyOrig(), SCIPprimalAddOrigSol(), SCIPprimalAddSol(), SCIPprimalTrySol(), SCIPprimalUpdateRay(), SCIPreoptAddOptSol(), and soltreeAddSol().

SCIPsolTransform()

SCIP_RETCODE SCIPsolTransform	(	SCIP_SOL *	sol,
		SCIP_SOL **	transsol,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_PRIMAL *	primal
	)

transformes given original solution to the transformed space; a corresponding transformed solution has to be given which is copied into the existing solution and freed afterwards

Parameters

sol	primal CIP solution to change, living in original space
transsol	pointer to corresponding transformed primal CIP solution
blkmem	block memory
set	global SCIP settings
primal	primal data

Definition at line 426 of file sol.c.

References NULL, SCIP_Sol::obj, SCIP_Sol::primalindex, SCIP_CALL, SCIP_OKAY, SCIPsolFree(), SCIPsolIsOriginal(), SCIP_Sol::solorigin, SCIP_Sol::valid, and SCIP_Sol::vals.

Referenced by primalAddSol().

SCIPsolAdjustImplicitSolVals()

SCIP_RETCODE SCIPsolAdjustImplicitSolVals	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PROB *	prob,
		SCIP_TREE *	tree,
		SCIP_Bool	uselprows
	)

adjusts solution values of implicit integer variables in handed solution. Solution objective value is not deteriorated by this method.

Parameters

sol	primal CIP solution
set	global SCIP settings
stat	problem statistics data
prob	either original or transformed problem, depending on sol origin
tree	branch and bound tree
uselprows	should LP row information be considered for none-objective variables

Definition at line 473 of file sol.c.

References FALSE, NULL, r, SCIP_Bool, SCIP_CALL, SCIP_LOCKTYPE_MODEL, SCIP_OKAY, SCIP_Real, SCIP_VARSTATUS_COLUMN, SCIP_VARTYPE_IMPLINT, SCIPcolGetNNonz(), SCIPcolGetRows(), SCIPcolGetVals(), SCIPprobGetNBinVars(), SCIPprobGetNImplVars(), SCIPprobGetNIntVars(), SCIPprobGetVars(), SCIProwGetLhs(), SCIProwGetRhs(), SCIProwGetSolActivity(), SCIProwIsInLP(), SCIProwIsLocal(), SCIPsetCeil(), SCIPsetFloor(), SCIPsetIsFeasGE(), SCIPsetIsFeasGT(), SCIPsetIsFeasIntegral(), SCIPsetIsFeasLE(), SCIPsetIsFeasLT(), SCIPsetIsFeasNegative(), SCIPsetIsFeasPositive(), SCIPsetIsInfinity(), SCIPsetIsNegative(), SCIPsetIsPositive(), SCIPsetIsZero(), SCIPsolGetVal(), SCIPsolSetVal(), SCIPvarGetCol(), SCIPvarGetLbGlobal(), SCIPvarGetNLocksDownType(), SCIPvarGetNLocksUpType(), SCIPvarGetStatus(), SCIPvarGetType(), SCIPvarGetUbGlobal(), SCIPvarGetUnchangedObj(), and TRUE.

Referenced by SCIPadjustImplicitSolVals().

SCIPsolCreateLPSol()

SCIP_RETCODE SCIPsolCreateLPSol	(	SCIP_SOL **	sol,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PROB *	prob,
		SCIP_PRIMAL *	primal,
		SCIP_TREE *	tree,
		SCIP_LP *	lp,
		SCIP_HEUR *	heur
	)

creates primal CIP solution, initialized to the current LP solution

Parameters

sol	pointer to primal CIP solution
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
prob	transformed problem data
primal	primal data
tree	branch and bound tree
lp	current LP data
heur	heuristic that found the solution (or NULL if it's from the tree)

Definition at line 608 of file sol.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPlpIsSolved(), SCIPsolCreate(), and SCIPsolLinkLPSol().

Referenced by addCurrentSolution(), SCIPcreateLPSol(), SCIPsolCreateCurrentSol(), SCIPsolveCIP(), and solveNodeLP().

SCIPsolCreateNLPSol()

SCIP_RETCODE SCIPsolCreateNLPSol	(	SCIP_SOL **	sol,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PRIMAL *	primal,
		SCIP_TREE *	tree,
		SCIP_NLP *	nlp,
		SCIP_HEUR *	heur
	)

creates primal CIP solution, initialized to the current NLP solution

Parameters

sol	pointer to primal CIP solution
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
primal	primal data
tree	branch and bound tree
nlp	current NLP data
heur	heuristic that found the solution (or NULL if it's from the tree)

Definition at line 631 of file sol.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPsolCreate(), and SCIPsolLinkNLPSol().

Referenced by SCIPcreateNLPSol(), and SCIPnlrowRecalcNLPActivity().

SCIPsolCreateRelaxSol()

SCIP_RETCODE SCIPsolCreateRelaxSol	(	SCIP_SOL **	sol,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PRIMAL *	primal,
		SCIP_TREE *	tree,
		SCIP_RELAXATION *	relaxation,
		SCIP_HEUR *	heur
	)

creates primal CIP solution, initialized to the current relaxation solution

Parameters

sol	pointer to primal CIP solution
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
primal	primal data
tree	branch and bound tree
relaxation	global relaxation data
heur	heuristic that found the solution (or NULL if it's from the tree)

Definition at line 652 of file sol.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPrelaxationGetSolRelax(), SCIPrelaxationIsSolValid(), SCIPsolCreate(), SCIPsolLinkRelaxSol(), and SCIPsolSetRelax().

Referenced by addCurrentSolution(), enforceConstraints(), SCIPcreateRelaxSol(), SCIPsolveCIP(), and solveNode().

