/// @file grotto/gadgets/logarithm/ilogb.hpp /// @author Ryan Henry /// @brief Cleartext reference for `ilogb`. /// @copyright Copyright (c) 2019-2023 Ryan Henry and others /// @license Released under a GNU General Public v2.0 (GPLv2) license; /// see [LICENSE.md](@ref GPLv2) for details. #ifndef LIBDPF_INCLUDE_GROTTO_GADGETS_LOGARITHM_ILOGB_HPP__ #define LIBDPF_INCLUDE_GROTTO_GADGETS_LOGARITHM_ILOGB_HPP__ #include #include #include #include "grotto/gadget_hints.hpp" namespace grotto { namespace gadgets { HEDLEY_DIAGNOSTIC_PUSH HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED struct HEDLEY_DEPRECATED_FOR(2026, grotto::exact_constant) ilogb { template T operator()(T x) { if (x <= 0) return 0; // TODO return std::ilogb(static_cast(x)); } }; template <> struct gadget_hints { static constexpr double min = std::exp2(-63); static constexpr double max = std::numeric_limits::max(); static constexpr double poles[] = { }; static constexpr double interesting_points[] = { 0 }; static constexpr unsigned degree = 0; static constexpr bool has_canonical_representation = true; static constexpr std::array canonical_bounds = { -0x1.0000000000000p+0063, -0x1.0000000000000p+0063, -0x1.0000000000000p+0062, -0x1.0000000000000p+0062, -0x1.0000000000000p+0061, -0x1.0000000000000p+0061, -0x1.0000000000000p+0060, -0x1.0000000000000p+0060, -0x1.0000000000000p+0059, -0x1.0000000000000p+0059, -0x1.0000000000000p+0058, -0x1.0000000000000p+0058, -0x1.0000000000000p+0057, -0x1.0000000000000p+0057, -0x1.0000000000000p+0056, -0x1.0000000000000p+0056, -0x1.0000000000000p+0055, -0x1.0000000000000p+0055, -0x1.0000000000000p+0054, -0x1.0000000000000p+0054, -0x1.0000000000000p+0053, -0x1.0000000000000p+0053, -0x1.0000000000000p+0052, -0x1.0000000000000p+0052, -0x1.0000000000000p+0051, -0x1.0000000000000p+0051, -0x1.0000000000000p+0050, -0x1.0000000000000p+0050, -0x1.0000000000000p+0049, -0x1.0000000000000p+0049, -0x1.0000000000000p+0048, -0x1.0000000000000p+0048, -0x1.0000000000000p+0047, -0x1.0000000000000p+0047, -0x1.0000000000000p+0046, -0x1.0000000000000p+0046, -0x1.0000000000000p+0045, -0x1.0000000000000p+0045, -0x1.0000000000000p+0044, -0x1.0000000000000p+0044, -0x1.0000000000000p+0043, -0x1.0000000000000p+0043, -0x1.0000000000000p+0042, -0x1.0000000000000p+0042, -0x1.0000000000000p+0041, -0x1.0000000000000p+0041, -0x1.0000000000000p+0040, -0x1.0000000000000p+0040, -0x1.0000000000000p+0039, -0x1.0000000000000p+0039, -0x1.0000000000000p+0038, -0x1.0000000000000p+0038, -0x1.0000000000000p+0037, -0x1.0000000000000p+0037, -0x1.0000000000000p+0036, -0x1.0000000000000p+0036, -0x1.0000000000000p+0035, -0x1.0000000000000p+0035, -0x1.0000000000000p+0034, -0x1.0000000000000p+0034, -0x1.0000000000000p+0033, -0x1.0000000000000p+0033, -0x1.0