cons_savesdpsol.h File Reference

constraint handler for saving SDP solutions in nodes More...

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Functions
EXTERN SCIP_RETCODE	SCIPincludeConshdlrSavesdpsol (SCIP *scip)
EXTERN SCIP_RETCODE	createConsSavesdpsol (SCIP *scip, SCIP_CONS **cons, const char *name, SCIP_Longint node, SCIP_SOL *sol, SCIP_Real maxprimalentry, int nblocks, int *startXnblocknonz, int **startXrow, int **startXcol, SCIP_Real **startXval)
EXTERN SCIP_Longint	SCIPconsSavesdpsolGetNodeIndex (SCIP *scip, SCIP_CONS *cons)
EXTERN SCIP_SOL *	SCIPconsSavesdpsolGetDualVector (SCIP *scip, SCIP_CONS *cons)
EXTERN SCIP_Real	SCIPconsSavesdpsolGetMaxPrimalEntry (SCIP *scip, SCIP_CONS *cons)
EXTERN SCIP_RETCODE	SCIPconsSavesdpsolGetPrimalMatrixNonzeros (SCIP *scip, SCIP_CONS *cons, int nblocks, int *startXnblocknonz)
EXTERN SCIP_RETCODE	SCIPconsSavesdpsolGetPrimalMatrix (SCIP *scip, SCIP_CONS *cons, int nblocks, int *startXnblocknonz, int **startXrow, int **startXcol, SCIP_Real **startXval)

Detailed Description

constraint handler for saving SDP solutions in nodes

Author

Sonja Mars

Lars Schewe

Tristan Gally

Definition in file cons_savesdpsol.h.

Function Documentation

EXTERN SCIP_RETCODE SCIPincludeConshdlrSavesdpsol

(

SCIP *

scip

)

include Savesdpsol constraint handler

Parameters

scip	SCIP data structure

Definition at line 211 of file cons_savesdpsol.c.

References CONSHDLR_CHECKPRIORITY, CONSHDLR_DESC, CONSHDLR_EAGERFREQ, CONSHDLR_ENFOPRIORITY, CONSHDLR_NAME, and CONSHDLR_NEEDSCONS.

Referenced by runSCIP(), and SCIP_DECL_CONSHDLRCOPY().

EXTERN SCIP_RETCODE createConsSavesdpsol	(	SCIP *	scip,
		SCIP_CONS **	cons,
		const char *	name,
		SCIP_Longint	node,
		SCIP_SOL *	sol,
		SCIP_Real	maxprimalentry,
		int	nblocks,
		int *	startXnblocknonz,
		int **	startXrow,
		int **	startXcol,
		SCIP_Real **	startXval
	)

create a Savesdpsol-Cons, i.e. save the current optimal solution for the SDP-relaxation of this node

Parameters

scip	SCIP data structure
cons	pointer to hold the created constraint
name	name of constraint
node	index of the node the solution belongs to
sol	optimal solution for SDP-relaxation of this node
maxprimalentry	maximum absolute value of primal matrix
nblocks	number of blocks INCLUDING lp-block
startXnblocknonz	primal matrix X as starting point for the solver: number of nonzeros for each block, also length of corresponding row/col/val-arrays; or NULL if nblocks = 0
startXrow	primal matrix X as starting point for the solver: row indices for each block; or NULL if nblocks = 0
startXcol	primal matrix X as starting point for the solver: column indices for each block; or NULL if nblocks = 0
startXval	primal matrix X as starting point for the solver: values for each block; or NULL if nblocks = 0

Definition at line 239 of file cons_savesdpsol.c.

Referenced by calcRelax().

EXTERN SCIP_Longint SCIPconsSavesdpsolGetNodeIndex	(	SCIP *	scip,
		SCIP_CONS *	cons
	)

for the given cons of type Savesdpsol returns the node the information belongs to

Parameters

scip	SCIP data structure
cons	constraint to get starting point for

Definition at line 318 of file cons_savesdpsol.c.

Referenced by calcRelax().

EXTERN SCIP_SOL* SCIPconsSavesdpsolGetDualVector	(	SCIP *	scip,
		SCIP_CONS *	cons
	)

for the given cons of type Savesdpsol returns the previous dual solution vector y

Parameters

scip	SCIP data structure
cons	constraint to get starting point for

Definition at line 336 of file cons_savesdpsol.c.

Referenced by calcRelax().

EXTERN SCIP_Real SCIPconsSavesdpsolGetMaxPrimalEntry	(	SCIP *	scip,
		SCIP_CONS *	cons
	)

for the given cons of type Savesdpsol returns the maximum entry of primal solution X

Parameters

scip	SCIP data structure
cons	constraint to get maximum primal entry for

Definition at line 354 of file cons_savesdpsol.c.

Referenced by calcRelax().

EXTERN SCIP_RETCODE SCIPconsSavesdpsolGetPrimalMatrixNonzeros	(	SCIP *	scip,
		SCIP_CONS *	cons,
		int	nblocks,
		int *	startXnblocknonz
	)

for the given cons of type Savesdpsol returns the number of nonzeros for each block of previous primal solution X

Parameters

scip	SCIP data structure
cons	constraint to get maximum primal entry for
nblocks	number of blocks INCLUDING lp-block
startXnblocknonz	input: allocated memory for startXrow/col/val output: length of startXrow/col/val

Definition at line 372 of file cons_savesdpsol.c.

Referenced by calcRelax().

EXTERN SCIP_RETCODE SCIPconsSavesdpsolGetPrimalMatrix	(	SCIP *	scip,
		SCIP_CONS *	cons,
		int	nblocks,
		int *	startXnblocknonz,
		int **	startXrow,
		int **	startXcol,
		SCIP_Real **	startXval
	)

for the given cons of type Savesdpsol returns the previous primal solution X

Parameters

scip	SCIP data structure
cons	constraint to get maximum primal entry for
nblocks	number of blocks INCLUDING lp-block
startXnblocknonz	input: allocated memory for startXrow/col/val output: length of startXrow/col/val
startXrow	pointer to store pointer to row indices of X
startXcol	pointer to store pointer to column indices of X
startXval	pointer to store pointer to values of X

Definition at line 403 of file cons_savesdpsol.c.

Referenced by calcRelax().