SCIPsolCreatePseudoSol()

SCIP_RETCODE SCIPsolCreatePseudoSol	(	SCIP_SOL **	sol,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PROB *	prob,
		SCIP_PRIMAL *	primal,
		SCIP_TREE *	tree,
		SCIP_LP *	lp,
		SCIP_HEUR *	heur
	)

creates primal CIP solution, initialized to the current pseudo solution

Parameters

sol	pointer to primal CIP solution
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
prob	transformed problem data
primal	primal data
tree	branch and bound tree, or NULL
lp	current LP data
heur	heuristic that found the solution (or NULL if it's from the tree)

Definition at line 678 of file sol.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPsolCreate(), SCIPsolLinkPseudoSol(), and SCIPsolSetPseudo().

Referenced by addCurrentSolution(), SCIPcreatePseudoSol(), SCIPnlrowRecalcPseudoActivity(), SCIPsolCreateCurrentSol(), and SCIPsolveCIP().

SCIPsolCreateCurrentSol()

SCIP_RETCODE SCIPsolCreateCurrentSol	(	SCIP_SOL **	sol,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PROB *	prob,
		SCIP_PRIMAL *	primal,
		SCIP_TREE *	tree,
		SCIP_LP *	lp,
		SCIP_HEUR *	heur
	)

creates primal CIP solution, initialized to the current solution

Parameters

sol	pointer to primal CIP solution
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
prob	transformed problem data
primal	primal data
tree	branch and bound tree
lp	current LP data
heur	heuristic that found the solution (or NULL if it's from the tree)

Definition at line 703 of file sol.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPsolCreateLPSol(), SCIPsolCreatePseudoSol(), and SCIPtreeHasCurrentNodeLP().

Referenced by primalLinkCurrentSol(), SCIPcreateCurrentSol(), SCIPprintSol(), SCIPprintTransSol(), and solveNode().

SCIPsolCreatePartial()

SCIP_RETCODE SCIPsolCreatePartial	(	SCIP_SOL **	sol,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PRIMAL *	primal,
		SCIP_HEUR *	heur
	)

creates partial primal CIP solution, initialized to unknown values

Parameters

sol	pointer to primal CIP solution
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
primal	primal data
heur	heuristic that found the solution (or NULL if it's from the tree)

Definition at line 730 of file sol.c.

References BMSallocBlockMemory, FALSE, NULL, SCIP_ALLOC, SCIP_CALL, SCIP_OKAY, SCIP_SOLORIGIN_PARTIAL, SCIP_UNKNOWN, SCIPboolarrayCreate(), SCIPprimalSolCreated(), SCIPrealarrayCreate(), SCIPsolResetViolations(), SCIPsolSetHeur(), SCIP_Stat::solindex, solStamp(), and TRUE.

Referenced by SCIPcreatePartialSol().

SCIPsolCreateUnknown()

SCIP_RETCODE SCIPsolCreateUnknown	(	SCIP_SOL **	sol,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PRIMAL *	primal,
		SCIP_TREE *	tree,
		SCIP_HEUR *	heur
	)

creates primal CIP solution, initialized to unknown values

Parameters

sol	pointer to primal CIP solution
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
primal	primal data
tree	branch and bound tree
heur	heuristic that found the solution (or NULL if it's from the tree)

Definition at line 766 of file sol.c.

References BMSallocBlockMemory, FALSE, NULL, SCIP_ALLOC, SCIP_CALL, SCIP_OKAY, SCIP_SOLORIGIN_UNKNOWN, SCIPboolarrayCreate(), SCIPprimalSolCreated(), SCIPrealarrayCreate(), SCIPsolResetViolations(), SCIPsolSetHeur(), SCIP_Stat::solindex, solStamp(), and TRUE.

Referenced by SCIPcreateUnknownSol().

SCIPsolFree()

SCIP_RETCODE SCIPsolFree	(	SCIP_SOL **	sol,
		BMS_BLKMEM *	blkmem,
		SCIP_PRIMAL *	primal
	)

frees primal CIP solution

Parameters

sol	pointer to primal CIP solution
blkmem	block memory
primal	primal data

Definition at line 801 of file sol.c.

References BMSfreeBlockMemory, NULL, SCIP_CALL, SCIP_OKAY, SCIPboolarrayFree(), SCIPprimalSolFreed(), and SCIPrealarrayFree().

Referenced by enforceConstraints(), freeTransform(), primalAddOrigSol(), primalAddSol(), SCIPfreeSol(), SCIPnlrowRecalcNLPActivity(), SCIPnlrowRecalcPseudoActivity(), SCIPprimalAddOrigSolFree(), SCIPprimalAddSolFree(), SCIPprimalClear(), SCIPprimalFree(), SCIPprimalTrySolFree(), SCIPprimalUpdateRay(), SCIPprintSol(), SCIPprintTransSol(), SCIPreoptFree(), SCIPsolTransform(), SCIPsolveCIP(), SCIPtransformProb(), SCIPtrySolFree(), soltreefreeNode(), solveNode(), solveNodeLP(), and updatePrimalRay().

SCIPsolLinkLPSol()

SCIP_RETCODE SCIPsolLinkLPSol	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PROB *	prob,
		SCIP_TREE *	tree,
		SCIP_LP *	lp
	)

copies current LP solution into CIP solution by linking

Parameters

sol	primal CIP solution
set	global SCIP settings
stat	problem statistics data
prob	transformed problem data
tree	branch and bound tree
lp	current LP data

Definition at line 820 of file sol.c.

