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File indexing completed on 2025-09-16 09:03:18
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 orange/transform/TransformHasher.hh 0006 //---------------------------------------------------------------------------// 0007 #pragma once 0008 0009 #include <cstdlib> 0010 0011 #include "VariantTransform.hh" 0012 0013 namespace celeritas 0014 { 0015 //---------------------------------------------------------------------------// 0016 /*! 0017 * Calculate a hash value of a transform for deduplication. 0018 */ 0019 class TransformHasher 0020 { 0021 public: 0022 //!@{ 0023 //! \name Type aliases 0024 using result_type = std::size_t; 0025 //!@} 0026 0027 public: 0028 // By default, calculate a hash based on the stored data 0029 template<class T> 0030 result_type operator()(T const&) const; 0031 0032 // Special hash for "no transformation" 0033 result_type operator()(NoTransformation const&) const; 0034 0035 // Special hash for "signed permutation" 0036 result_type operator()(SignedPermutation const&) const; 0037 }; 0038 0039 //---------------------------------------------------------------------------// 0040 // FREE FUNCTIONS 0041 //---------------------------------------------------------------------------// 0042 // Calculate a hash for a variant transform 0043 TransformHasher::result_type 0044 visit(TransformHasher const&, VariantTransform const& transform); 0045 0046 //---------------------------------------------------------------------------// 0047 } // namespace celeritas
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