Crate cnfgen

The library to generate CNF (Conjunctive Normal Form) formulas.

This library provides simple CNF writer, structures to create boolean formula from boolean expressions and integer expressions. The module writer provides basic types, traits to handle clauses and literals, simple the CNF writer to write same CNF formulas. The boolexpr module provides structure to construct boolean expressions. The intexpr and dynintexpr modules provides structure and traits to construct integer expressions.

Same construction of expressions can be done in natural way by using operators or methods. The object called ExprCreator holds all expressions. The main structures that allow construct expressions are expression nodes: BoolExprNode, IntExprNode and DynIntExprNode. BoolExprNode allow to construct boolean expressions. IntExprNode and DynIntExprNode allow to construct integer expressions or multiple bit expressions.

Samples of usage of these modules can be found in documentation of these modules.

Typical usage of this library is: construction boolean expression and write it by using method write from an expression object. The writer module can be used to write ‘raw’ CNF formulas that can be generated by other software.

Re-exports

• pub use writer::Literal;
• pub use writer::VarLit;
• pub use generic_array;

Modules

• boolexpr
  The module to generate CNF clauses from boolean expressions.
• boolexpr_creator
  The module to generate CNF clauses from boolean expressions.
• dynintexpr
  The module to generate CNF clauses from dynamic integer expressions.
• intexpr
  The module to generate CNF clauses from integer expressions.
• writer
  The module to write CNF from clauses.