References NULL, SCIP_Sol::obj, SCIP_Col::primsol, SCIP_CALL, SCIP_OKAY, SCIP_SOLORIGIN_LPSOL, SCIPcolGetVar(), SCIPlpDiving(), SCIPlpDivingObjChanged(), SCIPlpGetCols(), SCIPlpGetLooseObjval(), SCIPlpGetNCols(), SCIPlpGetObjval(), SCIPsetDebugMsg, SCIPsetIsInfinity(), SCIPtreeProbing(), SCIPvarGetUnchangedObj(), solClearArrays(), SCIP_Sol::solorigin, solStamp(), SCIP_Lp::solved, and TRUE.

Referenced by SCIPlinkLPSol(), SCIPsolCreateLPSol(), and SCIPsolLinkCurrentSol().

SCIPsolLinkNLPSol()

SCIP_RETCODE SCIPsolLinkNLPSol	(	SCIP_SOL *	sol,
		SCIP_STAT *	stat,
		SCIP_TREE *	tree,
		SCIP_NLP *	nlp
	)

copies current NLP solution into CIP solution by linking

Parameters

sol	primal CIP solution
stat	problem statistics data
tree	branch and bound tree
nlp	current NLP data

Definition at line 878 of file sol.c.

References NULL, SCIP_Sol::obj, SCIP_CALL, SCIP_OKAY, SCIP_SOLORIGIN_NLPSOL, SCIPnlpGetNVars(), SCIPnlpGetObjval(), SCIPnlpGetVars(), SCIPnlpHasSolution(), SCIPnlpIsDivingObjChanged(), SCIPstatDebugMsg, SCIPvarGetNLPSol(), SCIPvarGetUnchangedObj(), SCIPvarIsActive(), solClearArrays(), SCIP_Sol::solorigin, solStamp(), and TRUE.

Referenced by SCIPlinkNLPSol(), and SCIPsolCreateNLPSol().

SCIPsolLinkRelaxSol()

SCIP_RETCODE SCIPsolLinkRelaxSol	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_TREE *	tree,
		SCIP_RELAXATION *	relaxation
	)

copies current relaxation solution into CIP solution by linking

Parameters

sol	primal CIP solution
set	global SCIP settings
stat	problem statistics data
tree	branch and bound tree
relaxation	global relaxation data

Definition at line 929 of file sol.c.

References NULL, SCIP_Sol::obj, SCIP_CALL, SCIP_OKAY, SCIP_SOLORIGIN_RELAXSOL, SCIPrelaxationGetSolObj(), SCIPrelaxationIsSolValid(), SCIPsetDebugMsg, solClearArrays(), SCIP_Sol::solorigin, solStamp(), and TRUE.

Referenced by SCIPlinkRelaxSol(), and SCIPsolCreateRelaxSol().

SCIPsolLinkPseudoSol()

SCIP_RETCODE SCIPsolLinkPseudoSol	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PROB *	prob,
		SCIP_TREE *	tree,
		SCIP_LP *	lp
	)

copies current pseudo solution into CIP solution by linking

Parameters

sol	primal CIP solution
set	global SCIP settings
stat	problem statistics data
prob	transformed problem data
tree	branch and bound tree, or NULL
lp	current LP data

Definition at line 959 of file sol.c.

References NULL, SCIP_Sol::obj, SCIP_CALL, SCIP_OKAY, SCIP_SOLORIGIN_PSEUDOSOL, SCIPlpGetPseudoObjval(), SCIPsetDebugMsg, solClearArrays(), SCIP_Sol::solorigin, solStamp(), and TRUE.

Referenced by SCIPlinkPseudoSol(), SCIPsolCreatePseudoSol(), and SCIPsolLinkCurrentSol().

SCIPsolLinkCurrentSol()

SCIP_RETCODE SCIPsolLinkCurrentSol	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PROB *	prob,
		SCIP_TREE *	tree,
		SCIP_LP *	lp
	)

copies current solution (LP or pseudo solution) into CIP solution by linking

Parameters

sol	primal CIP solution
set	global SCIP settings
stat	problem statistics data
prob	transformed problem data
tree	branch and bound tree
lp	current LP data

Definition at line 988 of file sol.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPlpIsSolved(), SCIPsetDebugMsg, SCIPsolLinkLPSol(), SCIPsolLinkPseudoSol(), and SCIPtreeHasCurrentNodeLP().

Referenced by primalLinkCurrentSol(), and SCIPlinkCurrentSol().

SCIPsolClear()

SCIP_RETCODE SCIPsolClear	(	SCIP_SOL *	sol,
		SCIP_STAT *	stat,
		SCIP_TREE *	tree
	)

clears primal CIP solution

Parameters

sol	primal CIP solution
stat	problem statistics data
tree	branch and bound tree

Definition at line 1014 of file sol.c.

References NULL, SCIP_Sol::obj, SCIP_CALL, SCIP_OKAY, SCIP_SOLORIGIN_ZERO, solClearArrays(), SCIP_Sol::solorigin, solStamp(), and TRUE.

Referenced by SCIPclearSol().

SCIPsolSetUnknown()

SCIP_RETCODE SCIPsolSetUnknown	(	SCIP_SOL *	sol,
		SCIP_STAT *	stat,
		SCIP_TREE *	tree
	)

declares all entries in the primal CIP solution to be unknown

Parameters

sol	primal CIP solution
stat	problem statistics data
tree	branch and bound tree

Definition at line 1031 of file sol.c.

References NULL, SCIP_Sol::obj, SCIP_CALL, SCIP_OKAY, SCIP_SOLORIGIN_UNKNOWN, solClearArrays(), SCIP_Sol::solorigin, solStamp(), and TRUE.

