SCIP-SDP
2.1.0
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General interface methods for SDP-preprocessing (mainly fixing variables and removing empty rows/cols) More...
Go to the source code of this file.
Macros | |
#define | BMS_CALL(x) |
#define | CHECK_IF_SOLVED(sdpi) |
#define | CHECK_IF_SOLVED_BOOL(sdpi) |
#define | DUPLICATE_ARRAY_NULL(blkmem, target, source, size) |
#define | SCIP_CALL_PARAM(x) |
#define | NINCREASESGAMMA 2 |
#define | MIN_EPSILON 1e-10 |
#define | DEFAULT_SDPSOLVEREPSILON 1e-4 |
#define | DEFAULT_SDPSOLVERFEASTOL 1e-6 |
#define | DEFAULT_PENALTYPARAM 1e+5 |
#define | DEFAULT_MAXPENALTYPARAM 1e+10 |
Functions | |
static void | ensureLowerTriangular (int *i, int *j) |
static SCIP_Bool | isFixed (SCIP_SDPI *sdpi, int v) |
static SCIP_RETCODE | compConstMatAfterFixings (SCIP_SDPI *sdpi, int *sdpconstnnonz, int *sdpconstnblocknonz, int **sdpconstrow, int **sdpconstcol, SCIP_Real **sdpconstval) |
static SCIP_RETCODE | findEmptyRowColsSDP (SCIP_SDPI *sdpi, int *sdpconstnblocknonz, int **sdpconstrow, int **sdpconstcol, SCIP_Real **sdpconstval, int **indchanges, int *nremovedinds, int *blockindchanges, int *nremovedblocks) |
static SCIP_RETCODE | computeLpLhsRhsAfterFixings (SCIP_SDPI *sdpi, int *nactivelpcons, SCIP_Real *lplhsafterfix, SCIP_Real *lprhsafterfix, int *rownactivevars, SCIP_Bool *fixingsfound) |
static SCIP_RETCODE | checkAllFixed (SCIP_SDPI *sdpi) |
static SCIP_RETCODE | checkFixedFeasibilitySdp (SCIP_SDPI *sdpi, int *sdpconstnblocknonz, int **sdpconstrow, int **sdpconstcol, SCIP_Real **sdpconstval, int **indchanges, int *nremovedinds, int *blockindchanges) |
static SCIP_RETCODE | checkSlaterCondition (SCIP_SDPI *sdpi, SCIP_Real timelimit, clock_t starttime, int *sdpconstnblocknonz, int **sdpconstrow, int **sdpconstcol, SCIP_Real **sdpconstval, int **indchanges, int *nremovedinds, SCIP_Real *lplhsafterfix, SCIP_Real *lprhsafterfix, int *rowsnactivevars, int *blockindchanges, int sdpconstnnonz, int nactivelpcons, int nremovedblocks, SCIP_Bool rootnodefailed) |
Miscellaneous Methods | |
const char * | SCIPsdpiGetSolverName (void) |
const char * | SCIPsdpiGetSolverDesc (void) |
void * | SCIPsdpiGetSolverPointer (SCIP_SDPI *sdpi) |
SDPI Creation and Destruction Methods | |
SCIP_RETCODE | SCIPsdpiCreate (SCIP_SDPI **sdpi, SCIP_MESSAGEHDLR *messagehdlr, BMS_BLKMEM *blkmem) |
SCIP_RETCODE | SCIPsdpiFree (SCIP_SDPI **sdpi) |
SCIP_RETCODE | SCIPsdpiClone (SCIP_SDPI *oldsdpi, SCIP_SDPI *newsdpi) |
Modification Methods | |
SCIP_RETCODE | SCIPsdpiLoadSDP (SCIP_SDPI *sdpi, int nvars, SCIP_Real *obj, SCIP_Real *lb, SCIP_Real *ub, int nsdpblocks, int *sdpblocksizes, int *sdpnblockvars, int sdpconstnnonz, int *sdpconstnblocknonz, int **sdpconstrow, int **sdpconstcol, SCIP_Real **sdpconstval, int sdpnnonz, int **sdpnblockvarnonz, int **sdpvar, int ***sdprow, int ***sdpcol, SCIP_Real ***sdpval, int nlpcons, SCIP_Real *lplhs, SCIP_Real *lprhs, int lpnnonz, int *lprow, int *lpcol, SCIP_Real *lpval) |
SCIP_RETCODE | SCIPsdpiAddLPRows (SCIP_SDPI *sdpi, int nrows, const SCIP_Real *lhs, const SCIP_Real *rhs, int nnonz, const int *row, const int *col, const SCIP_Real *val) |
SCIP_RETCODE | SCIPsdpiDelLPRows (SCIP_SDPI *sdpi, int firstrow, int lastrow) |
SCIP_RETCODE | SCIPsdpiDelLPRowset (SCIP_SDPI *sdpi, int *dstat) |
SCIP_RETCODE | SCIPsdpiClear (SCIP_SDPI *sdpi) |
SCIP_RETCODE | SCIPsdpiChgObj (SCIP_SDPI *sdpi, int nvars, const int *ind, const SCIP_Real *obj) |
SCIP_RETCODE | SCIPsdpiChgBounds (SCIP_SDPI *sdpi, int nvars, const int *ind, const SCIP_Real *lb, const SCIP_Real *ub) |
SCIP_RETCODE | SCIPsdpiChgLPLhRhSides (SCIP_SDPI *sdpi, int nrows, const int *ind, const SCIP_Real *lhs, const SCIP_Real *rhs) |
Data Accessing Methods | |
SCIP_RETCODE | SCIPsdpiGetNLPRows (SCIP_SDPI *sdpi, int *nlprows) |
SCIP_RETCODE | SCIPsdpiGetNSDPBlocks (SCIP_SDPI *sdpi, int *nsdpblocks) |
SCIP_RETCODE | SCIPsdpiGetNVars (SCIP_SDPI *sdpi, int *nvars) |
SCIP_RETCODE | SCIPsdpiGetSDPNNonz (SCIP_SDPI *sdpi, int *nnonz) |
SCIP_RETCODE | SCIPsdpiGetConstNNonz (SCIP_SDPI *sdpi, int *nnonz) |
SCIP_RETCODE | SCIPsdpiGetLPNNonz (SCIP_SDPI *sdpi, int *nnonz) |
SCIP_RETCODE | SCIPsdpiGetObj (SCIP_SDPI *sdpi, int firstvar, int lastvar, SCIP_Real *vals) |
SCIP_RETCODE | SCIPsdpiGetBounds (SCIP_SDPI *sdpi, int firstvar, int lastvar, SCIP_Real *lbs, SCIP_Real *ubs) |
SCIP_RETCODE | SCIPsdpiGetLhSides (SCIP_SDPI *sdpi, int firstrow, int lastrow, SCIP_Real *lhss) |
SCIP_RETCODE | SCIPsdpiGetRhSides (SCIP_SDPI *sdpi, int firstrow, int lastrow, SCIP_Real *rhss) |
Solving Methods | |
SCIP_RETCODE | SCIPsdpiSolve (SCIP_SDPI *sdpi, SCIP_Real *start, SCIP_SDPSOLVERSETTING startsettings, SCIP_Bool enforceslatercheck, SCIP_Real timelimit) |
