defaults.h

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// Copyright 2019-2023 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 RANS_INTERNAL_COMMON_DEFAULTS_H_
#define RANS_INTERNAL_COMMON_DEFAULTS_H_
 
#include <cstddef>
#include <cstdint>
#include <cstring>
 
#include "rANS/internal/common/defines.h"
 
#include <cstdint>
 
namespace o2::rans
{
enum class CoderTag : uint8_t { Compat,
                                SingleStream,
                                SSE,
                                AVX2 };
 
using count_t = uint32_t;
 
namespace defaults
{
 
#if defined(RANS_AVX2)
inline constexpr o2::rans::CoderTag DefaultTag = o2::rans::CoderTag::AVX2;
#elif defined(RANS_SSE_ONLY)
inline constexpr o2::rans::CoderTag DefaultTag = o2::rans::CoderTag::SSE;
#elif (defined(RANS_SINGLE_STREAM) && !defined(RANS_SIMD))
inline constexpr o2::rans::CoderTag DefaultTag = o2::rans::CoderTag::SingleStream;
#elif (defined(RANS_COMPAT) && !defined(RANS_SINGLE_STREAM) && !defined(RANS_SIMD))
inline constexpr o2::rans::CoderTag DefaultTag = o2::rans::CoderTag::Compat;
#else
#error your hardware or compiler settings do not support librans
#endif
 
namespace internal
{
inline constexpr size_t RenormingLowerBound = 20;
} // namespace internal
 
inline constexpr size_t MinRenormPrecisionBits = 10;
inline constexpr size_t MaxRenormPrecisionBits = 20;
 
} // namespace defaults
} // namespace o2::rans
 
#endif /* RANS_INTERNAL_COMMON_DEFAULTS_H_ */