Scippy

SCIP

Solving Constraint Integer Programs

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_HEURSCIPsolGetHeur (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_RELAXSCIPsolGetRelax (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
solprimal 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
solprimal CIP solution
setglobal SCIP settings
varproblem variable
valvalue 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
solprimal CIP solution
setglobal SCIP settings
varproblem variable
incvalincrease 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()

◆ solUnlinkVar()

◆ 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
solprimal CIP solution
statproblem statistics data
treebranch and bound tree, or NULL
checktimeshould 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
solpointer to primal CIP solution
blkmemblock memory
setglobal SCIP settings
statproblem statistics data
primalprimal data
treebranch and bound tree
heurheuristic 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
solpointer to primal CIP solution
blkmemblock memory
setglobal SCIP settings
statproblem statistics data
origproboriginal problem data
primalprimal data
treebranch and bound tree
heurheuristic 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()

◆ 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
solprimal CIP solution to change, living in original space
transsolpointer to corresponding transformed primal CIP solution
blkmemblock memory
setglobal SCIP settings
primalprimal 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
solprimal CIP solution
setglobal SCIP settings
statproblem statistics data
probeither original or transformed problem, depending on sol origin
treebranch and bound tree
uselprowsshould 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
solpointer to primal CIP solution
blkmemblock memory
setglobal SCIP settings
statproblem statistics data
probtransformed problem data
primalprimal data
treebranch and bound tree
lpcurrent LP data
heurheuristic 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
solpointer to primal CIP solution
blkmemblock memory
setglobal SCIP settings
statproblem statistics data
primalprimal data
treebranch and bound tree
nlpcurrent NLP data
heurheuristic 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
solpointer to primal CIP solution
blkmemblock memory
setglobal SCIP settings
statproblem statistics data
primalprimal data
treebranch and bound tree
relaxationglobal relaxation data
heurheuristic 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
solpointer to primal CIP solution
blkmemblock memory
setglobal SCIP settings
statproblem statistics data
probtransformed problem data
primalprimal data
treebranch and bound tree, or NULL
lpcurrent LP data
heurheuristic 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
solpointer to primal CIP solution
blkmemblock memory
setglobal SCIP settings
statproblem statistics data
probtransformed problem data
primalprimal data
treebranch and bound tree
lpcurrent LP data
heurheuristic 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
solpointer to primal CIP solution
blkmemblock memory
setglobal SCIP settings
statproblem statistics data
primalprimal data
heurheuristic 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
solpointer to primal CIP solution
blkmemblock memory
setglobal SCIP settings
statproblem statistics data
primalprimal data
treebranch and bound tree
heurheuristic 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()

◆ 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
solprimal CIP solution
setglobal SCIP settings
statproblem statistics data
probtransformed problem data
treebranch and bound tree
lpcurrent 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
solprimal CIP solution
statproblem statistics data
treebranch and bound tree
nlpcurrent 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
solprimal CIP solution
setglobal SCIP settings
statproblem statistics data
treebranch and bound tree
relaxationglobal 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
solprimal CIP solution
setglobal SCIP settings
statproblem statistics data
probtransformed problem data
treebranch and bound tree, or NULL
lpcurrent 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
solprimal CIP solution
setglobal SCIP settings
statproblem statistics data
probtransformed problem data
treebranch and bound tree
lpcurrent 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
solprimal CIP solution
statproblem statistics data
treebranch 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
solprimal CIP solution
statproblem statistics data
treebranch 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
solprimal CIP solution
setglobal SCIP settings
probtransformed 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(), 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
solprimal CIP solution
setglobal SCIP settings
statproblem statistics data
treebranch and bound tree, or NULL
varvariable to add to solution
valsolution value of variable

Definition at line 1077 of file sol.c.

