element.cc File Reference

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Classes
class	IfThenElseCt

Namespaces
namespace	operations_research
	Collection of objects used to extend the Constraint Solver library.

Macros
#define	UPDATE_BASE_ELEMENT_INDEX_BOUNDS(test)
#define	UPDATE_RMQ_BASE_ELEMENT_INDEX_BOUNDS(test)
#define	UPDATE_ELEMENT_INDEX_BOUNDS(test)

Functions
	ABSL_FLAG (bool, cp_disable_element_cache, true, "If true, caching for IntElement is disabled.")
void	LinkVarExpr (Solver *const s, IntExpr *const expr, IntVar *const var)

Macro Definition Documentation

UPDATE_BASE_ELEMENT_INDEX_BOUNDS

#define UPDATE_BASE_ELEMENT_INDEX_BOUNDS

(

test

)

Value:

  const int64_t emin = ExprMin();              \
  const int64_t emax = ExprMax();              \
  int64_t nmin = emin;                         \
  int64_t value = ElementValue(nmin);          \
  while (nmin < emax && test) {                \
    nmin++;                                    \
    value = ElementValue(nmin);                \
  }                                            \
  if (nmin == emax && test) {                  \
    solver()->Fail();                          \
  }                                            \
  int64_t nmax = emax;                         \
  value = ElementValue(nmax);                  \
  while (nmax >= nmin && test) {               \
    nmax--;                                    \
    value = ElementValue(nmax);                \
  }                                            \
  expr_->SetRange(nmin, nmax);

Definition at line 129 of file element.cc.

UPDATE_ELEMENT_INDEX_BOUNDS

#define UPDATE_ELEMENT_INDEX_BOUNDS

(

test

)

Definition at line 988 of file element.cc.

UPDATE_RMQ_BASE_ELEMENT_INDEX_BOUNDS

#define UPDATE_RMQ_BASE_ELEMENT_INDEX_BOUNDS

(

test

)

Value:

  const std::vector<int64_t>& values = min_rmq_.array(); \
  int64_t index_min = IndexMin();                        \
  int64_t index_max = IndexMax();                        \
  int64_t value = values[index_min];                     \
  while (index_min < index_max && (test)) {              \
    index_min++;                                         \
    value = values[index_min];                           \
  }                                                      \
  if (index_min == index_max && (test)) {                \
    solver()->Fail();                                    \
  }                                                      \
  value = values[index_max];                             \
  while (index_max >= index_min && (test)) {             \
    index_max--;                                         \
    value = values[index_max];                           \
  }                                                      \
  index_->SetRange(index_min, index_max);

Definition at line 423 of file element.cc.

Function Documentation

ABSL_FLAG()

ABSL_FLAG	(	bool	,
		cp_disable_element_cache	,
		true	,
		"If	true,
		caching for IntElement is disabled."
	)

Variable Documentation

expr_

IntVar* const expr_

protected

Definition at line 87 of file element.cc.