CLitPoolElement Class Reference

#include <xchaff_base.h>

List of all members.

Public Member Functions

• CLitPoolElement (void)
• CLitPoolElement (int val)
• int & val (void)
• int s_var (void)
• int var_index (void)
• bool var_sign (void)
• void set (int s_var)
• void set (int v, int s)
• int direction (void)
• bool is_ht (void)
• void unset_ht (void)
• void set_ht (int dir)
• bool is_literal (void)
• void set_clause_index (int cl_idx)
• int get_clause_index (void)
• int find_clause_idx (void)
• void dump (ostream &os=cout)

Protected Attributes

• int _val

Friends

• ostream & operator<< (ostream &os, CLitPoolElement &l)

---

Detailed Description

Class**********************************************************************

Synopsis [Definition of a literal]

Description [A literal is a variable with phase. Two thing determing a lteral: it's "sign", and the variable index. One bit is used to mark it's sign. 0->positive, 1->negative.

For every clause with literal count larger than 1, there are two special literals which are designated ht_literal (stands for head/tail literal to imitate SATO) It is specially marked with 2 bits: 00->not ht; dir = 1; or dir = -1; 10 is not valid. Each literal is represented by a 32 bit integer, with one bit representing it's phase and 2 bits indicate h/t property.

All the literals are collected in a storage space called literal pool. An element in a literal pool can be a literal or special spacing element to indicate the termination of a clause. The spacing element has negative value of the clause index.]

SeeAlso [CDatabase, CClause]

Definition at line 81 of file xchaff_base.h.

---

Constructor & Destructor Documentation

CLitPoolElement::CLitPoolElement

(

void

)

[inline]

Definition at line 87 of file xchaff_base.h.

CLitPoolElement::CLitPoolElement

(

int

val

)

[inline]

Definition at line 90 of file xchaff_base.h.

---

Member Function Documentation

int& CLitPoolElement::val

(

void

)

[inline]

Definition at line 92 of file xchaff_base.h.

Referenced by CDatabase::compact_lit_pool(), CDatabase::lit_pool_push_back(), CDatabase::mark_clause_deleted(), CSolver::set_var_value_not_current_dl(), and CSolver::set_var_value_with_current_dl().

int CLitPoolElement::s_var

(

void

)

[inline]

Definition at line 95 of file xchaff_base.h.

Referenced by CDatabase::find_unit_literal(), Xchaff::GetClauseLits(), CSolver::set_var_value_not_current_dl(), and CSolver::set_var_value_with_current_dl().

int CLitPoolElement::var_index

(

void

)

[inline]

Definition at line 98 of file xchaff_base.h.

Referenced by CSolver::add_clause(), CDatabase::compact_lit_pool(), CDatabase::detail_dump_cl(), CDatabase::literal_value(), CDatabase::mark_clause_deleted(), CSolver::set_var_value_not_current_dl(), and CSolver::set_var_value_with_current_dl().

bool CLitPoolElement::var_sign

(

void

)

[inline]

Definition at line 101 of file xchaff_base.h.

Referenced by CSolver::add_clause(), CDatabase::compact_lit_pool(), CDatabase::literal_value(), and CDatabase::mark_clause_deleted().

void CLitPoolElement::set

(

int

s_var

)

[inline]

Definition at line 104 of file xchaff_base.h.

void CLitPoolElement::set	(	int	v,
		int	s
	)		[inline]

Definition at line 107 of file xchaff_base.h.

int CLitPoolElement::direction

(

void

)

[inline]

Definition at line 111 of file xchaff_base.h.

Referenced by CSolver::set_var_value_not_current_dl(), and CSolver::set_var_value_with_current_dl().

bool CLitPoolElement::is_ht

(

void

)

[inline]

Definition at line 114 of file xchaff_base.h.

Referenced by CDatabase::compact_lit_pool().

void CLitPoolElement::unset_ht

(

void

)

[inline]

Definition at line 117 of file xchaff_base.h.

Referenced by CSolver::set_var_value_not_current_dl(), and CSolver::set_var_value_with_current_dl().

void CLitPoolElement::set_ht

(

int

dir

)

[inline]

Definition at line 120 of file xchaff_base.h.

Referenced by CSolver::add_clause().

bool CLitPoolElement::is_literal

(

void

)

[inline]

Definition at line 125 of file xchaff_base.h.

Referenced by find_clause_idx().

void CLitPoolElement::set_clause_index

(

int

cl_idx

)

[inline]

Definition at line 128 of file xchaff_base.h.

int CLitPoolElement::get_clause_index

(

void

)

[inline]

Definition at line 131 of file xchaff_base.h.

Referenced by find_clause_idx().

int CLitPoolElement::find_clause_idx

(

void

)

[inline]

Definition at line 135 of file xchaff_base.h.

References get_clause_index(), and is_literal().

void CLitPoolElement::dump

(

ostream &

os = cout

)

[inline]

Definition at line 141 of file xchaff_base.h.

---

Friends And Related Function Documentation

ostream& operator<<	(	ostream &	os,
		CLitPoolElement &	l
	)		[friend]

Definition at line 145 of file xchaff_base.h.

---

Member Data Documentation

int CLitPoolElement::_val [protected]

Definition at line 84 of file xchaff_base.h.

---

The documentation for this class was generated from the following file:

• xchaff_base.h