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

Functions
SCIP_EXPORT SCIP_RETCODE	SCIPincludeConshdlrSavesdpsol (SCIP *scip)

SCIP_EXPORT 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)

SCIP_EXPORT SCIP_Longint	SCIPconsSavesdpsolGetNodeIndex (SCIP scip, SCIP_CONS cons)

SCIP_EXPORT SCIP_SOL *	SCIPconsSavesdpsolGetDualVector (SCIP scip, SCIP_CONS cons)

SCIP_EXPORT SCIP_Real	SCIPconsSavesdpsolGetMaxPrimalEntry (SCIP scip, SCIP_CONS cons)

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

SCIP_EXPORT 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

SCIP_EXPORT SCIP_RETCODE SCIPincludeConshdlrSavesdpsol ( SCIP * scip )

include Savesdpsol constraint handler

Parameters

scip	SCIP data structure

Definition at line 210 of file cons_savesdpsol.c.

References CONSHDLR_CHECKPRIORITY, CONSHDLR_DESC, CONSHDLR_EAGERFREQ, CONSHDLR_ENFOPRIORITY, CONSHDLR_NAME, CONSHDLR_NEEDSCONS, and createConsSavesdpsol().

Referenced by SCIP_DECL_CONSCOPY(), SCIP_DECL_CONSHDLRCOPY(), and SCIPSDPincludeDefaultPlugins().

SCIP_EXPORT 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 238 of file cons_savesdpsol.c.

References name, and SCIPconsSavesdpsolGetNodeIndex().

Referenced by calcRelax(), and SCIPincludeConshdlrSavesdpsol().

SCIP_EXPORT 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 317 of file cons_savesdpsol.c.

References SCIPconsSavesdpsolGetDualVector().

Referenced by calcRelax(), and createConsSavesdpsol().

SCIP_EXPORT 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 335 of file cons_savesdpsol.c.

References SCIPconsSavesdpsolGetMaxPrimalEntry().

Referenced by calcRelax(), and SCIPconsSavesdpsolGetNodeIndex().

SCIP_EXPORT 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 353 of file cons_savesdpsol.c.

References SCIPconsSavesdpsolGetPrimalMatrixNonzeros().

Referenced by calcRelax(), and SCIPconsSavesdpsolGetDualVector().

SCIP_EXPORT 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 371 of file cons_savesdpsol.c.

References SCIPconsSavesdpsolGetPrimalMatrix().

Referenced by calcRelax(), and SCIPconsSavesdpsolGetMaxPrimalEntry().

SCIP_EXPORT 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 402 of file cons_savesdpsol.c.

Referenced by calcRelax(), and SCIPconsSavesdpsolGetPrimalMatrixNonzeros().

Functions

Detailed Description

Function Documentation