58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
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#include <cstdint>
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#include <iostream>
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#include "dpf.hpp"
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/// Pre-assign full-domain expand, then rotate after the input wildcard opens.
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int main()
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{
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using input_type = std::uint8_t;
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using output_type = std::uint64_t;
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const output_type beta = 7;
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const input_type alpha = 42;
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const input_type from = 40;
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const input_type to = 50;
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auto [k0, k1] = dpf::make_dpf(dpf::wildcard_value<input_type>{}, beta);
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//! [defer-eval]
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auto buf0 = dpf::make_output_buffer_for_full(k0);
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auto buf1 = dpf::make_output_buffer_for_full(k1);
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auto deferred0 = dpf::defer_eval_interval(k0, from, to, buf0);
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auto deferred1 = dpf::defer_eval_interval(k1, from, to, buf1);
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// Parties open mask - alpha into offset_x (local demo of the exchange).
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const input_type a0 = 0x12;
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const input_type a1 = static_cast<input_type>(alpha - a0);
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const auto sh0 = k0.offset_x.compute_and_get_share(a0);
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const auto sh1 = k1.offset_x.compute_and_get_share(a1);
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k0.offset_x.reconstruct(sh1);
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k1.offset_x.reconstruct(sh0);
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auto view0 = deferred0.get();
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auto view1 = deferred1.get();
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//! [defer-eval]
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auto it0 = std::begin(view0);
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auto it1 = std::begin(view1);
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for (input_type x = from; x <= to; ++x, ++it0, ++it1)
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{
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const output_type got = dpf::reconstruct(*it0, *it1);
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const output_type expect = (x == alpha) ? beta : 0;
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if (got != expect)
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{
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std::cerr << "defer_eval\n";
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return 1;
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}
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}
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if (it0 != std::end(view0) || it1 != std::end(view1))
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{
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std::cerr << "defer_eval length\n";
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return 1;
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}
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std::cout << dpf::reconstruct(*std::begin(view0), *std::begin(view1))
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<< "\n";
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return 0;
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}
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