#include "benchmark/benchmark.h"
#include <iostream>

using namespace benchmark;

int n = 1;

void func(State &st, int i1) {
  std::cerr << i1 << std::endl;
  for (auto _ : st) {
    for (int i = 0; i < i1; ++i) {
      DoNotOptimize(i);
    }
  }
}

BENCHMARK_CAPTURE(func, static_by_reference,
                  n); // This works like by reference

int main(int argc, char **argv) {
  ::benchmark::Initialize(&argc, argv);
  if (::benchmark::ReportUnrecognizedArguments(argc, argv))
    return 1;
  n = 10;
  benchmark::RegisterBenchmark("runtime_by_value", &func,
                               n); // this works like by value
  n = 100;
  ::benchmark::RunSpecifiedBenchmarks();
}
/*
OUTPUT:
2018-01-11 12:14:54
Run on (8 X 3500 MHz CPU s)
CPU Caches:
  L1 Data 32K (x4)
  L1 Instruction 32K (x4)
  L2 Unified 256K (x4)
  L3 Unified 6144K (x1)
***WARNING*** CPU scaling is enabled, the benchmark real time measurements may be noisy and will incur extra overhead.
***WARNING*** Library was built as DEBUG. Timings may be affected.
100
100
100
100
100
100
100
100
----------------------------------------------------------------
Benchmark                         Time           CPU Iterations
----------------------------------------------------------------
func/static_by_reference        163 ns        163 ns    3829134
10
10
10
10
10
10
10
10
10
runtime_by_value
*/