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

set_union.cpp

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Set Union: Example and Test

# include <cppad/utility/set_union.hpp>

bool set_union(void)
{   bool ok = true;

    // create empty sets
    std::set<size_t> left, right, result;

    // set left = {1, 2}
    left.insert(1);
    left.insert(2);

    // set right = {2, 3}
    right.insert(2);
    right.insert(3);

    // set result = {1, 2} U {2, 3}
    result = CppAD::set_union(left, right);

    // expected result
    size_t check_vec[] = {1, 2, 3};
    std::set<size_t> check_set(check_vec, check_vec + 3);

    // check result
    ok &= result == check_set;

    return ok;
}