Struct ConstantScalar 

pub struct ConstantScalar { /* private fields */ }

Constant scalar.

Implementations

impl ConstantScalar

pub fn new(value: f64) -> Node

Creates new scalar constant expression node.

pub fn value(&self) -> f64

Gets value of constant.

pub fn zero() -> Node

Creates new scalar constant with value zero.

Trait Implementations

impl Display for ConstantScalar

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

Formats the value using the given formatter.

impl NodeBase for ConstantScalar

fn partial(&self, _arg: &Node) -> Node

Gets partial derivative of expression node with respect to argument node.

fn arguments(&self) -> Vec<&Node>

Gets arguments (children) of an expression node.

fn evaluate(&self, _var_values: &HashMap<&Node, f64>) -> f64

Evaluates expression for given variable values.