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@(@\newcommand{\W}[1]{ \; #1 \; } \newcommand{\R}[1]{ {\rm #1} } \newcommand{\B}[1]{ {\bf #1} } \newcommand{\D}[2]{ \frac{\partial #1}{\partial #2} } \newcommand{\DD}[3]{ \frac{\partial^2 #1}{\partial #2 \partial #3} } \newcommand{\Dpow}[2]{ \frac{\partial^{#1}}{\partial {#2}^{#1}} } \newcommand{\dpow}[2]{ \frac{ {\rm d}^{#1}}{{\rm d}\, {#2}^{#1}} }@)@This is cppad-20221105 documentation. Here is a link to its current documentation .
AD Unary Plus Operator

Syntax
y = + x

Purpose
Performs the unary plus operation (the result y is equal to the operand x ).

x
The operand x has one of the following prototypes
    const AD<Base>               &x
    const VecAD<Base>::reference &x
y
The result y has type
    AD<Base> y
 It is equal to the operand x .

Operation Sequence
This is an AD of Base atomic operation and hence is part of the current AD of Base operation sequence .

Derivative
If @(@ f @)@ is a Base function , @[@ \D{[ + f(x) ]}{x} = \D{f(x)}{x} @]@

Example
The file unary_plus.cpp contains an example and test of this operation.
Input File: include/cppad/core/unary_plus.hpp