heyoka.expression

class heyoka.expression

Class to represent symbolic expressions.

Note

A tutorial explaining the use of this class is available.

This is the main class used to represent mathematical expressions in heyoka. It is a union of several node types:

• symbolic variables,

• mathematical constants,

• runtime parameters,

• n-ary functions.

Expressions can be created in a variety of ways, and after construction they can be combined via arithmetic operators and mathematical functions to form new expressions of arbitrary complexity.

Methods

__init__(self[, x])

Constructor.

__init__(self, x: int | numpy.single | float | numpy.longdouble | str = 0.)

Constructor.

This constructor will initialise the expression either as a numerical constant (if x is of a numerical type) or as a variable (if x is a str).

Parameters:

x – the construction argument.