libdpf/include/grotto/gadgets/logarithm/ilogb.hpp

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/// @file grotto/gadgets/logarithm/ilogb.hpp
/// @author Ryan Henry <ryan.henry@ucalgary.ca>
/// @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 <cmath>
#include <array>
#include <limits>
#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 <typename T>
T operator()(T x)
{
if (x <= 0) return 0; // TODO
return std::ilogb(static_cast<double>(x));
}
};
template <>
struct gadget_hints<grotto::gadgets::ilogb>
{
static constexpr double min = std::exp2(-63);
static constexpr double max = std::numeric_limits<double>::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<double, 508> 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<std::array<double, degree+1>, 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__