TrackingKernelParameters.h

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
#ifndef ALICEO2_ITSMFT_TRACKING_DETAIL_TRACKINGKERNELPARAMETERS_H_
#define ALICEO2_ITSMFT_TRACKING_DETAIL_TRACKINGKERNELPARAMETERS_H_
 
#include <cstddef>
#include <cstdint>
#include <type_traits>
 
#include "GPUCommonDef.h"
#include "GPUCommonMath.h"
 
namespace o2::itsmft::tracking
{
 
struct TrackingKernelParameters {
  float trackletMinPt{0.3f};
  float nSigmaCut{5.f};
  float maxChi2ClusterAttachment{60.f};
  float maxChi2NDF{30.f};
  float pvResolution{1.e-2f};
 
  GPUhdi() bool isValid() const noexcept
  {
    if (!o2::gpu::GPUCommonMath::Finite(trackletMinPt) || trackletMinPt <= 0.f ||
        !o2::gpu::GPUCommonMath::Finite(nSigmaCut) || nSigmaCut <= 0.f ||
        !o2::gpu::GPUCommonMath::Finite(maxChi2ClusterAttachment) || maxChi2ClusterAttachment <= 0.f ||
        !o2::gpu::GPUCommonMath::Finite(maxChi2NDF) || maxChi2NDF <= 0.f) {
      return false;
    }
    return o2::gpu::GPUCommonMath::Finite(pvResolution) && pvResolution >= 0.f;
  }
};
 
static_assert(std::is_standard_layout_v<TrackingKernelParameters>);
static_assert(std::is_trivially_copyable_v<TrackingKernelParameters>);
static_assert(sizeof(TrackingKernelParameters) == 20);
static_assert(alignof(TrackingKernelParameters) == alignof(float));
static_assert(offsetof(TrackingKernelParameters, trackletMinPt) == 0);
static_assert(offsetof(TrackingKernelParameters, nSigmaCut) == 4);
static_assert(offsetof(TrackingKernelParameters, maxChi2ClusterAttachment) == 8);
static_assert(offsetof(TrackingKernelParameters, maxChi2NDF) == 12);
static_assert(offsetof(TrackingKernelParameters, pvResolution) == 16);
 
} // namespace o2::itsmft::tracking
 
#endif /* ALICEO2_ITSMFT_TRACKING_DETAIL_TRACKINGKERNELPARAMETERS_H_ */