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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/trigonometric/csc.hpp Normal file
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/// @file grotto/gadgets/trigonometric/csc.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_TRIGONOMETRIC_CSC_HPP__
#define LIBDPF_INCLUDE_GROTTO_GADGETS_TRIGONOMETRIC_CSC_HPP__
#include <cmath>
#include <array>
#include <limits>
#include "../../gadget_hints.hpp"
namespace grotto
{
namespace gadgets
{
struct csc
{
template <typename T>
T operator()(T x)
{
if (std::abs(x) == M_PI/2) return 0; // TODO
if (x == 0) return 0; // TODO
if (x < 0) return std::max(1/std::sin(static_cast<double>(x)), std::numeric_limits<T>::min());
if (x > 0) return std::min(1/std::sin(static_cast<double>(x)), std::numeric_limits<T>::max());
}
};
template <>
struct gadget_hints<csc>
{
static constexpr double min = -M_PI;
static constexpr double max = M_PI;
static constexpr double poles[] = { -M_PI, 0, M_PI };
static constexpr double interesting_points[] = { };
static constexpr unsigned degree = 3;
static constexpr bool has_canonical_representation = false;
static constexpr double canonical_bounds[] = { };
static constexpr std::array<double, degree+1> canonical_polys[] = { };
};
} // namespace gadgets
} // namespace grotto
#endif // LIBDPF_INCLUDE_GROTTO_GADGETS_TRIGONOMETRIC_CSC_HPP__