000000000000p+0032, -0x1.0000000000000p+0032, -0x1.0000000000000p+0031, -0x1.0000000000000p+0031, -0x1.0000000000000p+0030, -0x1.0000000000000p+0030, -0x1.0000000000000p+0029, -0x1.0000000000000p+0029, -0x1.0000000000000p+0028, -0x1.0000000000000p+0028, -0x1.0000000000000p+0027, -0x1.0000000000000p+0027, -0x1.0000000000000p+0026, -0x1.0000000000000p+0026, -0x1.0000000000000p+0025, -0x1.0000000000000p+0025, -0x1.0000000000000p+0024, -0x1.0000000000000p+0024, -0x1.0000000000000p+0023, -0x1.0000000000000p+0023, -0x1.0000000000000p+0022, -0x1.0000000000000p+0022, -0x1.0000000000000p+0021, -0x1.0000000000000p+0021, -0x1.0000000000000p+0020, -0x1.0000000000000p+0020, -0x1.0000000000000p+0019, -0x1.0000000000000p+0019, -0x1.0000000000000p+0018, -0x1.0000000000000p+0018, -0x1.0000000000000p+0017, -0x1.0000000000000p+0017, -0x1.0000000000000p+0016, -0x1.0000000000000p+0016, -0x1.0000000000000p+0015, -0x1.0000000000000p+0015, -0x1.0000000000000p+0014, -0x1.0000000000000p+0014, -0x1.0000000000000p+0013, -0x1.0000000000000p+0013, -0x1.0000000000000p+0012, -0x1.0000000000000p+0012, -0x1.0000000000000p+0011, -0x1.0000000000000p+0011, -0x1.0000000000000p+0010, -0x1.0000000000000p+0010, -0x1.0000000000000p+0009, -0x1.0000000000000p+0009, -0x1.0000000000000p+0008, -0x1.0000000000000p+0008, -0x1.0000000000000p+0007, -0x1.0000000000000p+0007, -0x1.0000000000000p+0006, -0x1.0000000000000p+0006, -0x1.0000000000000p+0005, -0x1.0000000000000p+0005, -0x1.0000000000000p+0004, -0x1.0000000000000p+0004, -0x1.0000000000000p+0003, -0x1.0000000000000p+0003, -0x1.0000000000000p+0002, -0x1.0000000000000p+0002, -0x1.0000000000000p+0001, -0x1.0000000000000p+0001, -0x1.0000000000000p+0000, -0x1.0000000000000p+0000, -0x1.0000000000000p-0001, -0x1.0000000000000p-0001, -0x1.0000000000000p-0002, -0x1.0000000000000p-0002, -0x1.0000000000000p-0003, -0x1.0000000000000p-0003, -0x1.0000000000000p-0004, -0x1.0000000000000p-0004, -0x1.0000000000000p-0005, -0x1.0000000000000p-0005, -0x1.0000000000000p-0006, -0x1.0000000000000p-0006, -0x1.0000000000000p-0007, -0x1.0000000000000p-0007, -0x1.0000000000000p-0008, -0x1.0000000000000p-0008, -0x1.0000000000000p-0009, -0x1.0000000000000p-0009, -0x1.0000000000000p-0010, -0x1.0000000000000p-0010, -0x1.0000000000000p-0011, -0x1.0000000000000p-0011, -0x1.0000000000000p-0012, -0x1.0000000000000p-0012, -0x1.0000000000000p-0013, -0x1.0000000000000p-0013, -0x1.0000000000000p-0014, -0x1.0000000000000p-0014, -0x1.0000000000000p-0015, -0x1.0000000000000p-0015, -0x1.0000000000000p-0016, -0x1.0000000000000p-0016, -0x1.0000000000000p-0017, -0x1.0000000000000p-0017, -0x1.0000000000000p-0018, -0x1.0000000000000p-0018, -0x1.0000000000000p-0019, -0x1.0000000000000p-0019, -0x1.0000000000000p-0020, -0x1.0000000000000p-0020, -0