References FALSE, SCIP_Stat::lpcount, MAX, SCIP_Stat::nnodes, SCIP_Sol::nodenum, SCIP_Stat::nruns, NULL, SCIP_Sol::runnum, SCIP_CALL, SCIP_INVALID, 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()

◆ 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
solprimal CIP solution
setglobal SCIP settings
statproblem statistics data
varvariable to get value for

Definition at line 1372 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()

◆ SCIPsolGetObj()

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

◆ 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
solprimal CIP solution
varproblem variable
oldobjold objective value
newobjnew objective value

Definition at line 1588 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
solprimal CIP solution
setglobal SCIP settings
statproblem statistics
varsproblem variables
nvarsnumber of problem variables

Definition at line 1607 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
solprimal CIP solution
setglobal SCIP settings
messagehdlrmessage handler
blkmemblock memory
statproblem statistics
probtransformed problem data
printreasonShould all reasons of violations be printed?
completelyShould all violations be checked?
checkboundsShould the bounds of the variables be checked?
checkintegralityHas integrality to be checked?
checklprowsDo constraints represented by rows in the current LP have to be checked?
feasiblestores whether solution is feasible

Definition at line 1672 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
solprimal solution
setglobal SCIP settings
statproblem statistics data
probtransformed problem data
treebranch and bound tree
successpointer to store whether rounding was successful

Definition at line 1793 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
solprimal CIP solution
setglobal SCIP settings
statproblem statistics data
probtransformed problem data
weightweight of solution in weighted average

Definition at line 1865 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
solprimal CIP solution
setglobal SCIP settings
statproblem statistics data
origproboriginal problem
transprobtransformed problem
hasinfvalpointer to store whether the solution has infinite values

Definition at line 1893 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(), SCIPsolGetVal(), SCIPvarGetActiveRepresentatives(), SCIPvarGetObj(), SCIPvarGetProbindex(), SCIPvarGetUnchangedObj(), solClearArrays(), SCIP_Sol::solorigin, solSetArrayVal(), SCIP_Prob::transformed, TRUE, and SCIP_Prob::vars.

Referenced by freeTransform(), primalAddSol(), SCIPprimalRetransformSolutions(), SCIPretransformSol(), and SCIPsolve().

◆ 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
solprimal CIP solution
setglobal SCIP settings
statproblem statistics data
origproboriginal problem

Definition at line 2020 of file sol.c.

References NULL, SCIP_Prob::nvars, SCIP_Sol::obj, SCIP_Real, SCIP_UNKNOWN, SCIPprobGetObjoffset(), SCIPsetInfinity(), SCIPsetIsInfinity(), 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
sol1first primal CIP solution
sol2second primal CIP solution
setglobal SCIP settings
statproblem statistics data
origproboriginal problem
transprobtransformed problem after presolve, or NULL if both solution are defined in the original problem space

Definition at line 2055 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
solprimal CIP solution
setglobal SCIP settings
messagehdlrmessage handler
statproblem statistics data
probproblem data (original or transformed)
transprobtransformed problem data or NULL (to display priced variables)
fileoutput file (or NULL for standard output)
mipstartshould only discrete variables be printed?
printzerosshould variables set to zero be printed?

Definition at line 2120 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
solprimal CIP solution
setglobal SCIP settings
messagehdlrmessage handler
statproblem statistics data
probproblem data (original or transformed)
transprobtransformed problem data or NULL (to display priced variables)
fileoutput file (or NULL for standard output)
printzerosshould variables set to zero be printed?

Definition at line 2256 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()

◆ SCIPsolUpdateIntegralityViolation()

void SCIPsolUpdateIntegralityViolation ( SCIP_SOL sol,
SCIP_Real  absviolintegrality 
)

update integrality violation of a solution

Parameters
solprimal CIP solution
absviolintegralityabsolute violation of integrality

Definition at line 2384 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
solprimal CIP solution
absviolboundsabsolute violation of bounds
relviolboundsrelative violation of bounds

Definition at line 2395 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
solprimal CIP solution
absviollprowsabsolute violation of LP rows
relviollprowsrelative violation of LP rows

Definition at line 2408 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
solprimal CIP solution
absviolconsabsolute violation of constraint
relviolconsrelative violation of constraint

Definition at line 2421 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
solprimal CIP solution
absviolabsolute violation of constraint
relviolrelative violation of constraint

Definition at line 2434 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
solprimal CIP solution
addvaloffset value to add

Definition at line 2586 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
solprimal CIP solution

Definition at line 2648 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
solprimal CIP solution
primalindexnew primal index of solution

Definition at line 2658 of file sol.c.

References NULL, and SCIP_Sol::primalindex.

Referenced by SCIPprimalSolCreated(), and SCIPprimalSolFreed().