SCIPsolUnlink()

SCIP_RETCODE SCIPsolUnlink	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_PROB *	prob
	)

stores solution values of variables in solution's own array

Parameters

sol	primal CIP solution
set	global SCIP settings
prob	transformed problem data

Definition at line 1048 of file sol.c.

References NULL, SCIP_Prob::nvars, SCIP_CALL, SCIP_OKAY, SCIP_SOLORIGIN_UNKNOWN, SCIP_SOLORIGIN_ZERO, SCIPsetDebugMsg, SCIPsolIsOriginal(), SCIP_Sol::solorigin, solUnlinkVar(), and SCIP_Prob::vars.

Referenced by primalAddSol(), SCIPaddSol(), SCIPaddSolFree(), SCIPtrySol(), SCIPtrySolFree(), and SCIPunlinkSol().

SCIPsolSetVal()

SCIP_RETCODE SCIPsolSetVal	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_TREE *	tree,
		SCIP_VAR *	var,
		SCIP_Real	val
	)

sets value of variable in primal CIP solution

Parameters

sol	primal CIP solution
set	global SCIP settings
stat	problem statistics data
tree	branch and bound tree, or NULL
var	variable to add to solution
val	solution value of variable

Definition at line 1077 of file sol.c.

References FALSE, SCIP_Stat::lpcount, SCIP_Stat::nnodes, SCIP_Sol::nodenum, SCIP_Stat::nruns, NULL, SCIP_Sol::runnum, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_Real, SCIP_SOLORIGIN_LPSOL, SCIP_SOLORIGIN_ORIGINAL, SCIP_SOLORIGIN_PARTIAL, SCIP_SOLORIGIN_UNKNOWN, SCIP_SOLORIGIN_ZERO, SCIP_UNKNOWN, SCIP_VARSTATUS_AGGREGATED, SCIP_VARSTATUS_COLUMN, SCIP_VARSTATUS_FIXED, SCIP_VARSTATUS_LOOSE, SCIP_VARSTATUS_MULTAGGR, SCIP_VARSTATUS_NEGATED, SCIP_VARSTATUS_ORIGINAL, SCIPboolarrayGetVal(), SCIPerrorMessage, SCIPisFinite, SCIPsetDebugMsg, SCIPsetInfinity(), SCIPsetIsInfinity(), SCIPsetIsZero(), SCIPsolIsOriginal(), SCIPsolIsPartial(), SCIPsolSetVal(), SCIPvarGetAggrConstant(), SCIPvarGetAggrScalar(), SCIPvarGetAggrVar(), SCIPvarGetIndex(), SCIPvarGetLbGlobal(), SCIPvarGetMultaggrConstant(), SCIPvarGetMultaggrNVars(), SCIPvarGetMultaggrScalars(), SCIPvarGetMultaggrVars(), SCIPvarGetName(), SCIPvarGetNegationConstant(), SCIPvarGetNegationVar(), SCIPvarGetStatus(), SCIPvarGetTransVar(), SCIPvarGetUnchangedObj(), solGetArrayVal(), SCIP_Sol::solorigin, solSetArrayVal(), and solStamp().

Referenced by SCIPprimalTransformSol(), SCIPsetSolVal(), SCIPsetSolVals(), SCIPsolAdjustImplicitSolVals(), SCIPsolRound(), SCIPsolSetVal(), separateAlternativeProofs(), and updatePrimalRay().

SCIPsolIncVal()

SCIP_RETCODE SCIPsolIncVal	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_TREE *	tree,
		SCIP_VAR *	var,
		SCIP_Real	incval
	)

increases value of variable in primal CIP solution

Parameters

sol	primal CIP solution
set	global SCIP settings
stat	problem statistics data
tree	branch and bound tree
var	variable to increase solution value for
incval	increment for solution value of variable

Definition at line 1271 of file sol.c.

References FALSE, SCIP_Stat::lpcount, SCIP_Stat::nnodes, SCIP_Sol::nodenum, SCIP_Stat::nruns, NULL, SCIP_Sol::runnum, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_Real, SCIP_SOLORIGIN_LPSOL, SCIP_SOLORIGIN_ORIGINAL, SCIP_SOLORIGIN_ZERO, SCIP_VARSTATUS_AGGREGATED, SCIP_VARSTATUS_COLUMN, SCIP_VARSTATUS_FIXED, SCIP_VARSTATUS_LOOSE, SCIP_VARSTATUS_MULTAGGR, SCIP_VARSTATUS_NEGATED, SCIP_VARSTATUS_ORIGINAL, SCIPboolarrayGetVal(), SCIPerrorMessage, SCIPsetDebugMsg, SCIPsetIsInfinity(), SCIPsetIsZero(), SCIPsolIncVal(), SCIPsolIsOriginal(), SCIPvarGetAggrScalar(), SCIPvarGetAggrVar(), SCIPvarGetIndex(), SCIPvarGetName(), SCIPvarGetNegationVar(), SCIPvarGetStatus(), SCIPvarGetTransVar(), SCIPvarGetUnchangedObj(), solGetArrayVal(), solIncArrayVal(), SCIP_Sol::solorigin, and solStamp().

Referenced by SCIPincSolVal(), and SCIPsolIncVal().

SCIPsolGetVal()

SCIP_Real SCIPsolGetVal	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_VAR *	var
	)

returns value of variable in primal CIP solution

Parameters

sol	primal CIP solution
set	global SCIP settings
stat	problem statistics data
var	variable to get value for

Definition at line 1347 of file sol.c.