Solution Information Methods | |
SCIP_Bool | SCIPsdpiWasSolved (SCIP_SDPI *sdpi) |
SCIP_Bool | SCIPsdpiSolvedOrig (SCIP_SDPI *sdpi) |
SCIP_Bool | SCIPsdpiFeasibilityKnown (SCIP_SDPI *sdpi) |
SCIP_RETCODE | SCIPsdpiGetSolFeasibility (SCIP_SDPI *sdpi, SCIP_Bool *primalfeasible, SCIP_Bool *dualfeasible) |
SCIP_Bool | SCIPsdpiIsPrimalUnbounded (SCIP_SDPI *sdpi) |
SCIP_Bool | SCIPsdpiIsPrimalInfeasible (SCIP_SDPI *sdpi) |
SCIP_Bool | SCIPsdpiIsPrimalFeasible (SCIP_SDPI *sdpi) |
SCIP_Bool | SCIPsdpiIsDualUnbounded (SCIP_SDPI *sdpi) |
SCIP_Bool | SCIPsdpiIsDualInfeasible (SCIP_SDPI *sdpi) |
SCIP_Bool | SCIPsdpiIsDualFeasible (SCIP_SDPI *sdpi) |
SCIP_Bool | SCIPsdpiIsConverged (SCIP_SDPI *sdpi) |
SCIP_Bool | SCIPsdpiIsObjlimExc (SCIP_SDPI *sdpi) |
SCIP_Bool | SCIPsdpiIsIterlimExc (SCIP_SDPI *sdpi) |
SCIP_Bool | SCIPsdpiIsTimelimExc (SCIP_SDPI *sdpi) |
int | SCIPsdpiGetInternalStatus (SCIP_SDPI *sdpi) |
SCIP_Bool | SCIPsdpiIsOptimal (SCIP_SDPI *sdpi) |
SCIP_Bool | SCIPsdpiIsAcceptable (SCIP_SDPI *sdpi) |
SCIP_RETCODE | SCIPsdpiGetObjval (SCIP_SDPI *sdpi, SCIP_Real *objval) |
SCIP_RETCODE | SCIPsdpiGetLowerObjbound (SCIP_SDPI *sdpi, SCIP_Real *objlb) |
SCIP_RETCODE | SCIPsdpiGetSol (SCIP_SDPI *sdpi, SCIP_Real *objval, SCIP_Real *dualsol, int *dualsollength) |
SCIP_RETCODE | SCIPsdpiGetPrimalBoundVars (SCIP_SDPI *sdpi, SCIP_Real *lbvars, SCIP_Real *ubvars, int *arraylength) |
SCIP_RETCODE | SCIPsdpiGetIterations (SCIP_SDPI *sdpi, int *iterations) |
SCIP_RETCODE | SCIPsdpiGetSdpCalls (SCIP_SDPI *sdpi, int *calls) |
SCIP_RETCODE | SCIPsdpiSettingsUsed (SCIP_SDPI *sdpi, SCIP_SDPSOLVERSETTING *usedsetting) |
SCIP_RETCODE | SCIPsdpiSlaterSettings (SCIP_SDPI *sdpi, SCIP_SDPSLATERSETTING *slatersetting) |
SCIP_RETCODE | SCIPsdpiSlater (SCIP_SDPI *sdpi, SCIP_SDPSLATER *primalslater, SCIP_SDPSLATER *dualslater) |
Numerical Methods | |
SCIP_Real | SCIPsdpiInfinity (SCIP_SDPI *sdpi) |
SCIP_Bool | SCIPsdpiIsInfinity (SCIP_SDPI *sdpi, SCIP_Real val) |
SCIP_RETCODE | SCIPsdpiGetRealpar (SCIP_SDPI *sdpi, SCIP_SDPPARAM type, SCIP_Real *dval) |
SCIP_RETCODE | SCIPsdpiSetRealpar (SCIP_SDPI *sdpi, SCIP_SDPPARAM type, SCIP_Real dval) |
SCIP_RETCODE | SCIPsdpiGetIntpar (SCIP_SDPI *sdpi, SCIP_SDPPARAM type, int *ival) |
SCIP_RETCODE | SCIPsdpiSetIntpar (SCIP_SDPI *sdpi, SCIP_SDPPARAM type, int ival) |
SCIP_RETCODE | SCIPsdpiComputeLambdastar (SCIP_SDPI *sdpi, SCIP_Real maxguess) |
SCIP_RETCODE | SCIPsdpiComputePenaltyparam (SCIP_SDPI *sdpi, SCIP_Real maxcoeff, SCIP_Real *penaltyparam) |
SCIP_RETCODE | SCIPsdpiComputeMaxPenaltyparam (SCIP_SDPI *sdpi, SCIP_Real penaltyparam, SCIP_Real *maxpenaltyparam) |
File Interface Methods | |
SCIP_RETCODE | SCIPsdpiReadSDP (SCIP_SDPI *sdpi, const char *fname) |
SCIP_RETCODE | SCIPsdpiWriteSDP (SCIP_SDPI *sdpi, const char *fname) |
General interface methods for SDP-preprocessing (mainly fixing variables and removing empty rows/cols)
Definition in file sdpi.c.
#define BMS_CALL | ( | x | ) |
Checks if a BMSallocMemory-call was successfull, otherwise returns SCIP_NOMEMRY
Definition at line 57 of file sdpi.c.
Referenced by checkFixedFeasibilitySdp(), checkSlaterCondition(), compConstMatAfterFixings(), SCIPsdpiAddLPRows(), SCIPsdpiClone(), SCIPsdpiCreate(), SCIPsdpiDelLPRows(), SCIPsdpiLoadSDP(), and SCIPsdpiSolve().
#define CHECK_IF_SOLVED | ( | sdpi | ) |
this will be called in all functions that want to access solution information to check if the problem was solved since the last change of the problem
Definition at line 68 of file sdpi.c.
Referenced by SCIPsdpiGetObjval(), SCIPsdpiGetPrimalBoundVars(), SCIPsdpiGetSol(), and SCIPsdpiGetSolFeasibility().
#define CHECK_IF_SOLVED_BOOL | ( | sdpi | ) |
same as CHECK_IF_SOLVED, but this will be used in functions returning a boolean value
Definition at line 79 of file sdpi.c.
Referenced by SCIPsdpiFeasibilityKnown(), SCIPsdpiIsConverged(), SCIPsdpiIsDualFeasible(), SCIPsdpiIsDualInfeasible(), SCIPsdpiIsDualUnbounded(), SCIPsdpiIsIterlimExc(), SCIPsdpiIsObjlimExc(), SCIPsdpiIsOptimal(), SCIPsdpiIsPrimalFeasible(), SCIPsdpiIsPrimalInfeasible(), and SCIPsdpiIsPrimalUnbounded().
#define DUPLICATE_ARRAY_NULL | ( | blkmem, | |
target, | |||
source, | |||
size | |||
) |
duplicate an array that might be null (in that case null is returned, otherwise BMSduplicateMemory is called)
Definition at line 90 of file sdpi.c.
Referenced by checkSlaterCondition(), and SCIPsdpiLoadSDP().
#define SCIP_CALL_PARAM | ( | x | ) |
same as SCIP_CALL, but gives a SCIP_PARAMETERUNKNOWN error if it fails
Definition at line 100 of file sdpi.c.
Referenced by SCIPsdpiGetIntpar(), SCIPsdpiGetRealpar(), SCIPsdpiSetIntpar(), SCIPsdpiSetRealpar(), and SCIPsdpiSolve().
