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Functions
Simple relation constraints over integer variables
Functionality by programming task » Programming models » Using integer variables and constraints

Functions

void Gecode::rel (Home home, IntVar x0, IntRelType irt, IntVar x1, IntConLevel icl=ICL_DEF)
 Post propagator for $ x_0 \sim_{irt} x_1$. More...
 
void Gecode::rel (Home home, const IntVarArgs &x, IntRelType irt, IntVar y, IntConLevel icl=ICL_DEF)
 Post propagator for $ x_i \sim_{irt} y $ for all $0\leq i<|x|$. More...
 
void Gecode::rel (Home home, IntVar x, IntRelType irt, int c, IntConLevel icl=ICL_DEF)
 Propagates $ x \sim_{irt} c$. More...
 
void Gecode::rel (Home home, const IntVarArgs &x, IntRelType irt, int c, IntConLevel icl=ICL_DEF)
 Propagates $ x_i \sim_{irt} c $ for all $0\leq i<|x|$. More...
 
void Gecode::rel (Home home, IntVar x0, IntRelType irt, IntVar x1, Reify r, IntConLevel icl=ICL_DEF)
 Post propagator for $ (x_0 \sim_{irt} x_1)\equiv r$. More...
 
void Gecode::rel (Home home, IntVar x, IntRelType irt, int c, Reify r, IntConLevel icl=ICL_DEF)
 Post propagator for $(x \sim_{irt} c)\equiv r$. More...
 
void Gecode::rel (Home home, const IntVarArgs &x, IntRelType irt, IntConLevel icl=ICL_DEF)
 Post propagator for relation among elements in x. More...
 
void Gecode::rel (Home home, const IntVarArgs &x, IntRelType irt, const IntVarArgs &y, IntConLevel icl=ICL_DEF)
 Post propagator for relation between x and y. More...
 

Detailed Description

Function Documentation

◆ rel() [1/8]

void Gecode::rel ( Home  home,
IntVar  x0,
IntRelType  irt,
IntVar  x1,
IntConLevel  icl = ICL_DEF 
)

Post propagator for $ x_0 \sim_{irt} x_1$.

Supports both bounds (icl = ICL_BND) and domain consistency (icl = ICL_DOM, default).

Definition at line 104 of file rel.cpp.

◆ rel() [2/8]

void Gecode::rel ( Home  home,
const IntVarArgs &  x,
IntRelType  irt,
IntVar  y,
IntConLevel  icl = ICL_DEF 
)

Post propagator for $ x_i \sim_{irt} y $ for all $0\leq i<|x|$.

Supports both bounds (icl = ICL_BND) and domain consistency (icl = ICL_DOM, default).

Definition at line 130 of file rel.cpp.

◆ rel() [3/8]

void Gecode::rel ( Home  home,
IntVar  x0,
IntRelType  irt,
int  n,
IntConLevel   
)

Propagates $ x \sim_{irt} c$.

Definition at line 48 of file rel.cpp.

◆ rel() [4/8]

void Gecode::rel ( Home  home,
const IntVarArgs &  x,
IntRelType  irt,
int  n,
IntConLevel   
)

Propagates $ x_i \sim_{irt} c $ for all $0\leq i<|x|$.

Definition at line 64 of file rel.cpp.

◆ rel() [5/8]

void Gecode::rel ( Home  home,
IntVar  x0,
IntRelType  irt,
IntVar  x1,
Reify  r,
IntConLevel  icl = ICL_DEF 
)

Post propagator for $ (x_0 \sim_{irt} x_1)\equiv r$.

Supports both bounds (icl = ICL_BND) and domain consistency (icl = ICL_DOM, default).

Definition at line 179 of file rel.cpp.

◆ rel() [6/8]

void Gecode::rel ( Home  home,
IntVar  x,
IntRelType  irt,
int  c,
Reify  r,
IntConLevel  icl = ICL_DEF 
)

Post propagator for $(x \sim_{irt} c)\equiv r$.

Supports both bounds (icl = ICL_BND) and domain consistency (icl = ICL_DOM, default).

Definition at line 303 of file rel.cpp.

◆ rel() [7/8]

void Gecode::rel ( Home  home,
const IntVarArgs &  x,
IntRelType  irt,
IntConLevel  icl = ICL_DEF 
)

Post propagator for relation among elements in x.

States that the elements of x are in the following relation:

  • if r = IRT_LE, r = IRT_LQ, r = IRT_GR, or r = IRT_GQ, then the elements of x are ordered with respect to r. Supports domain consistency (icl = ICL_DOM, default).
  • if r = IRT_EQ, then all elements of x must be equal. Supports both bounds (icl = ICL_BND) and domain consistency (icl = ICL_DOM, default).
  • if r = IRT_NQ, then not all elements of x must be equal. Supports domain consistency (icl = ICL_DOM, default).

Definition at line 428 of file rel.cpp.

◆ rel() [8/8]

void Gecode::rel ( Home  home,
const IntVarArgs &  x,
IntRelType  irt,
const IntVarArgs &  y,
IntConLevel  icl = ICL_DEF 
)

Post propagator for relation between x and y.

Note that for the inequality relations this corresponds to the lexical order between x and y.

Supports both bounds (icl = ICL_BND) and domain consistency (icl = ICL_DOM, default).

Note that the constraint is also defined if x and y are of different size. That means that if x and y are of different size, then if r = IRT_EQ the constraint is false and if r = IRT_NQ the constraint is subsumed.

Definition at line 485 of file rel.cpp.