x1.0000000000000p-0021, -0x1.0000000000000p-0021, -0x1.0000000000000p-0022, -0x1.0000000000000p-0022, -0x1.0000000000000p-0023, -0x1.0000000000000p-0023, -0x1.0000000000000p-0024, -0x1.0000000000000p-0024, -0x1.0000000000000p-0025, -0x1.0000000000000p-0025, -0x1.0000000000000p-0026, -0x1.0000000000000p-0026, -0x1.0000000000000p-0027, -0x1.0000000000000p-0027, -0x1.0000000000000p-0028, -0x1.0000000000000p-0028, -0x1.0000000000000p-0029, -0x1.0000000000000p-0029, -0x1.0000000000000p-0030, -0x1.0000000000000p-0030, -0x1.0000000000000p-0031, -0x1.0000000000000p-0031, -0x1.0000000000000p-0032, -0x1.0000000000000p-0032, -0x1.0000000000000p-0033, -0x1.0000000000000p-0033, -0x1.0000000000000p-0034, -0x1.0000000000000p-0034, -0x1.0000000000000p-0035, -0x1.0000000000000p-0035, -0x1.0000000000000p-0036, -0x1.0000000000000p-0036, -0x1.0000000000000p-0037, -0x1.0000000000000p-0037, -0x1.0000000000000p-0038, -0x1.0000000000000p-0038, -0x1.0000000000000p-0039, -0x1.0000000000000p-0039, -0x1.0000000000000p-0040, -0x1.0000000000000p-0040, -0x1.0000000000000p-0041, -0x1.0000000000000p-0041, -0x1.0000000000000p-0042, -0x1.0000000000000p-0042, -0x1.0000000000000p-0043, -0x1.0000000000000p-0043, -0x1.0000000000000p-0044, -0x1.0000000000000p-0044, -0x1.0000000000000p-0045, -0x1.0000000000000p-0045, -0x1.0000000000000p-0046, -0x1.0000000000000p-0046, -0x1.0000000000000p-0047, -0x1.0000000000000p-0047, -0x1.0000000000000p-0048, -0x1.0000000000000p-0048, -0x1.0000000000000p-0049, -0x1.0000000000000p-0049, -0x1.0000000000000p-0050, -0x1.0000000000000p-0050, -0x1.0000000000000p-0051, -0x1.0000000000000p-0051, -0x1.0000000000000p-0052, -0x1.0000000000000p-0052, -0x1.0000000000000p-0053, -0x1.0000000000000p-0053, -0x1.0000000000000p-0054, -0x1.0000000000000p-0054, -0x1.0000000000000p-0055, -0x1.0000000000000p-0055, -0x1.0000000000000p-0056, -0x1.0000000000000p-0056, -0x1.0000000000000p-0057, -0x1.0000000000000p-0057, -0x1.0000000000000p-0058, -0x1.0000000000000p-0058, -0x1.0000000000000p-0059, -0x1.0000000000000p-0059, -0x1.0000000000000p-0060, -0x1.0000000000000p-0060, -0x1.0000000000000p-0061, -0x1.0000000000000p-0061, -0x1.0000000000000p-0062, -0x1.0000000000000p-0062, -0x1.0000000000000p-0063, -0x1.0000000000000p-0063, +0x0.0000000000000p+0000, +0x0.0000000000000p+0000, +0x1.0000000000000p-0063, +0x1.0000000000000p-0063, +0x1.0000000000000p-0062, +0x1.0000000000000p-0062, +0x1.0000000000000p-0061, +0x1.0000000000000p-0061, +0x1.0000000000000p-0060, +0x1.0000000000000p-0060, +0x1.0000000000000p-0059, +0x1.0000000000000p-0059, +0x1.0000000000000p-0058, +0x1.0000000000000p-0058, +0x1.0000000000000p-0057, +0x1.0000000000000p-0057, +0x1.0000000000000p-0056, +0x1.0000000000000p-0056, +0x1.0000000000000p-0055, +0x1.0000000000000p-0055