#define NINCREASESGAMMA 2 |
How often will Gamma at most be increased if penalty formulation failed
Definition at line 116 of file sdpi.c.
Referenced by SCIPsdpiSolve().
#define MIN_EPSILON 1e-10 |
minimum epsilon for SDP-solver if decreasing it for a penalty formulation
Definition at line 117 of file sdpi.c.
Referenced by SCIPsdpiSolve().
#define DEFAULT_SDPSOLVEREPSILON 1e-4 |
the stopping criterion for the duality gap the sdpsolver should use
Definition at line 119 of file sdpi.c.
Referenced by SCIPsdpiCreate().
#define DEFAULT_SDPSOLVERFEASTOL 1e-6 |
the feasibility tolerance the SDP-solver should use for the SDP constraints
Definition at line 120 of file sdpi.c.
Referenced by SCIPsdpiCreate().
#define DEFAULT_PENALTYPARAM 1e+5 |
the starting penalty parameter Gamma used for the penalty formulation if the SDP-solver didn't converge
Definition at line 121 of file sdpi.c.
Referenced by SCIPsdpiCreate().
#define DEFAULT_MAXPENALTYPARAM 1e+10 |
the maximum penalty parameter Gamma used for the penalty formulation if the SDP-solver didn't converge
Definition at line 122 of file sdpi.c.
Referenced by SCIPsdpiCreate().
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For given row and column (i,j) checks if i >= j, so that i and j give a position in the lower triangular part, otherwise i and j will be switched. This function will be called whenever a position in a symmetric matrix is given, to prevent problems if position (i,j) is given but later (j,i) should be changed.
i | row index |
j | column index |
Definition at line 193 of file sdpi.c.
Referenced by SCIPsdpiLoadSDP().
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tests if for a given variable the lower bound is in an epsilon neighborhood of the upper bound
sdpi | pointer to an SDP-interface structure |
v | global index of the variable to check this for |
Definition at line 210 of file sdpi.c.
Referenced by checkAllFixed(), checkSlaterCondition(), compConstMatAfterFixings(), computeLpLhsRhsAfterFixings(), and findEmptyRowColsSDP().
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Computes the constant matrix after all variables with lb=ub have been fixed and their nonzeros were moved to the constant part. The five variables other than sdpi are used to return the matrix.
The size of sdpconstnblocknonz and the first pointers of sdpconst row/col/val should be equal to sdpi->nsdpblocks, the size of sdpconst row/col/val [i], which is given in sdpconstblocknnonz, needs to be sufficient, otherwise the needed length will be returned in sdpconstnblocknonz and a debug message will be thrown.
sdpi | pointer to an SDP-interface structure |
sdpconstnnonz | number of nonzero elements in the constant matrices of the SDP-blocks |
sdpconstnblocknonz | number of nonzeros for each variable in the constant part, also the i-th entry gives the number of entries of sdpconst row/col/val [i] |
sdpconstrow | pointers to row-indices for each block |
sdpconstcol | pointers to column-indices for each block |
sdpconstval | pointers to the values of the nonzeros for each block |
Definition at line 242 of file sdpi.c.
References BMS_CALL, isFixed(), and SCIPsdpVarfixerMergeArraysIntoNew().
Referenced by SCIPsdpiSolve().
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takes the sdpi and the computed constant matrix after fixings as input and checks for empty rows and columns in each block, which should be removed to not harm the Slater condition. It also removes SDP-blocks with no entries left, these are returned in blockindchanges and nremovedblocks.
sdpi | pointer to an SDP-interface structure |
sdpconstnblocknonz | number of nonzeros for each variable in the constant part, also the i-th entry gives the number of entries of sdpconst row/col/val [i] |
sdpconstrow | pointers to row-indices for each block |
sdpconstcol | pointers to column-indices for each block |
sdpconstval | pointers to the values of the nonzeros for each block |
indchanges | pointer to store the changes needed to be done to the indices, if indchange[block][nonz]=-1, then the index can be removed, otherwise it gives the number of indices removed before this, i.e. the value to decrease this index by, this array should have memory allocated in the size sdpi->nsdpblocks times sdpi->sdpblocksizes[block] |
nremovedinds | pointer to store the number of rows/cols to be fixed for each block |
blockindchanges | pointer to store index change for each block, system is the same as for indchanges |
nremovedblocks | pointer to store the number of blocks to be removed from the SDP |
Definition at line 356 of file sdpi.c.
References isFixed().
Referenced by SCIPsdpiSolve().
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computes the number of active variables for each constraint, thereby detecting constraints that may be removed, and computes the LP-left- and right-hand-sides after including all locally fixed variables for all constraints with at least two remaining active variables
sdpi | pointer to an SDP-interface structure |
nactivelpcons | output: number of active LP-constraints |
lplhsafterfix | output: first nlpcons (output) entries give left-hand sides of active lp-constraints after fixing variables, these are in the same relative order as before (with non-active rows removed) |
lprhsafterfix | output: first nlpcons (output) entries give right-hand sides of active lp-constraints after fixing variables, these are in the same relative order as before (with non-active rows removed) |
rownactivevars | output: number of active variables for every row |
fixingsfound | output: returns true if a variable was fixed during this function call |
Definition at line 483 of file sdpi.c.
References isFixed(), and SCIPsdpiInfinity().
Referenced by SCIPsdpiSolve().
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checks whether all variables are fixed (lb=ub), in that case changes the sdpi->allfixed pointer accordingly
sdpi | pointer to an SDP-interface structure |
Definition at line 830 of file sdpi.c.
References isFixed().
Referenced by SCIPsdpiSolve().
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If all variables are fixed, check whether the remaining solution is feasible for the SDP-constraints (LP-constraints should be checked already when computing the rhs after fixing)
sdpi | pointer to an SDP-interface structure |
sdpconstnblocknonz | number of nonzeros for each variable in the constant part, also the i-th entry gives the number of entries of sdpconst row/col/val [i] |
sdpconstrow | pointers to row-indices for each block |
sdpconstcol | pointers to column-indices for each block |
sdpconstval | pointers to the values of the nonzeros for each block |
indchanges | pointer to store the changes needed to be done to the indices, if indchanges[block][nonz]=-1, then the index can be removed, otherwise it gives the number of indices removed before this, i.e. the value to decrease this index by, this array should have memory allocated in the size sdpi->nsdpblocks times sdpi->sdpblocksizes[block] |
nremovedinds | pointer to store the number of rows/cols to be fixed for each block |
blockindchanges | pointer to store index change for each block, system is the same as for indchanges |
Definition at line 858 of file sdpi.c.
References BMS_CALL, and SCIPlapackComputeIthEigenvalue().
Referenced by SCIPsdpiSolve().
