56 lines
1.6 KiB
C++
56 lines
1.6 KiB
C++
/// @file grotto/gadgets/logarithm/ilog10.hpp
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/// @brief Cleartext reference for `ilog10`.
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/// @details The previous body of this header defined a second `ilog256`.
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/// Integer log10 is `exact_constant::ilog10`.
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/// @copyright Copyright (c) 2019-2023 Ryan Henry and others
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/// @license Released under a GNU General Public v2.0 (GPLv2) license;
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/// see [LICENSE.md](@ref GPLv2) for details.
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#ifndef LIBDPF_INCLUDE_GROTTO_GADGETS_LOGARITHM_ILOG10_HPP__
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#define LIBDPF_INCLUDE_GROTTO_GADGETS_LOGARITHM_ILOG10_HPP__
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#include <cmath>
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#include <array>
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#include <limits>
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#include "grotto/gadget_hints.hpp"
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namespace grotto
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{
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namespace gadgets
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{
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HEDLEY_DIAGNOSTIC_PUSH
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HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
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struct HEDLEY_DEPRECATED_FOR(2026, grotto::exact_constant) ilog10
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{
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template <typename T>
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T operator()(T x)
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{
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if (x <= 0) return 0;
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return std::floor(std::log10(static_cast<double>(x)));
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}
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};
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template <>
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struct gadget_hints<ilog10>
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{
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static constexpr double min = std::exp2(-63);
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static constexpr double max = std::numeric_limits<double>::max();
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static constexpr double poles[] = { 0 };
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static constexpr double interesting_points[] = { 0 };
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static constexpr unsigned degree = 0;
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static constexpr bool has_canonical_representation = false;
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static constexpr double canonical_bounds[] = { };
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static constexpr std::array<double, degree+1> canonical_polys[] = { };
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};
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HEDLEY_DIAGNOSTIC_POP
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} // namespace gadgets
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} // namespace grotto
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#endif // LIBDPF_INCLUDE_GROTTO_GADGETS_LOGARITHM_ILOG10_HPP__
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