Struct splr::types::Lit

pub struct Lit { /* fields omitted */ }

Literal encoded on u32 as:

• the literal corresponding to a positive occurrence of *variable n is 2 * n and
• that for the negative one is 2 * n + 1.

Examples

use splr::types::*;
assert_eq!(2usize, Lit::from(-1i32).into());
assert_eq!(3usize, Lit::from( 1i32).into());
assert_eq!(4usize, Lit::from(-2i32).into());
assert_eq!(5usize, Lit::from( 2i32).into());
assert_eq!( 1i32, Lit::from( 1i32).into());
assert_eq!(-1i32, Lit::from(-1i32).into());
assert_eq!( 2i32, Lit::from( 2i32).into());
assert_eq!(-2i32, Lit::from(-2i32).into());

Trait Implementations

impl Clone for Lit

fn clone(&self) -> Lit

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for Lit

impl Debug for Lit

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

Formats the value using the given formatter.

impl Default for Lit

fn default() -> Lit

Returns the “default value” for a type.

impl Display for Lit

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

Formats the value using the given formatter.

impl Eq for Lit

impl From<(usize, Option<bool>)> for Lit

fn from((vi, ob): (VarId, Option<bool>)) -> Self

Performs the conversion.

impl From<(usize, bool)> for Lit

fn from((vi, b): (VarId, bool)) -> Self

Performs the conversion.

impl From<ClauseId> for Lit

fn from(cid: ClauseId) -> Self

Performs the conversion.

impl From<Lit> for ClauseId

fn from(l: Lit) -> ClauseId

Performs the conversion.

impl From<i32> for Lit

fn from(x: i32) -> Self

Performs the conversion.

impl From<usize> for Lit

fn from(l: usize) -> Self

Performs the conversion.

impl Hash for Lit

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl Index<&'_ Lit> for Eliminator

type Output = LitOccurs

The returned type after indexing.

fn index(&self, l: &Lit) -> &Self::Output

Performs the indexing (container[index]) operation.

impl Index<Lit> for Eliminator

type Output = LitOccurs

The returned type after indexing.

fn index(&self, l: Lit) -> &Self::Output

Performs the indexing (container[index]) operation.

impl IndexMut<&'_ Lit> for Eliminator

fn index_mut(&mut self, l: &Lit) -> &mut Self::Output

Performs the mutable indexing (container[index]) operation.

impl IndexMut<Lit> for Eliminator

fn index_mut(&mut self, l: Lit) -> &mut Self::Output

Performs the mutable indexing (container[index]) operation.

impl LitIF for Lit

Examples

use splr::types::*;
assert_eq!(Lit::from(1i32), Lit::from_assign(1 as VarId, true));
assert_eq!(Lit::from(2i32), Lit::from_assign(2 as VarId, true));
assert_eq!(1, Lit::from_assign(1, true).vi());
assert_eq!(1, Lit::from_assign(1, false).vi());
assert_eq!(2, Lit::from_assign(2, true).vi());
assert_eq!(2, Lit::from_assign(2, false).vi());
assert_eq!(Lit::from( 1i32), !Lit::from(-1i32));
assert_eq!(Lit::from(-1i32), !Lit::from( 1i32));
assert_eq!(Lit::from( 2i32), !Lit::from(-2i32));
assert_eq!(Lit::from(-2i32), !Lit::from( 2i32));

fn as_bool(&self) -> bool

convert to bool

fn from_assign(vi: VarId, p: bool) -> Lit

convert VarId to Lit. It returns a positive literal if p is TRUE or BOTTOM.

fn vi(self) -> VarId

convert to var index.

fn is_none(&self) -> bool

return true if it is a valid literal, namely non-zero.

impl Not for Lit

type Output = Lit

The resulting type after applying the ! operator.

fn not(self) -> Self

Performs the unary ! operation.

impl Ord for Lit

fn cmp(&self, other: &Lit) -> Ordering

This method returns an Ordering between self and other.

#[must_use]pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<Lit> for Lit

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<Lit> for Lit

fn partial_cmp(&self, other: &Lit) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use]pub fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use]pub fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use]pub fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]pub fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralEq for Lit

impl StructuralPartialEq for Lit