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checks primal and dual Slater condition and outputs result depending on Slater settings in sdpi
sdpi | pointer to an SDP-interface structure |
timelimit | after this many seconds solving will be aborted (currently only implemented for DSDP) |
starttime | currenttime - starttime will be substracted from the timelimit given to the solver |
sdpconstnblocknonz | number of nonzeros for each variable in the constant part, also the i-th entry gives the number of entries of sdpconst row/col/val [i] (may be NULL if sdpconstnnonz = 0) |
sdpconstrow | pointer to row-indices of constant matrix for each block (may be NULL if sdpconstnnonz = 0) |
sdpconstcol | pointer to column-indices of constant matrix for each block (may be NULL if sdpconstnnonz = 0) |
sdpconstval | pointer to values of constant matrix for each block (may be NULL if sdpconstnnonz = 0) |
indchanges | index changes for each variable in each block; variable v is removed in block b if indchanges[b][v] = -1, otherwise it gives the number of removed variables with smaller indices (may be NULL if sdpi->nsdpblocks = 0) |
nremovedinds | number of removed variables for each block (may be NULL if sdpi->nsdpblocks = 0) |
lplhsafterfix | left-hand sides of LP-constraints after fixing variables (may be NULL if nactivelpcons = 0) |
lprhsafterfix | right-hand sides of LP-constraints after fixing variables (may be NULL if nactivelpcons = 0) |
rowsnactivevars | number of active variables for each LP-constraint (may be NULL if sdpi->nlpcons = 0) |
blockindchanges | index changes for SDP-blocks; blockindchanges[b] = -1 if SDP-block b should be removed (may be NULL if sdpi->nsdpblocks = 0) |
sdpconstnnonz | total number of nonzeros in the constant SDP part |
nactivelpcons | number of active LP-constraints |
nremovedblocks | number of removed SDP-blocks |
rootnodefailed | if TRUE we will output a message that the root node could not be solved and whether this was due to the Slater condition, otherwise we will print depending on sdpi->slatercheck |
Definition at line 964 of file sdpi.c.
References BMS_CALL, DUPLICATE_ARRAY_NULL, isFixed(), SCIP_SDPSLATER_HOLDS, SCIP_SDPSLATER_INF, SCIP_SDPSLATER_NOINFO, SCIP_SDPSLATER_NOT, SCIP_SDPSOLVERSETTING_UNSOLVED, SCIPsdpiIsInfinity(), SCIPsdpiSolverGetObjval(), SCIPsdpiSolverInfinity(), SCIPsdpiSolverIsDualInfeasible(), SCIPsdpiSolverIsDualUnbounded(), SCIPsdpiSolverIsInfinity(), SCIPsdpiSolverIsOptimal(), SCIPsdpiSolverIsPrimalUnbounded(), SCIPsdpiSolverLoadAndSolve(), and SCIPsdpiSolverLoadAndSolveWithPenalty().
Referenced by SCIPsdpiSolve().
const char* SCIPsdpiGetSolverName | ( | void | ) |
gets name and potentially version of SDP-solver
Definition at line 1351 of file sdpi.c.
References SCIPsdpiSolverGetSolverName().
Referenced by SCIP_DECL_RELAXEXIT(), SCIP_DECL_RELAXINITSOL(), and SCIPincludeRelaxSdp().
const char* SCIPsdpiGetSolverDesc | ( | void | ) |
gets description of SDP-solver (developer, webpage, ...)
Definition at line 1359 of file sdpi.c.
References SCIPsdpiSolverGetSolverDesc().
Referenced by SCIPincludeRelaxSdp().
void* SCIPsdpiGetSolverPointer | ( | SCIP_SDPI * | sdpi | ) |
gets pointer for SDP-solver - use only with great care
The behavior of this function depends on the solver and its use is therefore only recommended if you really know what you are doing. In general, it returns a pointer to the SDP-solver object.
sdpi | SDP-interface structure |
Definition at line 1372 of file sdpi.c.
References SCIPsdpiSolverGetSolverPointer().
SCIP_RETCODE SCIPsdpiCreate | ( | SCIP_SDPI ** | sdpi, |
SCIP_MESSAGEHDLR * | messagehdlr, | ||
BMS_BLKMEM * | blkmem | ||
) |
creates an sdpi object
sdpi | pointer to an SDP-interface structure |
messagehdlr | message handler to use for printing messages, or NULL |
blkmem | block memory |
Definition at line 1390 of file sdpi.c.
References BMS_CALL, DEFAULT_MAXPENALTYPARAM, DEFAULT_PENALTYPARAM, DEFAULT_SDPSOLVEREPSILON, DEFAULT_SDPSOLVERFEASTOL, SCIP_SDPSLATER_NOINFO, SCIPsdpiSolverCreate(), and SCIPsdpiSolverInfinity().
Referenced by SCIPincludeRelaxSdp().
SCIP_RETCODE SCIPsdpiFree | ( | SCIP_SDPI ** | sdpi | ) |
deletes an sdpi object
sdpi | pointer to an SDP-interface structure |
Definition at line 1454 of file sdpi.c.
References SCIPsdpiSolverFree().
Referenced by SCIP_DECL_RELAXFREE().
cloning method of the general SDP-Interface
oldsdpi | pointer to the SDP-interface structure that should be cloned |
newsdpi | pointer to an SDP-interface structure to clone into |
Definition at line 1519 of file sdpi.c.
References BMS_CALL, and SCIPsdpiSolverCreate().
SCIP_RETCODE SCIPsdpiLoadSDP | ( | SCIP_SDPI * | sdpi, |
int | nvars, | ||
SCIP_Real * | obj, | ||
SCIP_Real * | lb, | ||
SCIP_Real * | ub, | ||
int | nsdpblocks, | ||
int * | sdpblocksizes, | ||
int * | sdpnblockvars, | ||
int | sdpconstnnonz, | ||
int * | sdpconstnblocknonz, | ||
int ** | sdpconstrow, | ||
int ** | sdpconstcol, | ||
SCIP_Real ** | sdpconstval, | ||
int | sdpnnonz, | ||
int ** | sdpnblockvarnonz, | ||
int ** | sdpvar, | ||
int *** | sdprow, | ||
int *** | sdpcol, | ||
SCIP_Real *** | sdpval, | ||
int | nlpcons, | ||
SCIP_Real * | lplhs, | ||
SCIP_Real * | lprhs, | ||
int | lpnnonz, | ||
int * | lprow, | ||
int * | lpcol, | ||
SCIP_Real * | lpval | ||
) |
copies SDP data into SDP-solver
sdpi | SDP-interface structure |
nvars | number of variables |
obj | objective function values of variables |
lb | lower bounds of variables |
ub | upper bounds of variables |
nsdpblocks | number of SDP-blocks |
sdpblocksizes | sizes of the SDP-blocks (may be NULL if nsdpblocks = sdpconstnnonz = sdpnnonz = 0) |
sdpnblockvars | number of variables in each SDP-block (may be NULL if nsdpblocks = sdpconstnnonz = sdpnnonz = 0) |
sdpconstnnonz | number of nonzero elements in the constant matrices of the SDP-blocks |
sdpconstnblocknonz | number of nonzeros for each variable in the constant part, also the i-th entry gives the number of entries of sdpconst row/col/val [i] |
sdpconstrow | pointer to row-indices of constant matrix for each block (may be NULL if sdpconstnnonz = 0) |
sdpconstcol | pointer to column-indices of constant matrix for each block (may be NULL if sdpconstnnonz = 0) |
sdpconstval | pointer to values of entries of constant matrix for each block (may be NULL if sdpconstnnonz = 0) |
sdpnnonz | number of nonzero elements in the SDP-constraint-matrices |
sdpnblockvarnonz | sdpnblockvarnonz[i][j] gives the number of nonzeros for the j-th variable (not necessarly variable j) in the i-th block, this is also the length of row/col/val[i][j] |
sdpvar | sdpvar[i][j] gives the global index of the j-th variable (according to the sorting for row/col/val) in the i-th block |
sdprow | pointer to the row-indices for each block and variable in this block, so row[i][j][k] gives the k-th nonzero of the j-th variable (not necessarly variable j) in the i-th block (may be NULL if sdptnnonz = 0) |
sdpcol | pointer to the column-indices for each block and variable in this block (may be NULL if sdpnnonz = 0) |
sdpval | pointer to the values of the nonzeros for each block and variable in this block (may be NULL if sdpnnonz = 0) |
nlpcons | number of LP-constraints |
lplhs | left-hand sides of LP rows (may be NULL if nlpcons = 0) |
lprhs | right-hand sides of LP rows (may be NULL if nlpcons = 0) |
lpnnonz | number of nonzero elements in the LP-constraint-matrix |
lprow | row-index for each entry in lpval-array (may be NULL if lpnnonz = 0) |
lpcol | column-index for each entry in lpval-array (may be NULL if lpnnonz = 0) |
lpval | values of LP-constraint matrix entries (may be NULL if lpnnonz = 0) |
Definition at line 1638 of file sdpi.c.