References SCIP_Sol::lpcount, SCIP_Stat::lpcount, SCIP_Stat::nnodes, SCIP_Sol::nodenum, SCIP_Stat::nruns, NULL, SCIP_Sol::runnum, scalars, SCIP_INVALID, SCIP_OKAY, SCIP_Real, SCIP_SOLORIGIN_LPSOL, SCIP_SOLORIGIN_ORIGINAL, SCIP_SOLORIGIN_PARTIAL, SCIP_SOLORIGIN_UNKNOWN, SCIP_SOLORIGIN_ZERO, SCIP_UNKNOWN, SCIP_VARSTATUS_AGGREGATED, SCIP_VARSTATUS_COLUMN, SCIP_VARSTATUS_FIXED, SCIP_VARSTATUS_LOOSE, SCIP_VARSTATUS_MULTAGGR, SCIP_VARSTATUS_NEGATED, SCIP_VARSTATUS_ORIGINAL, SCIPABORT, SCIPboolarrayGetVal(), SCIPerrorMessage, SCIPsetInfinity(), SCIPsetIsInfinity(), SCIPsolGetVal(), SCIPsolIsOriginal(), SCIPvarGetAggrConstant(), SCIPvarGetAggrScalar(), SCIPvarGetAggrVar(), SCIPvarGetIndex(), SCIPvarGetLbGlobal(), SCIPvarGetLbLocal(), SCIPvarGetMultaggrConstant(), SCIPvarGetMultaggrNVars(), SCIPvarGetMultaggrScalars(), SCIPvarGetMultaggrVars(), SCIPvarGetNegationConstant(), SCIPvarGetNegationVar(), SCIPvarGetOrigvarSum(), SCIPvarGetStatus(), SCIPvarGetTransVar(), SCIPvarGetUbGlobal(), SCIPvarGetUbLocal(), SCIPvarIsTransformed(), solGetArrayVal(), SCIP_Sol::solorigin, and SCIP_Sol::valid.

Referenced by checkSolOrig(), SCIPgetSolVal(), SCIPgetSolVals(), SCIPnlrowGetSolActivity(), SCIPprimalTransformSol(), SCIProwGetLPSolCutoffDistance(), SCIProwGetSolActivity(), SCIPsolAdjustImplicitSolVals(), SCIPsolCheck(), SCIPsolGetVal(), SCIPsolMarkPartial(), SCIPsolPrint(), SCIPsolRecomputeObj(), SCIPsolRetransform(), SCIPsolsAreEqual(), SCIPsolUpdateVarsum(), SCIPvarGetClosestVlb(), SCIPvarGetClosestVub(), separateSolution(), and soltreeAddSol().

SCIPsolGetRayVal()

SCIP_Real SCIPsolGetRayVal	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_VAR *	var
	)

returns value of variable in primal ray represented by primal CIP solution

Parameters

sol	primal CIP solution, representing a primal ray
set	global SCIP settings
stat	problem statistics data
var	variable to get value for

Definition at line 1477 of file sol.c.

References NULL, REALABS, scalars, SCIP_Real, SCIP_SOLORIGIN_ZERO, SCIP_UNKNOWN, SCIP_VARSTATUS_AGGREGATED, SCIP_VARSTATUS_COLUMN, SCIP_VARSTATUS_FIXED, SCIP_VARSTATUS_LOOSE, SCIP_VARSTATUS_MULTAGGR, SCIP_VARSTATUS_NEGATED, SCIP_VARSTATUS_ORIGINAL, SCIPABORT, SCIPerrorMessage, SCIPsetIsInfinity(), SCIPsolGetRayVal(), SCIPsolIsOriginal(), SCIPvarGetAggrScalar(), SCIPvarGetAggrVar(), SCIPvarGetLbGlobal(), SCIPvarGetLbLocal(), SCIPvarGetMultaggrNVars(), SCIPvarGetMultaggrScalars(), SCIPvarGetMultaggrVars(), SCIPvarGetNegationVar(), SCIPvarGetStatus(), SCIPvarGetTransVar(), SCIPvarGetUbGlobal(), SCIPvarGetUbLocal(), solGetArrayVal(), and SCIP_Sol::solorigin.

Referenced by SCIPgetPrimalRayVal(), SCIPsolGetRayVal(), and SCIPsolPrintRay().

SCIPsolGetObj()

SCIP_Real SCIPsolGetObj	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_PROB *	transprob,
		SCIP_PROB *	origprob
	)

gets objective value of primal CIP solution in transformed problem

Parameters

sol	primal CIP solution
set	global SCIP settings
transprob	tranformed problem data
origprob	original problem data

Definition at line 1546 of file sol.c.

References NULL, SCIP_Sol::obj, SCIPprobInternObjval(), and SCIPsolIsOriginal().

Referenced by addCurrentSolution(), primalAddSol(), primalExistsSol(), primalSearchSolPos(), SCIPgetSolOrigObj(), SCIPgetSolTransObj(), SCIPprimalAddSol(), SCIPprimalRetransformSolutions(), SCIPprimalUpdateObjoffset(), SCIPprimalUpperboundIsSol(), SCIPprintMIPStart(), SCIPprintSol(), SCIPprintSolutionStatistics(), SCIPprintTransSol(), SCIPsetRelaxSolValsSol(), SCIPsolsAreEqual(), SCIPsolveCIP(), SCIPtransformProb(), solOfInterest(), and sortPrimalSols().

SCIPsolUpdateVarObj()

void SCIPsolUpdateVarObj	(	SCIP_SOL *	sol,
		SCIP_VAR *	var,
		SCIP_Real	oldobj,
		SCIP_Real	newobj
	)

updates primal solutions after a change in a variable's objective value

Parameters

sol	primal CIP solution
var	problem variable
oldobj	old objective value
newobj	new objective value

Definition at line 1563 of file sol.c.

