\(\newcommand{\W}[1]{ \; #1 \; }\) \(\newcommand{\R}[1]{ {\rm #1} }\) \(\newcommand{\B}[1]{ {\bf #1} }\) \(\newcommand{\D}[2]{ \frac{\partial #1}{\partial #2} }\) \(\newcommand{\DD}[3]{ \frac{\partial^2 #1}{\partial #2 \partial #3} }\) \(\newcommand{\Dpow}[2]{ \frac{\partial^{#1}}{\partial {#2}^{#1}} }\) \(\newcommand{\dpow}[2]{ \frac{ {\rm d}^{#1}}{{\rm d}\, {#2}^{#1}} }\)

ad_assign.cpp

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AD Assignment: Example and Test

# include <cppad/cppad.hpp>

bool ad_assign(void)
{   bool ok = true;   // initialize test result flag
    using CppAD::AD;  // so can use AD in place of CppAD::AD

    // assignment to base value
    AD<double> a;
    a = 1.;
    ok &= a == 1.;

    // assignment to a value that converts to the base type
    a = 2;
    ok &= a == 2.;

    // assignment to an AD<Base>
    AD<double> b(3.);
    a = b;
    ok &= a == 3.;

    // assignment to an VecAD<Base> element
    CppAD::VecAD<double> v(1);
    v[0] = 4.;
    a = v[0];
    ok &= a == 4.;

    return ok;
}