Detailed Description
miscellaneous methods for linear constraints
Definition in file misc_linear.c.
#include <assert.h>
#include <string.h>
#include "scip/def.h"
#include "scip/scip.h"
#include "scip/pub_misc_linear.h"
#include "scip/cons_setppc.h"
#include "scip/scipdefplugins.h"
Go to the source code of this file.
Functions | |
SCIP_Real | SCIPconsGetRhs (SCIP *scip, SCIP_CONS *cons, SCIP_Bool *success) |
SCIP_Real | SCIPconsGetLhs (SCIP *scip, SCIP_CONS *cons, SCIP_Bool *success) |
SCIP_RETCODE | SCIPgetConsVals (SCIP *scip, SCIP_CONS *cons, SCIP_Real *vals, int varssize, SCIP_Bool *success) |
void | SCIPconsGetDualfarkas (SCIP *scip, SCIP_CONS *cons, SCIP_Real *dualfarkas, SCIP_Bool *success) |
void | SCIPconsGetDualsol (SCIP *scip, SCIP_CONS *cons, SCIP_Real *dualsol, SCIP_Bool *success) |
SCIP_ROW * | SCIPconsGetRow (SCIP *scip, SCIP_CONS *cons) |
SCIP_RETCODE | SCIPconsAddCoef (SCIP *scip, SCIP_CONS *cons, SCIP_VAR *var, SCIP_Real val) |
Function Documentation
◆ SCIPconsGetRhs()
returns the right-hand side of an arbitrary SCIP constraint that can be represented as a single linear constraint
- Note
- The success pointer indicates if the individual contraint handler was able to return the involved values
- Parameters
-
scip SCIP data structure cons constraint for which right-hand side is queried success pointer to store whether a valid right-hand side was returned
Definition at line 48 of file misc_linear.c.
References FALSE, NULL, SCIP_INVALID, SCIP_Real, SCIP_SETPPCTYPE_COVERING, SCIP_SETPPCTYPE_PACKING, SCIP_SETPPCTYPE_PARTITIONING, SCIPconsGetHdlr(), SCIPconshdlrGetName(), SCIPgetCapacityKnapsack(), SCIPgetRhsLinear(), SCIPgetRhsVarbound(), SCIPgetTypeSetppc(), SCIPinfinity(), SCIPwarningMessage(), and TRUE.
Referenced by addSlackVars(), createBlockproblem(), and initCurrent().
◆ SCIPconsGetLhs()
returns the left-hand side of an arbitrary SCIP constraint that can be represented as a single linear constraint
- Note
- The success pointer indicates if the individual contraint handler was able to return the involved values
- Parameters
-
scip SCIP data structure cons constraint to get left-hand side for success pointer to store whether a valid left-hand side was returned
Definition at line 112 of file misc_linear.c.
References FALSE, NULL, SCIP_INVALID, SCIP_Real, SCIP_SETPPCTYPE_COVERING, SCIP_SETPPCTYPE_PACKING, SCIP_SETPPCTYPE_PARTITIONING, SCIPconsGetHdlr(), SCIPconshdlrGetName(), SCIPgetLhsLinear(), SCIPgetLhsVarbound(), SCIPgetTypeSetppc(), SCIPinfinity(), SCIPwarningMessage(), and TRUE.
Referenced by addSlackVars(), createBlockproblem(), and initCurrent().
◆ SCIPgetConsVals()
SCIP_RETCODE SCIPgetConsVals | ( | SCIP * | scip, |
SCIP_CONS * | cons, | ||
SCIP_Real * | vals, | ||
int | varssize, | ||
SCIP_Bool * | success | ||
) |
returns the value array of an arbitrary SCIP constraint that can be represented as a single linear constraint
- Returns
- SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See SCIP_RETCODE for a complete list of error codes.
- Note
- The success pointer indicates if the individual contraint handler was able to return the involved values
- Parameters
-
scip SCIP data structure cons constraint for which the coefficients are wanted vals array to store the coefficients of the constraint varssize available slots in vals array needed to check if the array is large enough success pointer to store whether the coefficients are successfully copied
Definition at line 179 of file misc_linear.c.