References NULL, SCIP_Sol::obj, SCIP_Real, SCIP_UNKNOWN, SCIP_VARSTATUS_COLUMN, SCIP_VARSTATUS_LOOSE, SCIPsolIsOriginal(), SCIPvarGetStatus(), and solGetArrayVal().

Referenced by SCIPprimalUpdateVarObj().

SCIPsolMarkPartial()

SCIP_RETCODE SCIPsolMarkPartial	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_VAR **	vars,
		int	nvars
	)

Parameters

sol	primal CIP solution
set	global SCIP settings
stat	problem statistics
vars	problem variables
nvars	number of problem variables

Definition at line 1582 of file sol.c.

References FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_SOLORIGIN_ORIGINAL, SCIP_SOLORIGIN_PARTIAL, SCIP_UNKNOWN, SCIPboolarraySetVal(), SCIPrealarraySetVal(), SCIPsetAllocBufferArray, SCIPsetFreeBufferArray, SCIPsolGetVal(), SCIPvarGetIndex(), SCIPvarIsTransformed(), SCIPvarMarkNotDeletable(), SCIP_Sol::solorigin, TRUE, SCIP_Sol::valid, and SCIP_Sol::vals.

Referenced by readSolFile(), and readXmlSolFile().

SCIPsolCheck()

SCIP_RETCODE SCIPsolCheck	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_MESSAGEHDLR *	messagehdlr,
		BMS_BLKMEM *	blkmem,
		SCIP_STAT *	stat,
		SCIP_PROB *	prob,
		SCIP_Bool	printreason,
		SCIP_Bool	completely,
		SCIP_Bool	checkbounds,
		SCIP_Bool	checkintegrality,
		SCIP_Bool	checklprows,
		SCIP_Bool *	feasible
	)

checks primal CIP solution for feasibility

Note

The difference between SCIPsolCheck() and SCIPcheckSolOrig() is that modifiable constraints are handled differently. There might be some variables which do not have an original counter part (e.g. in branch-and-price). Therefore, modifiable constraints can not be double-checked in the original space.

Parameters

sol	primal CIP solution
set	global SCIP settings
messagehdlr	message handler
blkmem	block memory
stat	problem statistics
prob	transformed problem data
printreason	Should all reasons of violations be printed?
completely	Should all violations be checked?
checkbounds	Should the bounds of the variables be checked?
checkintegrality	Has integrality to be checked?
checklprows	Do constraints represented by rows in the current LP have to be checked?
feasible	stores whether solution is feasible

Definition at line 1647 of file sol.c.

References FALSE, h, SCIP_Sol::hasinfval, MAX, SCIP_Sol::nodenum, NULL, SCIP_Prob::nvars, SCIP_Sol::obj, SCIP_CALL, SCIP_FEASIBLE, SCIP_OKAY, SCIP_Real, SCIP_UNKNOWN, SCIPconshdlrCheck(), SCIPconshdlrGetName(), SCIPdebugPrintf, SCIPmessagePrintInfo(), SCIPsetDebugMsg, SCIPsetDebugMsgPrint, SCIPsetIsFeasGT(), SCIPsetIsFeasLT(), SCIPsetIsGE(), SCIPsetIsGT(), SCIPsetIsInfinity(), SCIPsetIsLE(), SCIPsetIsLT(), SCIPsolGetVal(), SCIPsolIsOriginal(), SCIPsolResetViolations(), SCIPvarGetLbGlobal(), SCIPvarGetName(), SCIPvarGetUbGlobal(), SCIPvarGetUnchangedObj(), SCIP_Sol::solorigin, TRUE, and SCIP_Prob::vars.

Referenced by primalAddSol(), SCIPcheckSol(), SCIPprimalTrySol(), SCIPprimalTrySolFree(), and solveNodeLP().

SCIPsolRound()

SCIP_RETCODE SCIPsolRound	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PROB *	prob,
		SCIP_TREE *	tree,
		SCIP_Bool *	success
	)

try to round given solution

Parameters

sol	primal solution
set	global SCIP settings
stat	problem statistics data
prob	transformed problem data
tree	branch and bound tree
success	pointer to store whether rounding was successful

Definition at line 1768 of file sol.c.

References SCIP_Sol::lpcount, SCIP_Stat::lpcount, SCIP_Prob::nbinvars, SCIP_Prob::nintvars, NULL, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_SOLORIGIN_LPSOL, SCIP_UNKNOWN, SCIP_VARSTATUS_COLUMN, SCIP_VARSTATUS_LOOSE, SCIPboolarrayGetVal(), SCIPsetFeasCeil(), SCIPsetFeasFloor(), SCIPsetIsFeasIntegral(), SCIPsolIsOriginal(), SCIPsolSetVal(), SCIPvarGetIndex(), SCIPvarGetStatus(), SCIPvarGetUnchangedObj(), SCIPvarMayRoundDown(), SCIPvarMayRoundUp(), solGetArrayVal(), SCIP_Sol::solorigin, SCIP_Prob::transformed, SCIP_Sol::valid, and SCIP_Prob::vars.

Referenced by SCIProundSol().

SCIPsolUpdateVarsum()

void SCIPsolUpdateVarsum	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PROB *	prob,
		SCIP_Real	weight
	)

updates the solution value sums in variables by adding the value in the given solution

Parameters

sol	primal CIP solution
set	global SCIP settings
stat	problem statistics data
prob	transformed problem data
weight	weight of solution in weighted average

Definition at line 1840 of file sol.c.

References NULL, SCIP_Prob::nvars, SCIP_Var::primsolavg, SCIP_Real, SCIP_UNKNOWN, SCIPsolGetVal(), SCIPsolIsOriginal(), and SCIP_Prob::vars.

Referenced by primalAddSol().

