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File indexing completed on 2025-09-14 08:50:59
0001 //------------------------------- -*- C++ -*- -------------------------------// 0002 // Copyright Celeritas contributors: see top-level COPYRIGHT file for details 0003 // SPDX-License-Identifier: (Apache-2.0 OR MIT) 0004 //---------------------------------------------------------------------------// 0005 //! \file corecel/random/params/XorwowRngParams.hh 0006 //---------------------------------------------------------------------------// 0007 #pragma once 0008 0009 #include "corecel/Types.hh" 0010 #include "corecel/cont/Array.hh" 0011 #include "corecel/data/CollectionMirror.hh" 0012 #include "corecel/data/ParamsDataInterface.hh" 0013 #include "corecel/random/data/XorwowRngData.hh" 0014 0015 namespace celeritas 0016 { 0017 //---------------------------------------------------------------------------// 0018 /*! 0019 * Shared data for XORWOW pseudo-random number generator. 0020 */ 0021 class XorwowRngParams final : public ParamsDataInterface<XorwowRngParamsData> 0022 { 0023 public: 0024 // Construct with a low-entropy seed 0025 explicit XorwowRngParams(unsigned int seed); 0026 0027 //! \todo Construct with a seed of 256 bytes (16-byte hex) or shasum string 0028 // explicit XorwowRngParams(const std::string& hexstring); 0029 0030 //! Access material properties on the host 0031 HostRef const& host_ref() const final { return data_.host_ref(); } 0032 0033 //! Access material properties on the device 0034 DeviceRef const& device_ref() const final { return data_.device_ref(); } 0035 0036 private: 0037 //// DATA //// 0038 0039 // Host/device storage and reference 0040 CollectionMirror<XorwowRngParamsData> data_; 0041 0042 //// TYPES //// 0043 0044 using JumpPoly = Array<unsigned int, 5>; 0045 using ArrayJumpPoly = Array<JumpPoly, 32>; 0046 0047 //// HELPER FUNCTIONS //// 0048 0049 ArrayJumpPoly const& get_jump_poly(); 0050 ArrayJumpPoly const& get_jump_subsequence_poly(); 0051 }; 0052 0053 //---------------------------------------------------------------------------// 0054 } // namespace celeritas
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