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Initial import of libdpf.

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Co-authored-by: Cursor <cursoragent@cursor.com>
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Ryan Henry 2026-09-24 14:08:32 -06:00
commit e4e666f459
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include/grotto/gadgets/logarithm/ilog10.hpp Normal file
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/// @file grotto/gadgets/logarithm/ilog10.hpp
/// @author Ryan Henry <ryan.henry@ucalgary.ca>
/// @brief
/// @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_ILOG10_HPP__
#define LIBDPF_INCLUDE_GROTTO_GADGETS_LOGARITHM_ILOG10_HPP__
#include <cmath>
#include <array>
#include <limits>
#include "grotto/gadget_hints.hpp"
namespace grotto
{
namespace gadgets
{
struct ilog256
{
template <typename T>
T operator()(T x)
{
if (x <= 0) return 0; // TODO
return std::ceil(std::log2(static_cast(x))/8);
}
};
template <>
struct gadget_hints<ilog256>
{
static constexpr double min = std::exp2(-63);
static constexpr double max = std::numeric_limits<double>::max();
static constexpr double hint_poles[] = { };
static constexpr double hint_interesting_points[] = { 0 };
static constexpr unsigned degree = 0;
static constexpr bool has_canonical_representation = false;
static constexpr double canonical_bounds[] = { };
static constexpr std::array<double, degree+1> hint_canonical_polys[] = { };
};
} // namespace gadgets
} // namespace grotto
#endif // LIBDPF_INCLUDE_GROTTO_GADGETS_LOGARITHM_ILOG10_HPP__