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File indexing completed on 2025-09-13 08:53:32
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 celeritas/grid/XsGridData.hh 0006 //---------------------------------------------------------------------------// 0007 #pragma once 0008 0009 #include "corecel/Types.hh" 0010 #include "corecel/grid/UniformGridData.hh" 0011 #include "celeritas/Types.hh" 0012 #include "celeritas/UnitTypes.hh" 0013 0014 namespace celeritas 0015 { 0016 //---------------------------------------------------------------------------// 0017 /*! 0018 * Tabulated cross section as a function of energy on a 1D grid. 0019 * 0020 * The upper grid values are expected to be pre-scaled by a factor of 1 / E. 0021 * 0022 * Interpolation is linear-linear or spline after transforming from log-E space 0023 * and before scaling the value by E (if the grid point is in the upper grid). 0024 */ 0025 struct XsGridRecord 0026 { 0027 using EnergyUnits = units::Mev; 0028 using XsUnits = units::Native; 0029 0030 UniformGridRecord lower; 0031 UniformGridRecord upper; //!< Values scaled by 1/E 0032 0033 //! Whether the record is initialized and valid 0034 explicit CELER_FUNCTION operator bool() const 0035 { 0036 return (lower || upper) 0037 && (!lower || !upper || lower.grid.back == upper.grid.front); 0038 } 0039 }; 0040 0041 //---------------------------------------------------------------------------// 0042 } // namespace celeritas
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