Struct WExpr 

#[non_exhaustive]
pub struct WExpr {
    pub konst: i64,
    pub terms: Vec<(u8, i64)>,
}

A linear expression over a rule’s width variables: konst + Σ coeff·var.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

konst: i64

The constant term.

terms: Vec<(u8, i64)>

(variable index, coefficient), sorted by variable, no zero coefficients.

Implementations

impl WExpr

pub fn konst(k: i64) -> Self

A constant.

pub fn var(v: u8) -> Self

One variable.

pub fn as_konst(&self) -> Option<i64>

Whether it has no variables.

pub fn eval(&self, vals: &[u16]) -> i64

The value under an assignment of the variables.

pub fn display<'a>(&'a self, names: &'a [String]) -> impl Display + 'a

Renders with the given variable names.

Trait Implementations

impl Clone for WExpr

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WExpr

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

Formats the value using the given formatter.

impl Default for WExpr

fn default() -> Self

Returns the “default value” for a type.

impl Eq for WExpr

impl Hash for WExpr

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 WExpr

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for WExpr