dual-math2: Math2 group generic for dual numbers

In nabla: Exact Derivatives via Automatic Differentiation

Math2 group generic for dual numbers

Description

Implements round and signif for dual numbers. These are piecewise constant functions, so the derivative is zero almost everywhere.

Usage

## S4 method for signature 'dualr'
Math2(x, digits)

Arguments

x	A dual number.
digits	Integer; number of digits for rounding.

Value

A dual with the rounded value and zero derivative.

Examples

x <- dual_variable(3.14159)
value(round(x, 2))
deriv(round(x, 2))

nabla documentation built on Feb. 11, 2026, 1:06 a.m.