Types.h

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// Mantid Repository : https://github.com/mantidproject/mantid
//
// Copyright © 2018 ISIS Rutherford Appleton Laboratory UKRI,
//   NScD Oak Ridge National Laboratory, European Spallation Source,
//   Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
// SPDX - License - Identifier: GPL - 3.0 +
#pragma once
 
// boost::multiprecision is not used here because the
// with of the number is one WORD bigger, than actual
// number size, see here
// https://www.boost.org/doc/libs/1_61_0/libs/multiprecision/doc/html/boost_multiprecision/tut/ints/cpp_int.html
#include "WideInt.h"
#include <Eigen/Dense>
#include <ostream>
 
namespace morton_index {
using std::operator"" _cppui128;
using std::operator"" _cppui256;
using uint96_t = std::wide_uint<96>;
using uint128_t = std::uint128_t;
using uint256_t = std::uint256_t;
} // namespace morton_index
 
namespace morton_index {
 
template <size_t ND, typename IntT> using IntArray = Eigen::Array<IntT, static_cast<int>(ND), 1>;
 
template <size_t ND> using MDCoordinate = Eigen::Array<float, static_cast<int>(ND), 1>;
 
template <size_t ND> using MDSpaceBounds = Eigen::Array<float, static_cast<int>(ND), 2>;
template <size_t ND> using MDSpaceDimensions = Eigen::Array<float, static_cast<int>(ND), 1>;
template <size_t ND> using MDSpaceSteps = Eigen::Array<float, static_cast<int>(ND), 1>;
 
template <typename CoordT, size_t ND> using AffineND = Eigen::Transform<CoordT, static_cast<int>(ND), Eigen::Affine>;
 
template <size_t ND> using BinIndices = Eigen::Matrix<size_t, 1, static_cast<int>(ND)>;
 
using Morton96 = uint96_t;
 
template <size_t SZ> struct MortonIndex { using type = uint256_t; };
 
template <> struct MortonIndex<1> { using type = uint8_t; };
 
template <> struct MortonIndex<2> { using type = uint16_t; };
 
template <> struct MortonIndex<4> { using type = uint32_t; };
 
template <> struct MortonIndex<8> { using type = uint64_t; };
 
template <> struct MortonIndex<12> { using type = Morton96; };
 
template <> struct MortonIndex<16> { using type = uint128_t; };
 
template <typename FP> struct UnderlyingInt {};
 
template <> struct UnderlyingInt<float> { using type = uint32_t; };
 
template <> struct UnderlyingInt<double> { using type = uint64_t; };
 
template <size_t ND, typename FP> struct IndexTypes {
  using MortonType = typename MortonIndex<ND * sizeof(FP)>::type;
  using IntType = typename UnderlyingInt<FP>::type;
};
 
} // namespace morton_index