, +0x1.0000000000000p-0054, +0x1.0000000000000p-0054, +0x1.0000000000000p-0053, +0x1.0000000000000p-0053, +0x1.0000000000000p-0052, +0x1.0000000000000p-0052, +0x1.0000000000000p-0051, +0x1.0000000000000p-0051, +0x1.0000000000000p-0050, +0x1.0000000000000p-0050, +0x1.0000000000000p-0049, +0x1.0000000000000p-0049, +0x1.0000000000000p-0048, +0x1.0000000000000p-0048, +0x1.0000000000000p-0047, +0x1.0000000000000p-0047, +0x1.0000000000000p-0046, +0x1.0000000000000p-0046, +0x1.0000000000000p-0045, +0x1.0000000000000p-0045, +0x1.0000000000000p-0044, +0x1.0000000000000p-0044, +0x1.0000000000000p-0043, +0x1.0000000000000p-0043, +0x1.0000000000000p-0042, +0x1.0000000000000p-0042, +0x1.0000000000000p-0041, +0x1.0000000000000p-0041, +0x1.0000000000000p-0040, +0x1.0000000000000p-0040, +0x1.0000000000000p-0039, +0x1.0000000000000p-0039, +0x1.0000000000000p-0038, +0x1.0000000000000p-0038, +0x1.0000000000000p-0037, +0x1.0000000000000p-0037, +0x1.0000000000000p-0036, +0x1.0000000000000p-0036, +0x1.0000000000000p-0035, +0x1.0000000000000p-0035, +0x1.0000000000000p-0034, +0x1.0000000000000p-0034, +0x1.0000000000000p-0033, +0x1.0000000000000p-0033, +0x1.0000000000000p-0032, +0x1.0000000000000p-0032, +0x1.0000000000000p-0031, +0x1.0000000000000p-0031, +0x1.0000000000000p-0030, +0x1.0000000000000p-0030, +0x1.0000000000000p-0029, +0x1.0000000000000p-0029, +0x1.0000000000000p-0028, +0x1.0000000000000p-0028, +0x1.0000000000000p-0027, +0x1.0000000000000p-0027, +0x1.0000000000000p-0026, +0x1.0000000000000p-0026, +0x1.0000000000000p-0025, +0x1.0000000000000p-0025, +0x1.0000000000000p-0024, +0x1.0000000000000p-0024, +0x1.0000000000000p-0023, +0x1.0000000000000p-0023, +0x1.0000000000000p-0022, +0x1.0000000000000p-0022, +0x1.0000000000000p-0021, +0x1.0000000000000p-0021, +0x1.0000000000000p-0020, +0x1.0000000000000p-0020, +0x1.0000000000000p-0019, +0x1.0000000000000p-0019, +0x1.0000000000000p-0018, +0x1.0000000000000p-0018, +0x1.0000000000000p-0017, +0x1.0000000000000p-0017, +0x1.0000000000000p-0016, +0x1.0000000000000p-0016, +0x1.0000000000000p-0015, +0x1.0000000000000p-0015, +0x1.0000000000000p-0014, +0x1.0000000000000p-0014, +0x1.0000000000000p-0013, +0x1.0000000000000p-0013, +0x1.0000000000000p-0012, +0x1.0000000000000p-0012, +0x1.0000000000000p-0011, +0x1.0000000000000p-0011, +0x1.0000000000000p-0010, +0x1.0000000000000p-0010, +0x1.0000000000000p-0009, +0x1.0000000000000p-0009, +0x1.0000000000000p-0008, +0x1.0000000000000p-0008, +0x1.0000000000000p-0007, +0x1.0000000000000p-0007, +0x1.0000000000000p-0006, +0x1.0000000000000p-0006, +0x1.0000000000000p-0005, +0x1.0000000000000p-0005, +0x1.0000000000000p-0004, +0x1.0000000000000p-0004, +0x1.0000000000000p-0003, +0x1.0000000000000p-0003, +0x1.0000000000000p-0002, +0x1.0000000000000p