Scippy

SCIP

Solving Constraint Integer Programs

Detailed Description

trivialnegation primal heuristic

Author: Jakob Witzig

Definition in file heur_trivialnegation.c.

#include <assert.h>
#include <string.h>
#include "scip/heur_trivialnegation.h"
#include "scip/pub_reopt.h"
#include "scip/struct_scip.h"

Go to the source code of this file.

Macros
#define	HEUR_NAME "trivialnegation"

#define	HEUR_DESC "negate solution entries if an objective coefficient changes the sign, enters or leaves the objective."

#define	HEUR_DISPCHAR 'j'

#define	HEUR_PRIORITY 40000

#define	HEUR_FREQ -1

#define	HEUR_FREQOFS 0

#define	HEUR_MAXDEPTH 0

#define	HEUR_TIMING SCIP_HEURTIMING_BEFORENODE

#define	HEUR_USESSUBSCIP FALSE

Functions
static	SCIP_DECL_HEURCOPY (heurCopyTrivialnegation)

static	SCIP_DECL_HEUREXEC (heurExecTrivialnegation)

SCIP_RETCODE	SCIPincludeHeurTrivialnegation (SCIP *scip)

Macro Definition Documentation

#define HEUR_NAME "trivialnegation"

Definition at line 30 of file heur_trivialnegation.c.

Referenced by SCIP_DECL_HEURCOPY(), and SCIPincludeHeurTrivialnegation().

#define HEUR_DESC "negate solution entries if an objective coefficient changes the sign, enters or leaves the objective."

Definition at line 31 of file heur_trivialnegation.c.

Referenced by SCIPincludeHeurTrivialnegation().

#define HEUR_DISPCHAR 'j'

Definition at line 32 of file heur_trivialnegation.c.

Referenced by SCIPincludeHeurTrivialnegation().

#define HEUR_PRIORITY 40000

Definition at line 33 of file heur_trivialnegation.c.

Referenced by SCIPincludeHeurTrivialnegation().

#define HEUR_FREQ -1

Definition at line 34 of file heur_trivialnegation.c.

Referenced by SCIPincludeHeurTrivialnegation().

#define HEUR_FREQOFS 0

Definition at line 35 of file heur_trivialnegation.c.

Referenced by SCIPincludeHeurTrivialnegation().

#define HEUR_MAXDEPTH 0

Definition at line 36 of file heur_trivialnegation.c.

Referenced by SCIPincludeHeurTrivialnegation().

#define HEUR_TIMING SCIP_HEURTIMING_BEFORENODE

Definition at line 37 of file heur_trivialnegation.c.

Referenced by SCIPincludeHeurTrivialnegation().

#define HEUR_USESSUBSCIP FALSE

does the heuristic use a secondary SCIP instance?

Definition at line 38 of file heur_trivialnegation.c.

Referenced by SCIPincludeHeurTrivialnegation().

Function Documentation

static SCIP_DECL_HEURCOPY ( heurCopyTrivialnegation )

static

copy method for primal heuristic plugins (called when SCIP copies plugins)

Definition at line 46 of file heur_trivialnegation.c.

References HEUR_NAME, NULL, SCIP_CALL, SCIP_OKAY, SCIPheurGetName(), and SCIPincludeHeurTrivialnegation().

static SCIP_DECL_HEUREXEC ( heurExecTrivialnegation )

static

execution method of primal heuristic

Definition at line 61 of file heur_trivialnegation.c.

References FALSE, NULL, SCIP_Bool, SCIP_CALL, SCIP_DIDNOTFIND, SCIP_DIDNOTRUN, SCIP_FOUNDSOL, SCIP_OKAY, SCIP_Real, SCIP_VARTYPE_BINARY, SCIPcreateSol(), SCIPdebug, SCIPdebugMessage, SCIPfreeSol(), SCIPgetCutoffbound(), SCIPgetNReoptRuns(), SCIPgetNVars(), SCIPgetReoptLastOptSol(), SCIPgetReoptOldObjCoef(), SCIPgetSolTransObj(), SCIPgetSolVal(), SCIPgetVars(), SCIPisFeasEQ(), SCIPisFeasLT(), SCIPisNegative(), SCIPisPositive(), SCIPisReoptEnabled(), SCIPisZero(), SCIPprintSol(), SCIPsetSolVal(), SCIPsolGetHeur(), SCIPtrySol(), SCIPvarGetName(), SCIPvarGetType(), SCIPvarIsActive(), and TRUE.

SCIP_RETCODE SCIPincludeHeurTrivialnegation ( SCIP * scip )

creates the trivialnegation primal heuristic and includes it in SCIP

Parameters

scip	SCIP data structure

Definition at line 224 of file heur_trivialnegation.c.

References HEUR_DESC, HEUR_DISPCHAR, HEUR_FREQ, HEUR_FREQOFS, HEUR_MAXDEPTH, HEUR_NAME, HEUR_PRIORITY, HEUR_TIMING, HEUR_USESSUBSCIP, NULL, SCIP_CALL, SCIP_OKAY, SCIPincludeHeurBasic(), and SCIPsetHeurCopy().

Referenced by SCIP_DECL_HEURCOPY(), and SCIPincludeDefaultPlugins().