Function CONV_long_empty

test/benchmark/convolution.cpp:23–32

BENCHMARK(CONV_same_length)->DenseRange(1, 100, 1);

void CONV_long_empty(benchmark::State& state) {
    vector<mint> a(state.range(0)), b;
    for (int i = 0; i < state.range(0); i++) {
        a[i] = i + 1234;
    }
    for (auto _ : state) {
        benchmark::DoNotOptimize(convolution(a, b));
        benchmark::DoNotOptimize(convolution(b, a));
    }
}
BENCHMARK(CONV_long_empty)->RangeMultiplier(2)->Range(1, 1 << 20);

BENCHMARK_MAIN();