-0002, +0x1.0000000000000p-0001, +0x1.0000000000000p-0001, +0x1.0000000000000p+0000, +0x1.0000000000000p+0000, +0x1.0000000000000p+0001, +0x1.0000000000000p+0001, +0x1.0000000000000p+0002, +0x1.0000000000000p+0002, +0x1.0000000000000p+0003, +0x1.0000000000000p+0003, +0x1.0000000000000p+0004, +0x1.0000000000000p+0004, +0x1.0000000000000p+0005, +0x1.0000000000000p+0005, +0x1.0000000000000p+0006, +0x1.0000000000000p+0006, +0x1.0000000000000p+0007, +0x1.0000000000000p+0007, +0x1.0000000000000p+0008, +0x1.0000000000000p+0008, +0x1.0000000000000p+0009, +0x1.0000000000000p+0009, +0x1.0000000000000p+0010, +0x1.0000000000000p+0010, +0x1.0000000000000p+0011, +0x1.0000000000000p+0011, +0x1.0000000000000p+0012, +0x1.0000000000000p+0012, +0x1.0000000000000p+0013, +0x1.0000000000000p+0013, +0x1.0000000000000p+0014, +0x1.0000000000000p+0014, +0x1.0000000000000p+0015, +0x1.0000000000000p+0015, +0x1.0000000000000p+0016, +0x1.0000000000000p+0016, +0x1.0000000000000p+0017, +0x1.0000000000000p+0017, +0x1.0000000000000p+0018, +0x1.0000000000000p+0018, +0x1.0000000000000p+0019, +0x1.0000000000000p+0019, +0x1.0000000000000p+0020, +0x1.0000000000000p+0020, +0x1.0000000000000p+0021, +0x1.0000000000000p+0021, +0x1.0000000000000p+0022, +0x1.0000000000000p+0022, +0x1.0000000000000p+0023, +0x1.0000000000000p+0023, +0x1.0000000000000p+0024, +0x1.0000000000000p+0024, +0x1.0000000000000p+0025, +0x1.0000000000000p+0025, +0x1.0000000000000p+0026, +0x1.0000000000000p+0026, +0x1.0000000000000p+0027, +0x1.0000000000000p+0027, +0x1.0000000000000p+0028, +0x1.0000000000000p+0028, +0x1.0000000000000p+0029, +0x1.0000000000000p+0029, +0x1.0000000000000p+0030, +0x1.0000000000000p+0030, +0x1.0000000000000p+0031, +0x1.0000000000000p+0031, +0x1.0000000000000p+0032, +0x1.0000000000000p+0032, +0x1.0000000000000p+0033, +0x1.0000000000000p+0033, +0x1.0000000000000p+0034, +0x1.0000000000000p+0034, +0x1.0000000000000p+0035, +0x1.0000000000000p+0035, +0x1.0000000000000p+0036, +0x1.0000000000000p+0036, +0x1.0000000000000p+0037, +0x1.0000000000000p+0037, +0x1.0000000000000p+0038, +0x1.0000000000000p+0038, +0x1.0000000000000p+0039, +0x1.0000000000000p+0039, +0x1.0000000000000p+0040, +0x1.0000000000000p+0040, +0x1.0000000000000p+0041, +0x1.0000000000000p+0041, +0x1.0000000000000p+0042, +0x1.0000000000000p+0042, +0x1.0000000000000p+0043, +0x1.0000000000000p+0043, +0x1.0000000000000p+0044, +0x1.0000000000000p+0044, +0x1.0000000000000p+0045, +0x1.0000000000000p+0045, +0x1.0000000000000p+0046, +0x1.0000000000000p+0046, +0x1.0000000000000p+0047, +0x1.0000000000000p+0047, +0x1.0000000000000p+0048, +0x1.0000000000000p+0048, +0x1.0000000000000p+0049, +0x1.0000000000000p+0049, +0x1.0000000000000p+0050, +0x1.0000000000000p+0050, +0x1.0000000000000p+0051, +0x1.0000000000