Module expr 

Expression AST, evaluation, substitution, and operator overloading.

Enums

Expr

A symbolic expression AST.

MathFn

Built-in mathematical functions.

Functions

abs

|expr|

constant

Create a constant expression.

cos

cos(expr)

e

The constant e.

exp

exp(expr)

ln

ln(expr)

one

The multiplicative identity.

pi

The constant pi.

sin

sin(expr)

sqrt

sqrt(expr)

tan

tan(expr)

var

Create a variable expression.

zero

The additive identity.