References BMS_CALL, DUPLICATE_ARRAY_NULL, and ensureLowerTriangular().
Referenced by putSdpDataInInterface().
SCIP_RETCODE SCIPsdpiAddLPRows | ( | SCIP_SDPI * | sdpi, |
int | nrows, | ||
const SCIP_Real * | lhs, | ||
const SCIP_Real * | rhs, | ||
int | nnonz, | ||
const int * | row, | ||
const int * | col, | ||
const SCIP_Real * | val | ||
) |
adds rows to the LP-Block
sdpi | SDP-interface structure |
nrows | number of rows to be added |
lhs | left-hand sides of new rows |
rhs | right-hand sides of new rows |
nnonz | number of nonzero elements to be added to the LP constraint matrix |
row | row-indices of constraint-matrix entries, going from 0 to nrows - 1, these will be changed to nlpcons + i |
col | column-indices of constraint-matrix entries |
val | values of constraint-matrix entries |
Definition at line 1858 of file sdpi.c.
References BMS_CALL.
Referenced by putLpDataInInterface().
SCIP_RETCODE SCIPsdpiDelLPRows | ( | SCIP_SDPI * | sdpi, |
int | firstrow, | ||
int | lastrow | ||
) |
deletes all rows in the given range from the LP-Block
sdpi | SDP-interface structure |
firstrow | first row to be deleted |
lastrow | last row to be deleted |
Definition at line 1923 of file sdpi.c.
References BMS_CALL.
Referenced by putLpDataInInterface(), and SCIPsdpiDelLPRowset().
SCIP_RETCODE SCIPsdpiDelLPRowset | ( | SCIP_SDPI * | sdpi, |
int * | dstat | ||
) |
deletes LP-rows from SDP-interface
sdpi | SDP-interface structure |
dstat | deletion status of LP rows input: 1 if row should be deleted, 0 otherwise output: new position of row, -1 if row was deleted |
Definition at line 2033 of file sdpi.c.
References SCIPsdpiDelLPRows().
SCIP_RETCODE SCIPsdpiClear | ( | SCIP_SDPI * | sdpi | ) |
clears the whole SDP
sdpi | SDP-interface structure |
Definition at line 2075 of file sdpi.c.
References SCIPsdpiSolverResetCounter().
Referenced by SCIP_DECL_RELAXEXIT().
SCIP_RETCODE SCIPsdpiChgObj | ( | SCIP_SDPI * | sdpi, |
int | nvars, | ||
const int * | ind, | ||
const SCIP_Real * | obj | ||
) |
changes objective coefficients of variables
sdpi | SDP-interface structure |
nvars | number of variables to change objective coefficients for |
ind | variables indices |
obj | new objective coefficients |
Definition at line 2091 of file sdpi.c.
Referenced by putLpDataInInterface().
SCIP_RETCODE SCIPsdpiChgBounds | ( | SCIP_SDPI * | sdpi, |
int | nvars, | ||
const int * | ind, | ||
const SCIP_Real * | lb, | ||
const SCIP_Real * | ub | ||
) |
changes lower and upper bounds of variables
sdpi | SDP-interface structure |
nvars | number of variables to change bounds for |
ind | variables indices |
lb | values for the new lower bounds |
ub | values for the new upper bounds |
Definition at line 2120 of file sdpi.c.
Referenced by putLpDataInInterface().
SCIP_RETCODE SCIPsdpiChgLPLhRhSides | ( | SCIP_SDPI * | sdpi, |
int | nrows, | ||
const int * | ind, | ||
const SCIP_Real * | lhs, | ||
const SCIP_Real * | rhs | ||
) |
SCIP_RETCODE SCIPsdpiGetNLPRows | ( | SCIP_SDPI * | sdpi, |
int * | nlprows | ||
) |
gets the number of LP-rows in the SDP
sdpi | SDP-interface structure |
nlprows | pointer to store the number of rows |
Definition at line 2198 of file sdpi.c.
Referenced by putLpDataInInterface().
SCIP_RETCODE SCIPsdpiGetNSDPBlocks | ( | SCIP_SDPI * | sdpi, |
int * | nsdpblocks | ||
) |
SCIP_RETCODE SCIPsdpiGetNVars | ( | SCIP_SDPI * | sdpi, |
int * | nvars | ||
) |
SCIP_RETCODE SCIPsdpiGetSDPNNonz | ( | SCIP_SDPI * | sdpi, |
int * | nnonz | ||
) |
SCIP_RETCODE SCIPsdpiGetConstNNonz | ( | SCIP_SDPI * | sdpi, |
int * | nnonz | ||
) |
SCIP_RETCODE SCIPsdpiGetLPNNonz | ( | SCIP_SDPI * | sdpi, |
int * | nnonz | ||
) |
SCIP_RETCODE SCIPsdpiGetObj | ( | SCIP_SDPI * | sdpi, |
int | firstvar, | ||
int | lastvar, | ||
SCIP_Real * | vals | ||
) |
gets objective coefficients from SDP-interface
sdpi | SDP-interface structure |
firstvar | first variable to get objective coefficient for |
lastvar | last variable to get objective coefficient for |
vals | pointer to store objective coefficients (memory of size lastvar - firstvar + 1 needs to be allocated) |
SCIP_RETCODE SCIPsdpiGetBounds | ( | SCIP_SDPI * | sdpi, |
int | firstvar, | ||
int | lastvar, | ||
SCIP_Real * | lbs, | ||
SCIP_Real * | ubs | ||
) |
gets current variable bounds from SDP-interface
sdpi | SDP-interface structure |
firstvar | first variable to get bounds for |
lastvar | last variable to get bounds for |
lbs | pointer to store lower bound values, or NULL (memory of size lastvar - firstvar + 1 needs to be allocated) |
ubs | pointer to store upper bound values, or NULL (memory of size lastvar - firstvar + 1 needs to be allocated) |
SCIP_RETCODE SCIPsdpiGetLhSides | ( | SCIP_SDPI * | sdpi, |
int | firstrow, | ||
int | lastrow, | ||
SCIP_Real * | lhss | ||
) |
SCIP_RETCODE SCIPsdpiGetRhSides | ( | SCIP_SDPI * | sdpi, |
int | firstrow, | ||
int | lastrow, | ||
SCIP_Real * | rhss | ||
) |
gets current right-hand sides from SDP-interface
sdpi | SDP-interface structure |
firstrow | first row to get sides for |
lastrow | last row to get sides for |
rhss | pointer to store right-hand side values (memory of size lastvar - firstvar + 1 needs to be allocated) |
SCIP_RETCODE SCIPsdpiSolve | ( | SCIP_SDPI * | sdpi, |
SCIP_Real * | start, | ||
SCIP_SDPSOLVERSETTING | startsettings, | ||
SCIP_Bool | enforceslatercheck, | ||
SCIP_Real | timelimit | ||
) |
solves the SDP, as start optionally a starting point for the solver may be given, if it is NULL, the solver will start from scratch
sdpi | SDP-interface structure |
start | NULL or a starting point for the solver, this should have length nvars |
startsettings | settings used to start with in SDPA, currently not used for DSDP, set this to SCIP_SDPSOLVERSETTING_UNSOLVED to ignore it and start from scratch |
enforceslatercheck | always check for Slater condition in case the problem could not be solved and printf the solution of this check |
timelimit | after this many seconds solving will be aborted (currently only implemented for DSDP) |
Definition at line 2388 of file sdpi.c.
