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dedicate-project / beast / 83ba6ee4-64d8-4300-bcbc-007a3bb86324

pending completion
83ba6ee4-64d8-4300-bcbc-007a3bb86324

Pull #9

circleci

fairlight1337
Large block of Doxygen comments added
Pull Request #9: Adding pipeline applications

1197 of 1197 new or added lines in 21 files covered. (100.0%)

2837 of 3042 relevant lines covered (93.26%)

13117.4 hits per line

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97.62
/src/evaluators/random_serial_data_passthrough_evaluator.cpp
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#include <beast/evaluators/random_serial_data_passthrough_evaluator.hpp>
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// Standard
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#include <limits>
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#include <random>
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// BEAST
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#include <beast/cpu_virtual_machine.hpp>
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namespace beast {
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RandomSerialDataPassthroughEvaluator::RandomSerialDataPassthroughEvaluator(uint32_t data_count,
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                                                                           uint32_t repeats,
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                                                                           uint32_t max_steps)
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    : data_count_{data_count}, repeats_{repeats}, max_steps_{max_steps} {}
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double RandomSerialDataPassthroughEvaluator::evaluate(const VmSession& session) {
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  std::random_device random_device;
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  std::mt19937 mersenne_twister(random_device());
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  std::uniform_int_distribution<> distribution(std::numeric_limits<int32_t>::min(),
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                                               std::numeric_limits<int32_t>::max());
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  double worst_result = 1.0;
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  for (uint32_t repeat = 0; repeat < repeats_; ++repeat) {
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    std::vector<int32_t> values;
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    for (uint32_t idx = 0; idx < data_count_; ++idx) {
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      values.push_back(distribution(mersenne_twister));
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    }
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    // Make a copy because we're changing the state of the session.
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    VmSession work_session = session;
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    uint32_t correct_forwards = 0;
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    work_session.setVariableBehavior(0, beast::VmSession::VariableIoBehavior::Input);
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    work_session.setVariableBehavior(1, beast::VmSession::VariableIoBehavior::Output);
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    work_session.setVariableValue(0, true, values[0]);
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    try {
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      correct_forwards = runProgram(work_session, values);
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    } catch (...) {
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      return 0.0;
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    }
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    const double result =
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        std::min(1.0,
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                 (static_cast<double>(correct_forwards) / static_cast<double>(values.size())) +
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                     (correct_forwards == 0 ? static_cast<double>(values.size()) * 0.1 : 0.0));
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    worst_result = std::min(worst_result, result);
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  }
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  return worst_result;
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}
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uint32_t
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RandomSerialDataPassthroughEvaluator::runProgram(VmSession& work_session,
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                                                 const std::vector<int32_t>& values) const {
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  beast::CpuVirtualMachine virtual_machine;
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  virtual_machine.setSilent(true);
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  uint32_t value_index = 0;
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  uint32_t step_count = 0;
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  uint32_t correct_forwards = 0;
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  do {
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    if (work_session.hasOutputDataAvailable(1, true)) {
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      if (work_session.getVariableValue(1, true) == values[value_index]) {
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        correct_forwards++;
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      }
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      value_index++;
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      if (value_index < values.size()) {
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        work_session.setVariableValue(0, true, values[value_index]);
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      }
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    }
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    step_count++;
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  } while (value_index < values.size() && step_count < max_steps_ &&
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           virtual_machine.step(work_session, false));
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  return correct_forwards;
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}
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} // namespace beast
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