Enum UnaryOp 

pub enum UnaryOp {
    Neg,
    Pos,
    Factorial,
    Transpose,
}

Unary operators for mathematical expressions.

Represents operators that take a single operand.

Operator Semantics

• Neg: Arithmetic negation (-x). Applied as a prefix operator.
• Pos: Unary plus (+x). Applied as a prefix operator. Usually redundant but can be explicitly represented in the AST.
• Factorial: Factorial operator (n!). Applied as a postfix operator. Typically used with non-negative integers.
• Transpose: Matrix or vector transpose (Aᵀ or A'). Applied as a postfix operator. Used in linear algebra contexts.

Position

• Prefix operators: Neg, Pos - appear before the operand
• Postfix operators: Factorial, Transpose - appear after the operand

Examples

use mathlex::ast::{UnaryOp, Expression};

// Negation: -5
let neg_expr = Expression::Unary {
    op: UnaryOp::Neg,
    operand: Box::new(Expression::Integer(5)),
};

// Factorial: n!
let fact_expr = Expression::Unary {
    op: UnaryOp::Factorial,
    operand: Box::new(Expression::Variable("n".to_string())),
};

// Transpose: A'
let transpose_expr = Expression::Unary {
    op: UnaryOp::Transpose,
    operand: Box::new(Expression::Variable("A".to_string())),
};

Variants

Neg

Negation operator (-)

Pos

Positive sign operator (+)

Factorial

Factorial operator (!)

Transpose

Matrix/vector transpose operator (ᵀ or ’)

Trait Implementations

impl Clone for UnaryOp

fn clone(&self) -> UnaryOp

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UnaryOp

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

Formats the value using the given formatter.

impl Display for UnaryOp

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

Formats the value using the given formatter.

impl Hash for UnaryOp

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 UnaryOp

fn eq(&self, other: &UnaryOp) -> 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 UnaryOp

impl Eq for UnaryOp

impl StructuralPartialEq for UnaryOp