References FALSE, NULL, SCIP_CALL, SCIP_Longint, SCIP_OKAY, SCIP_Real, SCIPconsGetHdlr(), SCIPconshdlrGetName(), SCIPgetConsNVars(), SCIPgetValsLinear(), SCIPgetVbdcoefVarbound(), SCIPgetWeightsKnapsack(), SCIPgetWeightsSOS1(), SCIPgetWeightsSOS2(), SCIPwarningMessage(), and TRUE.
Referenced by createBlockproblem(), and roundPartition().
◆ SCIPconsGetDualfarkas()
void SCIPconsGetDualfarkas | ( | SCIP * | scip, |
SCIP_CONS * | cons, | ||
SCIP_Real * | dualfarkas, | ||
SCIP_Bool * | success | ||
) |
returns the dual farkas sol of an arbitrary SCIP constraint that can be represented as a single linear constraint
- Note
- The success pointer indicates if the individual contraint handler was able to return the dual farkas solution
- Parameters
-
scip SCIP data structure cons constraint to get the dual farkas solution for dualfarkas pointer to store the dual farkas solution success pointer to store whether the dual farkas solution is successfully returned
Definition at line 301 of file misc_linear.c.
References FALSE, NULL, SCIPconsGetHdlr(), SCIPconshdlrGetName(), SCIPgetDualfarkasKnapsack(), SCIPgetDualfarkasLinear(), SCIPgetDualfarkasLogicor(), SCIPgetDualfarkasSetppc(), SCIPgetDualfarkasVarbound(), SCIPwarningMessage(), and TRUE.
◆ SCIPconsGetDualsol()
returns the dual sol of an arbitrary SCIP constraint that can be represented as a single linear constraint
- Note
- The success pointer indicates if the individual contraint handler was able to return the dual solution
- Parameters
-
scip SCIP data structure cons constraint to get the dual solution for dualsol pointer to store the dual solution success pointer to store whether the dual solution is successfully returned
Definition at line 357 of file misc_linear.c.
References FALSE, NULL, SCIPconsGetHdlr(), SCIPconshdlrGetName(), SCIPgetDualsolKnapsack(), SCIPgetDualsolLinear(), SCIPgetDualsolLogicor(), SCIPgetDualsolSetppc(), SCIPgetDualsolVarbound(), SCIPwarningMessage(), and TRUE.
◆ SCIPconsGetRow()
returns the row of an arbitrary SCIP constraint that can be represented as a single linear constraint or NULL of no row is awailable
- Parameters
-
scip SCIP data structure cons constraint for which row is queried
Definition at line 412 of file misc_linear.c.
References NULL, SCIPconsGetHdlr(), SCIPconshdlrGetName(), SCIPgetRowKnapsack(), SCIPgetRowLinear(), SCIPgetRowLogicor(), SCIPgetRowSetppc(), and SCIPgetRowVarbound().
Referenced by getOriginalRows().
◆ SCIPconsAddCoef()
SCIP_RETCODE SCIPconsAddCoef | ( | SCIP * | scip, |
SCIP_CONS * | cons, | ||
SCIP_VAR * | var, | ||
SCIP_Real | val | ||
) |
adds the given variable to the input constraint. If the constraint is setppc or logicor the value is ignored. If the constraint is knapsack, then the value is converted to an int. A warning is passed if the SCIP_Real is not an integer. TODO: Allow val to be a pointer.
- Parameters
-
scip SCIP data structure cons constraint for which row is queried var variable of the constraint entry val the coefficient of the constraint entry
Definition at line 456 of file misc_linear.c.
References NULL, SCIP_CALL, SCIP_ERROR, SCIP_Longint, SCIP_OKAY, SCIPaddCoefKnapsack(), SCIPaddCoefLinear(), SCIPaddCoefLogicor(), SCIPaddCoefSetppc(), SCIPconsGetHdlr(), SCIPconshdlrGetName(), SCIPerrorMessage, and SCIPisIntegral().
Referenced by addSlackVars().