SCIP_ConsNonlinear_BilinTerm Struct Reference

Detailed Description

bilinear term structure

This can represent a product which

• explicitly exists in the problem and is under- and/or overestimated by a single auxiliary variable stored as var in the union aux (case nauxexprs = 0) or
• is involved in bilinear relations implicitly given by linear constraints with binary variables, and is under- and/or overestimated by linear expression(s) stored as exprs in the union aux (case nauxexprs > 0).

An explicitly existing product can also be involved in implicit relations, then it will be stored as in the second case.

Definition at line 78 of file cons_nonlinear.h.

#include <cons_nonlinear.h>

Data Fields
SCIP_VAR *	x
SCIP_VAR *	y
union {
SCIP_CONSNONLINEAR_AUXEXPR **   exprs
SCIP_VAR *   var
}	aux
int	nauxexprs
int	auxexprssize
int	nlockspos
int	nlocksneg
SCIP_Bool	existing

Field Documentation

x

SCIP_VAR* SCIP_ConsNonlinear_BilinTerm::x

first variable

Definition at line 80 of file cons_nonlinear.h.

Referenced by bilinearTermsInsertEntry(), SCIP_DECL_HASHKEYEQ(), SCIP_DECL_HASHKEYVAL(), SCIPgetBilinTermIdxNonlinear(), and SCIPinsertBilinearTermImplicitNonlinear().

y

SCIP_VAR* SCIP_ConsNonlinear_BilinTerm::y

second variable

Definition at line 81 of file cons_nonlinear.h.

Referenced by bilinearTermsInsertEntry(), SCIP_DECL_HASHKEYEQ(), SCIP_DECL_HASHKEYVAL(), SCIPgetBilinTermIdxNonlinear(), and SCIPinsertBilinearTermImplicitNonlinear().

exprs

SCIP_CONSNONLINEAR_AUXEXPR** SCIP_ConsNonlinear_BilinTerm::exprs

auxiliary expressions for the implicit product of x and y

Definition at line 84 of file cons_nonlinear.h.

Referenced by addRltTerm(), bilinearTermsInsertEntry(), bilinTermAddAuxExpr(), createSepaData(), getBestEstimators(), markRowsXj(), SCIPinsertBilinearTermImplicitNonlinear(), and separateMcCormickImplicit().

var

SCIP_VAR* SCIP_ConsNonlinear_BilinTerm::var

auxiliary variable for the explicit product of x and y

Definition at line 85 of file cons_nonlinear.h.

Referenced by addRltTerm(), bilinearTermsInsertEntry(), createSepaData(), isAcceptableRow(), markRowsXj(), SCIPinsertBilinearTermExistingNonlinear(), and SCIPinsertBilinearTermImplicitNonlinear().

aux

union { ... } SCIP_ConsNonlinear_BilinTerm::aux

Referenced by addRltTerm(), bilinearTermsInsertEntry(), bilinTermAddAuxExpr(), createSepaData(), isAcceptableRow(), SCIPinsertBilinearTermExistingNonlinear(), SCIPinsertBilinearTermImplicitNonlinear(), and separateMcCormickImplicit().

nauxexprs

int SCIP_ConsNonlinear_BilinTerm::nauxexprs

number of aux.exprs (0 for products without implicit relations)

Definition at line 87 of file cons_nonlinear.h.

Referenced by bilinearTermsInsertEntry(), bilinTermAddAuxExpr(), createSepaData(), getBestEstimators(), isAcceptableRow(), SCIPinsertBilinearTermExistingNonlinear(), and SCIPinsertBilinearTermImplicitNonlinear().

auxexprssize

int SCIP_ConsNonlinear_BilinTerm::auxexprssize

size of the aux.exprs array

Definition at line 88 of file cons_nonlinear.h.

Referenced by bilinearTermsInsertEntry(), and bilinTermAddAuxExpr().

nlockspos

int SCIP_ConsNonlinear_BilinTerm::nlockspos

number of positive expression locks

Definition at line 89 of file cons_nonlinear.h.

Referenced by bilinearTermsInsertEntry(), and SCIPinsertBilinearTermImplicitNonlinear().

nlocksneg

int SCIP_ConsNonlinear_BilinTerm::nlocksneg

number of negative expression locks

Definition at line 90 of file cons_nonlinear.h.

Referenced by bilinearTermsInsertEntry(), and SCIPinsertBilinearTermImplicitNonlinear().

existing

SCIP_Bool SCIP_ConsNonlinear_BilinTerm::existing

does the product exist explicitly in the problem?

Definition at line 91 of file cons_nonlinear.h.

Referenced by bilinearTermsInsertEntry(), markRowsXj(), and SCIPinsertBilinearTermImplicitNonlinear().