References BMS_CALL, checkAllFixed(), checkFixedFeasibilitySdp(), checkSlaterCondition(), compConstMatAfterFixings(), computeLpLhsRhsAfterFixings(), findEmptyRowColsSDP(), MIN_EPSILON, NINCREASESGAMMA, SCIP_CALL_PARAM, SCIP_SDPPAR_EPSILON, SCIP_SDPSLATER_NOINFO, SCIP_SDPSOLVERSETTING_UNSOLVED, SCIPsdpiInfinity(), SCIPsdpiIsInfinity(), SCIPsdpiSolverGetIterations(), SCIPsdpiSolverGetObjval(), SCIPsdpiSolverGetSdpCalls(), SCIPsdpiSolverIncreaseCounter(), SCIPsdpiSolverInfinity(), SCIPsdpiSolverIsAcceptable(), SCIPsdpiSolverIsDualInfeasible(), SCIPsdpiSolverIsOptimal(), SCIPsdpiSolverIsTimelimExc(), SCIPsdpiSolverLoadAndSolve(), SCIPsdpiSolverLoadAndSolveWithPenalty(), SCIPsdpiSolverSetRealpar(), and SCIPsdpiSolverWasSolved().
Referenced by calcRelax().
SCIP_Bool SCIPsdpiWasSolved | ( | SCIP_SDPI * | sdpi | ) |
returns whether a solve method was called after the last modification of the SDP
sdpi | SDP-interface structure |
Definition at line 2752 of file sdpi.c.
Referenced by calcRelax().
SCIP_Bool SCIPsdpiSolvedOrig | ( | SCIP_SDPI * | sdpi | ) |
returns whether the original problem was solved, if SCIPsdpiWasSolved = true and SCIPsdpiSolvedOrig = false, then a penalty formulation was solved
sdpi | SDP-interface structure |
Definition at line 2762 of file sdpi.c.
Referenced by calcRelax(), and SCIPrelaxSdpSolvedOrig().
SCIP_Bool SCIPsdpiFeasibilityKnown | ( | SCIP_SDPI * | sdpi | ) |
returns true if the solver could determine whether the problem is feasible, so it returns true if the solver knows that the problem is feasible/infeasible/unbounded, it returns false if the solver does not know anything about the feasibility status and thus the functions IsPrimalFeasible etc. should not be used
sdpi | SDP-interface structure |
Definition at line 2774 of file sdpi.c.
References CHECK_IF_SOLVED_BOOL, and SCIPsdpiSolverFeasibilityKnown().
Referenced by calcRelax().
SCIP_RETCODE SCIPsdpiGetSolFeasibility | ( | SCIP_SDPI * | sdpi, |
SCIP_Bool * | primalfeasible, | ||
SCIP_Bool * | dualfeasible | ||
) |
gets information about primal and dual feasibility of the current SDP-solution
sdpi | SDP-interface structure |
primalfeasible | pointer to store the primal feasibility status |
dualfeasible | pointer to store the dual feasibility status |
Definition at line 2788 of file sdpi.c.
References CHECK_IF_SOLVED, and SCIPsdpiSolverGetSolFeasibility().
SCIP_Bool SCIPsdpiIsPrimalUnbounded | ( | SCIP_SDPI * | sdpi | ) |
returns TRUE iff SDP is proven to be primal unbounded; returns FALSE with a debug-message if the solver could not determine feasibility
sdpi | SDP-interface structure |
Definition at line 2817 of file sdpi.c.
References CHECK_IF_SOLVED_BOOL, and SCIPsdpiSolverIsPrimalUnbounded().
SCIP_Bool SCIPsdpiIsPrimalInfeasible | ( | SCIP_SDPI * | sdpi | ) |
returns TRUE iff SDP is proven to be primal infeasible; returns FALSE with a debug-message if the solver could not determine feasibility
sdpi | SDP-interface structure |
Definition at line 2840 of file sdpi.c.
References CHECK_IF_SOLVED_BOOL, and SCIPsdpiSolverIsPrimalInfeasible().
SCIP_Bool SCIPsdpiIsPrimalFeasible | ( | SCIP_SDPI * | sdpi | ) |
returns TRUE iff SDP is proven to be primal feasible; returns FALSE with a debug-message if the solver could not determine feasibility
sdpi | SDP-interface structure |
Definition at line 2863 of file sdpi.c.
References CHECK_IF_SOLVED_BOOL, and SCIPsdpiSolverIsPrimalFeasible().
Referenced by calcRelax().
SCIP_Bool SCIPsdpiIsDualUnbounded | ( | SCIP_SDPI * | sdpi | ) |
returns TRUE iff SDP is proven to be dual unbounded; returns FALSE with a debug-message if the solver could not determine feasibility
sdpi | SDP-interface structure |
Definition at line 2886 of file sdpi.c.
References CHECK_IF_SOLVED_BOOL, and SCIPsdpiSolverIsDualUnbounded().
Referenced by calcRelax(), and SCIP_DECL_RELAXEXEC().
SCIP_Bool SCIPsdpiIsDualInfeasible | ( | SCIP_SDPI * | sdpi | ) |
returns TRUE iff SDP is proven to be dual infeasible; returns FALSE with a debug-message if the solver could not determine feasibility
sdpi | SDP-interface structure |
Definition at line 2909 of file sdpi.c.
References CHECK_IF_SOLVED_BOOL, and SCIPsdpiSolverIsDualInfeasible().
Referenced by calcRelax().
SCIP_Bool SCIPsdpiIsDualFeasible | ( | SCIP_SDPI * | sdpi | ) |
returns TRUE iff SDP is proven to be dual feasible; returns FALSE with a debug-message if the solver could not determine feasibility
sdpi | SDP-interface structure |
Definition at line 2932 of file sdpi.c.
References CHECK_IF_SOLVED_BOOL, and SCIPsdpiSolverIsDualFeasible().
Referenced by calcRelax().
SCIP_Bool SCIPsdpiIsConverged | ( | SCIP_SDPI * | sdpi | ) |
returns TRUE iff the solver converged
sdpi | SDP-interface structure |
Definition at line 2954 of file sdpi.c.
References CHECK_IF_SOLVED_BOOL, and SCIPsdpiSolverIsConverged().
SCIP_Bool SCIPsdpiIsObjlimExc | ( | SCIP_SDPI * | sdpi | ) |
returns TRUE iff the objective limit was reached
sdpi | SDP-interface structure |
Definition at line 2976 of file sdpi.c.
