Struct Lit 

pub struct Lit(/* private fields */);

A literal: a variable plus a sign, packed as var << 1 | negated. Packing keeps the watch lists and the trail cache-dense, the way every fast solver stores them.

Implementations

impl Lit

pub fn pos(v: Var) -> Lit

The positive literal +v.

pub fn neg(v: Var) -> Lit

The negative literal ¬v.

pub fn new(v: Var, positive: bool) -> Lit

Build from a variable and a sign (true ⇒ positive).

pub fn var(self) -> Var

The underlying variable.

pub fn is_positive(self) -> bool

Whether this is a positive literal.

pub fn negated(self) -> Lit

The complementary literal.

Trait Implementations

impl Clone for Lit

fn clone(&self) -> Lit

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Lit

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for Lit

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Lit

fn eq(&self, other: &Lit) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Lit

impl Eq for Lit

impl StructuralPartialEq for Lit