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File indexing completed on 2025-01-30 10:17:12
0001 //----------------------------------*-C++-*----------------------------------// 0002 // Copyright 2024 UT-Battelle, LLC, and other Celeritas developers. 0003 // See the top-level COPYRIGHT file for details. 0004 // SPDX-License-Identifier: (Apache-2.0 OR MIT) 0005 //---------------------------------------------------------------------------// 0006 //! \file orange/transform/TransformHasher.hh 0007 //---------------------------------------------------------------------------// 0008 #pragma once 0009 0010 #include <cstdlib> 0011 0012 #include "VariantTransform.hh" 0013 0014 namespace celeritas 0015 { 0016 //---------------------------------------------------------------------------// 0017 /*! 0018 * Calculate a hash value of a transform for deduplication. 0019 */ 0020 class TransformHasher 0021 { 0022 public: 0023 //!@{ 0024 //! \name Type aliases 0025 using result_type = std::size_t; 0026 //!@} 0027 0028 public: 0029 // By default, calculate a hash based on the stored data 0030 template<class T> 0031 result_type operator()(T const&) const; 0032 0033 // Special hash for "no transformation" 0034 result_type operator()(NoTransformation const&) const; 0035 0036 // Special hash for "signed permutation" 0037 result_type operator()(SignedPermutation const&) const; 0038 }; 0039 0040 //---------------------------------------------------------------------------// 0041 // FREE FUNCTIONS 0042 //---------------------------------------------------------------------------// 0043 // Calculate a hash for a variant transform 0044 TransformHasher::result_type 0045 visit(TransformHasher const&, VariantTransform const& transform); 0046 0047 //---------------------------------------------------------------------------// 0048 } // namespace celeritas
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