SCIPsolRetransform()

SCIP_RETCODE SCIPsolRetransform	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PROB *	origprob,
		SCIP_PROB *	transprob,
		SCIP_Bool *	hasinfval
	)

retransforms solution to original problem space

Parameters

sol	primal CIP solution
set	global SCIP settings
stat	problem statistics data
origprob	original problem
transprob	transformed problem
hasinfval	pointer to store whether the solution has infinite values

Definition at line 1868 of file sol.c.

References FALSE, NULL, SCIP_Prob::nvars, SCIP_Sol::obj, SCIP_Prob::objoffset, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_SOLORIGIN_ORIGINAL, SCIP_SOLORIGIN_ZERO, SCIP_UNKNOWN, SCIPsetAllocBufferArray, SCIPsetFreeBufferArray, SCIPsetInfinity(), SCIPsetIsInfinity(), SCIPsetIsZero(), SCIPsolGetVal(), SCIPvarGetActiveRepresentatives(), SCIPvarGetObj(), SCIPvarGetProbindex(), SCIPvarGetUnchangedObj(), solClearArrays(), SCIP_Sol::solorigin, solSetArrayVal(), SCIP_Prob::transformed, TRUE, and SCIP_Prob::vars.

Referenced by freeTransform(), SCIPaddSol(), SCIPaddSolFree(), SCIPprimalRetransformSolutions(), SCIPretransformSol(), SCIPsolve(), SCIPtrySol(), and SCIPtrySolFree().

SCIPsolRecomputeObj()

void SCIPsolRecomputeObj	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PROB *	origprob
	)

recomputes the objective value of an original solution, e.g., when transferring solutions from the solution pool (objective coefficients might have changed in the meantime)

Parameters

sol	primal CIP solution
set	global SCIP settings
stat	problem statistics data
origprob	original problem

Definition at line 1995 of file sol.c.

References NULL, SCIP_Prob::nvars, SCIP_Sol::obj, SCIP_Real, SCIP_UNKNOWN, SCIPprobGetObjoffset(), SCIPsetInfinity(), SCIPsetIsInfinity(), SCIPsetIsZero(), SCIPsolGetVal(), SCIPsolIsOriginal(), SCIPvarGetUnchangedObj(), and SCIP_Prob::vars.

Referenced by SCIPrecomputeSolObj(), and SCIPtransformProb().

SCIPsolsAreEqual()

SCIP_Bool SCIPsolsAreEqual	(	SCIP_SOL *	sol1,
		SCIP_SOL *	sol2,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PROB *	origprob,
		SCIP_PROB *	transprob
	)

returns whether the given solutions are equal

Parameters

sol1	first primal CIP solution
sol2	second primal CIP solution
set	global SCIP settings
stat	problem statistics data
origprob	original problem
transprob	transformed problem after presolve, or NULL if both solution are defined in the original problem space

Definition at line 2030 of file sol.c.

References FALSE, NULL, SCIP_Prob::nvars, SCIP_Sol::obj, SCIP_Bool, SCIP_Real, SCIPsetIsEQ(), SCIPsetIsInfinity(), SCIPsolGetObj(), SCIPsolGetVal(), SCIPsolIsOriginal(), TRUE, and SCIP_Prob::vars.

Referenced by primalExistsOrigSol(), primalExistsSol(), and SCIPareSolsEqual().

SCIPsolPrint()

SCIP_RETCODE SCIPsolPrint	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_MESSAGEHDLR *	messagehdlr,
		SCIP_STAT *	stat,
		SCIP_PROB *	prob,
		SCIP_PROB *	transprob,
		FILE *	file,
		SCIP_Bool	mipstart,
		SCIP_Bool	printzeros
	)

outputs non-zero elements of solution to file stream

Parameters

sol	primal CIP solution
set	global SCIP settings
messagehdlr	message handler
stat	problem statistics data
prob	problem data (original or transformed)
transprob	transformed problem data or NULL (to display priced variables)
file	output file (or NULL for standard output)
mipstart	should only discrete variables be printed?
printzeros	should variables set to zero be printed?

Definition at line 2095 of file sol.c.

References SCIP_Prob::fixedvars, SCIP_Prob::nfixedvars, NULL, SCIP_Prob::nvars, SCIP_OKAY, SCIP_Real, SCIP_SOLORIGIN_PARTIAL, SCIP_UNKNOWN, SCIPmessageFPrintInfo(), SCIPsetIsInfinity(), SCIPsetIsZero(), SCIPsolGetVal(), SCIPsolIsOriginal(), SCIPsolIsPartial(), SCIPvarGetName(), SCIPvarGetUnchangedObj(), SCIPvarIsIntegral(), SCIPvarIsTransformedOrigvar(), SCIP_Sol::solorigin, SCIP_Prob::transformed, and SCIP_Prob::vars.

Referenced by primalAddSol(), SCIPprintMIPStart(), SCIPprintSol(), SCIPprintTransSol(), and SCIPsolve().

SCIPsolPrintRay()

SCIP_RETCODE SCIPsolPrintRay	(	SCIP_SOL *	sol,
		SCIP_SET *	set,
		SCIP_MESSAGEHDLR *	messagehdlr,
		SCIP_STAT *	stat,
		SCIP_PROB *	prob,
		SCIP_PROB *	transprob,
		FILE *	file,
		SCIP_Bool	printzeros
	)

outputs non-zero elements of solution representing a ray to file stream

Parameters

sol	primal CIP solution
set	global SCIP settings
messagehdlr	message handler
stat	problem statistics data
prob	problem data (original or transformed)
transprob	transformed problem data or NULL (to display priced variables)
file	output file (or NULL for standard output)
printzeros	should variables set to zero be printed?