000p+0051, +0x1.0000000000000p+0052, +0x1.0000000000000p+0052, +0x1.0000000000000p+0053, +0x1.0000000000000p+0053, +0x1.0000000000000p+0054, +0x1.0000000000000p+0054, +0x1.0000000000000p+0055, +0x1.0000000000000p+0055, +0x1.0000000000000p+0056, +0x1.0000000000000p+0056, +0x1.0000000000000p+0057, +0x1.0000000000000p+0057, +0x1.0000000000000p+0058, +0x1.0000000000000p+0058, +0x1.0000000000000p+0059, +0x1.0000000000000p+0059, +0x1.0000000000000p+0060, +0x1.0000000000000p+0060, +0x1.0000000000000p+0061, +0x1.0000000000000p+0061, +0x1.0000000000000p+0062, +0x1.0000000000000p+0062 }; static constexpr std::array, 510> canonical_polys = { 63, 63, 62, 62, 61, 61, 60, 60, 59, 59, 58, 58, 57, 57, 56, 56, 55, 55, 54, 54, 53, 53, 52, 52, 51, 51, 50, 50, 49, 49, 48, 48, 47, 47, 46, 46, 45, 45, 44, 44, 43, 43, 42, 42, 41, 41, 40, 40, 39, 39, 38, 38, 37, 37, 36, 36, 35, 35, 34, 34, 33, 33, 32, 32, 31, 31, 30, 30, 29, 29, 28, 28, 27, 27, 26, 26, 25, 25, 24, 24, 23, 23, 22, 22, 21, 21, 20, 20, 19, 19, 18, 18, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0, -1, -1, -2, -2, -3, -3, -4, -4, -5, -5, -6, -6, -7, -7, -8, -8, -9, -9, -10, -10, -11, -11, -12, -12, -13, -13, -14, -14, -15, -15, -16, -16, -17, -17, -18, -18, -19, -19, -20, -20, -21, -21, -22, -22, -23, -23, -24, -24, -25, -25, -26, -26, -27, -27, -28, -28, -29, -29, -30, -30, -31, -31, -32, -32, -33, -33, -34, -34, -35, -35, -36, -36, -37, -37, -38, -38, -39, -39, -40, -40, -41, -41, -42, -42, -43, -43, -44, -44, -45, -45, -46, -46, -47, -47, -48, -48, -49, -49, -50, -50, -51, -51, -52, -52, -53, -53, -54, -54, -55, -55, -56, -56, -57, -57, -58, -58, -59, -59, -60, -60, -61, -61, -62, -62, -63, -63, -64, -64, -63, -63, -62, -62, -61, -61, -60, -60, -59, -59, -58, -58, -57, -57, -56, -56, -55, -55, -54, -54, -53, -53, -52, -52, -51, -51, -50, -50, -49, -49, -48, -48, -47, -47, -46, -46, -45, -45, -44, -44, -43, -43, -42, -42, -41, -41, -40, -40, -39, -39, -38, -38, -37, -37, -36, -36, -35, -35, -34, -34, -33, -33, -32, -32, -31, -31, -30, -30, -29, -29, -28, -28, -27, -27, -26, -26, -25, -25, -24, -24, -23, -23, -22, -22, -21, -21, -20, -20, -19, -19, -18, -18, -17, -17, -16, -16, -15, -15, -14, -14, -13, -13, -12, -12, -11, -11, -10, -10, -9, -9, -8, -8, -7, -7, -6, -6, -5, -5, -4, -4, -3, -3, -2, -2, -1, -1, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31, 32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37, 38, 38, 39, 39, 40, 40, 41, 41, 42, 42, 43, 43, 44, 44, 45, 45, 46, 46, 47, 47, 48, 48, 49, 49, 50, 50, 51, 51, 52, 52, 53, 53, 54, 54, 55, 55, 56, 56, 57, 57, 58, 58, 59, 59, 60, 60, 61, 61, 62, 62, 63, 63 }; }; HEDLEY_DIAGNOSTIC_POP } // namespace gadgets } // namespace grotto #endif // LIBDPF_INCLUDE_GROTTO_GADGETS_LOGARITHM_ILOGB_HPP__