libdpf/examples/evaluation/eval_full.cpp

#include <cstdint>
#include <iostream>
#include <limits>

#include "dpf.hpp"

/// Every input of the domain, from `numeric_limits<Input>::min()` through
/// `max()`. Same shape as `eval_interval`.
int main()
{
    const std::uint8_t alpha = 42;
    const std::uint64_t beta = 7;
    auto [k0, k1] = dpf::make_dpf(alpha, beta);

    //! [eval-full]
    auto [buf0, iter0] = dpf::eval_full(k0);
    auto [buf1, iter1] = dpf::eval_full(k1);

    auto it0 = std::begin(iter0);
    auto it1 = std::begin(iter1);
    for (int x = std::numeric_limits<std::uint8_t>::min();
         x <= std::numeric_limits<std::uint8_t>::max();
         ++x, ++it0, ++it1)
    {
        std::uint64_t got = dpf::reconstruct(*it0, *it1);
        std::uint64_t expect = (static_cast<std::uint8_t>(x) == alpha) ? beta : 0;
        if (got != expect)
        {
            std::cerr << "eval_full\n";
            return 1;
        }
    }
    //! [eval-full]
    if (it0 != std::end(iter0) || it1 != std::end(iter1))
    {
        std::cerr << "eval_full length\n";
        return 1;
    }

    std::cout << beta << "\n";
    (void)buf0;
    (void)buf1;
    return 0;
}