References CHECK_IF_SOLVED_BOOL, and SCIPsdpiSolverIsObjlimExc().
Referenced by calcRelax().
SCIP_Bool SCIPsdpiIsIterlimExc | ( | SCIP_SDPI * | sdpi | ) |
returns TRUE iff the iteration limit was reached
sdpi | SDP-interface structure |
Definition at line 2998 of file sdpi.c.
References CHECK_IF_SOLVED_BOOL, and SCIPsdpiSolverIsIterlimExc().
SCIP_Bool SCIPsdpiIsTimelimExc | ( | SCIP_SDPI * | sdpi | ) |
returns TRUE iff the time limit was reached
sdpi | SDP-interface structure |
Definition at line 3020 of file sdpi.c.
References SCIPsdpiSolverIsTimelimExc().
Referenced by calcRelax().
int SCIPsdpiGetInternalStatus | ( | SCIP_SDPI * | sdpi | ) |
returns the internal solution status of the solver, which has the following meaning:
-1: solver was not started
0: converged
1: infeasible start
2: numerical problems
3: objective limit reached
4: iteration limit reached
5: time limit reached
6: user termination
7: other
sdpi | SDP-interface structure |
Definition at line 3055 of file sdpi.c.
References SCIPsdpiSolverGetInternalStatus().
SCIP_Bool SCIPsdpiIsOptimal | ( | SCIP_SDPI * | sdpi | ) |
returns TRUE iff SDP was solved to optimality, meaning the solver converged and returned primal and dual feasible solutions
sdpi | SDP-interface structure |
Definition at line 3081 of file sdpi.c.
References CHECK_IF_SOLVED_BOOL, and SCIPsdpiSolverIsOptimal().
SCIP_Bool SCIPsdpiIsAcceptable | ( | SCIP_SDPI * | sdpi | ) |
returns TRUE iff SDP was solved to optimality or some other status was reached that is still acceptable inside a Branch & Bound framework
sdpi | SDP-interface structure |
Definition at line 3104 of file sdpi.c.
References SCIPsdpiSolverIsAcceptable().
Referenced by calcRelax().
SCIP_RETCODE SCIPsdpiGetObjval | ( | SCIP_SDPI * | sdpi, |
SCIP_Real * | objval | ||
) |
gets objective value of solution
sdpi | SDP-interface structure |
objval | pointer to store the objective value |
Definition at line 3130 of file sdpi.c.
References CHECK_IF_SOLVED, and SCIPsdpiSolverGetObjval().
Referenced by SCIPsdpiGetSol().
SCIP_RETCODE SCIPsdpiGetLowerObjbound | ( | SCIP_SDPI * | sdpi, |
SCIP_Real * | objlb | ||
) |
gets the best lower bound on the objective (this is equal to objval, if the problem was solved successfully, but can also give a bound if we did not get a feasible solution using the penalty approach)
sdpi | SDP-interface structure |
objlb | pointer to store the lower bound on the objective value |
Definition at line 3165 of file sdpi.c.
References SCIPsdpiInfinity(), and SCIPsdpiSolverGetObjval().
Referenced by calcRelax().
SCIP_RETCODE SCIPsdpiGetSol | ( | SCIP_SDPI * | sdpi, |
SCIP_Real * | objval, | ||
SCIP_Real * | dualsol, | ||
int * | dualsollength | ||
) |
gets dual solution vector for feasible SDPs, if dualsollength isn't equal to the number of variables this will return the needed length and a debug message
sdpi | SDP-interface structure |
objval | pointer to store the objective value, may be NULL if not needed |
dualsol | pointer to store the dual solution vector, may be NULL if not needed |
dualsollength | length of the dualsol vector, must be 0 if dualsol is NULL, if this is less than the number of variables in the SDP, a debug-message will be thrown and this is set to the needed value |
Definition at line 3214 of file sdpi.c.
References CHECK_IF_SOLVED, SCIPsdpiGetObjval(), and SCIPsdpiSolverGetSol().
Referenced by calcRelax(), SCIP_DECL_RELAXEXEC(), and SCIPrelaxSdpGetRelaxSol().
SCIP_RETCODE SCIPsdpiGetPrimalBoundVars | ( | SCIP_SDPI * | sdpi, |
SCIP_Real * | lbvars, | ||
SCIP_Real * | ubvars, | ||
int * | arraylength | ||
) |
gets the primal variables corresponding to the lower and upper variable-bounds in the dual problem, the last input should specify the length of the arrays, if this is less than the number of variables, the needed length will be returned and a debug-message thrown
sdpi | pointer to an SDP-interface structure |
lbvars | pointer to store the values of the variables corresponding to lower bounds in the dual problems |
ubvars | pointer to store the values of the variables corresponding to upper bounds in the dual problems |
arraylength | input: length of lbvars and ubvars output: number of elements inserted into lbvars/ubvars (or needed length if it was not sufficient) |
Definition at line 3268 of file sdpi.c.
References CHECK_IF_SOLVED, and SCIPsdpiSolverGetPrimalBoundVars().
Referenced by SCIPrelaxSdpGetPrimalBoundVars().
SCIP_RETCODE SCIPsdpiGetIterations | ( | SCIP_SDPI * | sdpi, |
int * | iterations | ||
) |
gets the number of SDP-iterations of the last solve call
sdpi | SDP-interface structure |
iterations | pointer to store the number of iterations of the last solve call |
Definition at line 3300 of file sdpi.c.
Referenced by calcRelax().
SCIP_RETCODE SCIPsdpiGetSdpCalls | ( | SCIP_SDPI * | sdpi, |
int * | calls | ||
) |
gets the number of calls to the SDP-solver for the last solve call
sdpi | SDP-interface structure |
calls | pointer to store the number of calls to the SDP-solver for the last solve call |
Definition at line 3314 of file sdpi.c.
Referenced by calcRelax().
SCIP_RETCODE SCIPsdpiSettingsUsed | ( | SCIP_SDPI * | sdpi, |
SCIP_SDPSOLVERSETTING * | usedsetting | ||
) |
returns which settings the SDP-solver used in the last solve call
sdpi | SDP-interface structure |
usedsetting | the setting used by the SDP-solver |
Definition at line 3328 of file sdpi.c.
References SCIP_SDPSOLVERSETTING_PENALTY, SCIP_SDPSOLVERSETTING_UNSOLVED, and SCIPsdpiSolverSettingsUsed().
Referenced by calcRelax().
SCIP_RETCODE SCIPsdpiSlaterSettings | ( | SCIP_SDPI * | sdpi, |
SCIP_SDPSLATERSETTING * | slatersetting | ||
) |
returns which settings the SDP-solver used in the last solve call and whether primal and dual Slater condition were fullfilled
sdpi | SDP-interface structure |
slatersetting | the combination of Slater conditions and successfull settings |
Definition at line 3365 of file sdpi.c.