Definition at line 2231 of file sol.c.

References SCIP_Prob::fixedvars, SCIP_Prob::nfixedvars, NULL, SCIP_Prob::nvars, SCIP_OKAY, SCIP_Real, SCIP_UNKNOWN, SCIPmessageFPrintInfo(), SCIPsetIsInfinity(), SCIPsetIsZero(), SCIPsolGetRayVal(), SCIPsolIsOriginal(), SCIPvarGetName(), SCIPvarGetUnchangedObj(), SCIPvarIsTransformedOrigvar(), SCIP_Prob::transformed, and SCIP_Prob::vars.

Referenced by SCIPprintRay().

SCIPsolResetViolations()

void SCIPsolResetViolations

(

SCIP_SOL *

sol

)

reset violations of a solution

Parameters

sol	primal CIP solution

Definition at line 2343 of file sol.c.

References SCIP_Viol::absviolbounds, SCIP_Viol::absviolcons, SCIP_Viol::absviolintegrality, SCIP_Viol::absviollprows, NULL, SCIP_Viol::relviolbounds, SCIP_Viol::relviolcons, SCIP_Viol::relviollprows, and SCIP_Sol::viol.

Referenced by checkSolOrig(), SCIPsolCheck(), SCIPsolCreate(), SCIPsolCreateOriginal(), SCIPsolCreatePartial(), and SCIPsolCreateUnknown().

SCIPsolUpdateIntegralityViolation()

void SCIPsolUpdateIntegralityViolation	(	SCIP_SOL *	sol,
		SCIP_Real	absviolintegrality
	)

update integrality violation of a solution

Parameters

sol	primal CIP solution
absviolintegrality	absolute violation of integrality

Definition at line 2359 of file sol.c.

References SCIP_Viol::absviolintegrality, MAX, NULL, and SCIP_Sol::viol.

Referenced by SCIPupdateSolIntegralityViolation().

SCIPsolUpdateBoundViolation()

void SCIPsolUpdateBoundViolation	(	SCIP_SOL *	sol,
		SCIP_Real	absviolbounds,
		SCIP_Real	relviolbounds
	)

update bound violation of a solution

Parameters

sol	primal CIP solution
absviolbounds	absolute violation of bounds
relviolbounds	relative violation of bounds

Definition at line 2370 of file sol.c.

References SCIP_Viol::absviolbounds, MAX, NULL, SCIP_Viol::relviolbounds, and SCIP_Sol::viol.

Referenced by SCIPupdateSolBoundViolation().

SCIPsolUpdateLPRowViolation()

void SCIPsolUpdateLPRowViolation	(	SCIP_SOL *	sol,
		SCIP_Real	absviollprows,
		SCIP_Real	relviollprows
	)

update LP row violation of a solution

Parameters

sol	primal CIP solution
absviollprows	absolute violation of LP rows
relviollprows	relative violation of LP rows

Definition at line 2383 of file sol.c.

References SCIP_Viol::absviollprows, MAX, NULL, SCIP_Viol::relviollprows, and SCIP_Sol::viol.

Referenced by SCIPsolUpdateLPConsViolation(), and SCIPupdateSolLPRowViolation().

SCIPsolUpdateConsViolation()

void SCIPsolUpdateConsViolation	(	SCIP_SOL *	sol,
		SCIP_Real	absviolcons,
		SCIP_Real	relviolcons
	)

update constraint violation of a solution

Parameters

sol	primal CIP solution
absviolcons	absolute violation of constraint
relviolcons	relative violation of constraint

Definition at line 2396 of file sol.c.

References SCIP_Viol::absviolcons, MAX, NULL, SCIP_Viol::relviolcons, and SCIP_Sol::viol.

Referenced by SCIPsolUpdateLPConsViolation(), and SCIPupdateSolConsViolation().

SCIPsolUpdateLPConsViolation()

void SCIPsolUpdateLPConsViolation	(	SCIP_SOL *	sol,
		SCIP_Real	absviol,
		SCIP_Real	relviol
	)

update violation of a constraint that is represented in the LP

Parameters

sol	primal CIP solution
absviol	absolute violation of constraint
relviol	relative violation of constraint

Definition at line 2409 of file sol.c.

References NULL, SCIPsolUpdateConsViolation(), and SCIPsolUpdateLPRowViolation().

Referenced by SCIPupdateSolLPConsViolation().

SCIPsolOrigAddObjval()

void SCIPsolOrigAddObjval	(	SCIP_SOL *	sol,
		SCIP_Real	addval
	)

adds value to the objective value of a given original primal CIP solution

Parameters

sol	primal CIP solution
addval	offset value to add

Definition at line 2561 of file sol.c.

References NULL, SCIP_Sol::obj, SCIP_SOLORIGIN_ORIGINAL, and SCIP_Sol::solorigin.

Referenced by SCIPprimalAddOrigObjoffset().

SCIPsolGetPrimalIndex()

int SCIPsolGetPrimalIndex

(

SCIP_SOL *

sol

)

gets current position of solution in array of existing solutions of primal data

Parameters

sol	primal CIP solution

Definition at line 2623 of file sol.c.

References NULL, and SCIP_Sol::primalindex.

Referenced by SCIPprimalSolCreated(), and SCIPprimalSolFreed().

SCIPsolSetPrimalIndex()

void SCIPsolSetPrimalIndex	(	SCIP_SOL *	sol,
		int	primalindex
	)

sets current position of solution in array of existing solutions of primal data

Parameters

sol	primal CIP solution
primalindex	new primal index of solution

Definition at line 2633 of file sol.c.

References NULL, and SCIP_Sol::primalindex.

Referenced by SCIPprimalSolCreated(), and SCIPprimalSolFreed().