dual_constant_n: Create a constant dual for n-th order differentiation

In nabla: Exact Derivatives via Automatic Differentiation

Create a constant dual for n-th order differentiation

Description

Wraps a numeric value as a nested dual with all derivative components zero, representing a constant with respect to the differentiation variable at nesting depth n.

Usage

dual_constant_n(x, order)

Arguments

x	A numeric value.
order	A non-negative integer specifying the nesting depth.

Value

A (possibly nested) dual number with zero derivatives.

Examples

k <- dual_constant_n(5, order = 3)
deriv_n(k, 1)
deriv_n(k, 2)
deriv_n(k, 3)

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