References SCIP_SDPSLATER_HOLDS, SCIP_SDPSLATER_INF, SCIP_SDPSLATER_NOINFO, SCIP_SDPSLATER_NOT, SCIP_SDPSLATERSETTING_BOUNDEDINFEASIBLE, SCIP_SDPSLATERSETTING_BOUNDEDNOSLATER, SCIP_SDPSLATERSETTING_BOUNDEDWSLATER, SCIP_SDPSLATERSETTING_NOINFO, SCIP_SDPSLATERSETTING_PENALTYINFEASIBLE, SCIP_SDPSLATERSETTING_PENALTYNOSLATER, SCIP_SDPSLATERSETTING_PENALTYWSLATER, SCIP_SDPSLATERSETTING_STABLEINFEASIBLE, SCIP_SDPSLATERSETTING_STABLENOSLATER, SCIP_SDPSLATERSETTING_STABLEWSLATER, SCIP_SDPSLATERSETTING_UNSOLVEDINFEASIBLE, SCIP_SDPSLATERSETTING_UNSOLVEDNOSLATER, SCIP_SDPSLATERSETTING_UNSOLVEDWSLATER, SCIP_SDPSLATERSETTING_UNSTABLEINFEASIBLE, SCIP_SDPSLATERSETTING_UNSTABLENOSLATER, SCIP_SDPSLATERSETTING_UNSTABLEWSLATER, SCIP_SDPSOLVERSETTING_FAST, SCIP_SDPSOLVERSETTING_MEDIUM, SCIP_SDPSOLVERSETTING_STABLE, SCIP_SDPSOLVERSETTING_UNSOLVED, SCIPsdpiSolverInfinity(), and SCIPsdpiSolverSettingsUsed().
Referenced by calcRelax().
SCIP_RETCODE SCIPsdpiSlater | ( | SCIP_SDPI * | sdpi, |
SCIP_SDPSLATER * | primalslater, | ||
SCIP_SDPSLATER * | dualslater | ||
) |
returns whether primal and dual Slater condition held for last solved SDP
sdpi | SDP-interface structure |
primalslater | pointer to save whether primal Slater condition held |
dualslater | pointer to save whether dual Slater condition held |
Definition at line 3670 of file sdpi.c.
References SCIP_SDPSLATER_NOINFO.
Referenced by calcRelax().
SCIP_Real SCIPsdpiInfinity | ( | SCIP_SDPI * | sdpi | ) |
returns value treated as infinity in the SDP-solver
sdpi | SDP-interface structure |
Definition at line 3714 of file sdpi.c.
References SCIPsdpiSolverInfinity().
Referenced by calcRelax(), computeLpLhsRhsAfterFixings(), SCIPsdpiGetLowerObjbound(), SCIPsdpiIsInfinity(), and SCIPsdpiSolve().
SCIP_Bool SCIPsdpiIsInfinity | ( | SCIP_SDPI * | sdpi, |
SCIP_Real | val | ||
) |
checks if given value is treated as (plus or minus) infinity in the SDP-solver
sdpi | SDP-interface structure |
val | value to be checked for infinity |
Definition at line 3724 of file sdpi.c.
References SCIPsdpiInfinity().
Referenced by checkSlaterCondition(), and SCIPsdpiSolve().
SCIP_RETCODE SCIPsdpiGetRealpar | ( | SCIP_SDPI * | sdpi, |
SCIP_SDPPARAM | type, | ||
SCIP_Real * | dval | ||
) |
gets floating point parameter of SDP-interface
sdpi | SDP-interface structure |
type | parameter number |
dval | pointer to store the parameter value |
Definition at line 3735 of file sdpi.c.
References SCIP_CALL_PARAM, SCIP_SDPPAR_EPSILON, SCIP_SDPPAR_FEASTOL, SCIP_SDPPAR_LAMBDASTAR, SCIP_SDPPAR_MAXPENALTYPARAM, SCIP_SDPPAR_OBJLIMIT, SCIP_SDPPAR_PENALTYPARAM, and SCIPsdpiSolverGetRealpar().
SCIP_RETCODE SCIPsdpiSetRealpar | ( | SCIP_SDPI * | sdpi, |
SCIP_SDPPARAM | type, | ||
SCIP_Real | dval | ||
) |
sets floating point parameter of SDP-interface
sdpi | SDP-interface structure |
type | parameter number |
dval | parameter value |
Definition at line 3781 of file sdpi.c.
References SCIP_CALL_PARAM, SCIP_SDPPAR_EPSILON, SCIP_SDPPAR_FEASTOL, SCIP_SDPPAR_LAMBDASTAR, SCIP_SDPPAR_MAXPENALTYPARAM, SCIP_SDPPAR_OBJLIMIT, SCIP_SDPPAR_PENALTYPARAM, and SCIPsdpiSolverSetRealpar().
Referenced by calcRelax(), and SCIP_DECL_RELAXINITSOL().
SCIP_RETCODE SCIPsdpiGetIntpar | ( | SCIP_SDPI * | sdpi, |
SCIP_SDPPARAM | type, | ||
int * | ival | ||
) |
gets integer parameter of SDP-interface
sdpi | SDP-interface structure |
type | parameter number |
ival | pointer to store the parameter value |
Definition at line 3820 of file sdpi.c.
References SCIP_CALL_PARAM, SCIP_SDPPAR_SDPINFO, SCIP_SDPPAR_SLATERCHECK, and SCIPsdpiSolverGetIntpar().
SCIP_RETCODE SCIPsdpiSetIntpar | ( | SCIP_SDPI * | sdpi, |
SCIP_SDPPARAM | type, | ||
int | ival | ||
) |
sets integer parameter of SDP-interface
sdpi | SDP-interface structure |
type | parameter number |
ival | parameter value |
Definition at line 3857 of file sdpi.c.
References SCIP_CALL_PARAM, SCIP_SDPPAR_SDPINFO, SCIP_SDPPAR_SLATERCHECK, SCIPsdpiSolverGetIntpar(), and SCIPsdpiSolverSetIntpar().
Referenced by SCIP_DECL_RELAXINITSOL().
SCIP_RETCODE SCIPsdpiComputeLambdastar | ( | SCIP_SDPI * | sdpi, |
SCIP_Real | maxguess | ||
) |
compute and set lambdastar (only used for SDPA)
sdpi | SDP-interface structure |
maxguess | maximum guess for lambda star of all SDP-constraints |
Definition at line 3894 of file sdpi.c.
References SCIPsdpiSolverComputeLambdastar().
Referenced by SCIP_DECL_RELAXINITSOL().
SCIP_RETCODE SCIPsdpiComputePenaltyparam | ( | SCIP_SDPI * | sdpi, |
SCIP_Real | maxcoeff, | ||
SCIP_Real * | penaltyparam | ||
) |
compute and set the penalty parameter
sdpi | SDP-interface structure |
maxcoeff | maximum objective coefficient |
penaltyparam | the computed penalty parameter |
Definition at line 3903 of file sdpi.c.
References SCIPsdpiSolverComputePenaltyparam().
Referenced by SCIP_DECL_RELAXINITSOL().
SCIP_RETCODE SCIPsdpiComputeMaxPenaltyparam | ( | SCIP_SDPI * | sdpi, |
SCIP_Real | penaltyparam, | ||
SCIP_Real * | maxpenaltyparam | ||
) |
compute and set the maximum penalty parameter
sdpi | SDP-interface structure |
penaltyparam | the initial penalty parameter |
maxpenaltyparam | the computed maximum penalty parameter |
Definition at line 3917 of file sdpi.c.
References SCIPsdpiSolverComputeMaxPenaltyparam().
Referenced by SCIP_DECL_RELAXINITSOL().
SCIP_RETCODE SCIPsdpiReadSDP | ( | SCIP_SDPI * | sdpi, |
const char * | fname | ||
) |