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///
/// @file S.hpp
/// @brief The S1 and S2 functions are part of the Deleglise-Rivat
/// prime counting algorithm.
///
/// Copyright (C) 2025 Kim Walisch, <kim.walisch@gmail.com>
///
/// This file is distributed under the BSD License. See the COPYING
/// file in the top level directory.
///
#ifndef S_HPP
#define S_HPP
#include <cpu_arch_macros.hpp>
#include <int128_t.hpp>
#include <print.hpp>
#include <stdint.h>
namespace primecount {
int64_t S1(int64_t x, int64_t y, int64_t c, int threads, bool print = is_print());
int64_t S2_trivial(int64_t x, int64_t y, int64_t z, int64_t c, int threads, bool print = is_print());
int64_t S2_easy(int64_t x, int64_t y, int64_t z, int64_t c, int threads, bool print = is_print());
int64_t S2_hard(int64_t x, int64_t y, int64_t z, int64_t c, int64_t s2_hard_approx, int threads, bool print = is_print());
#if defined(ENABLE_PORTABLE_POPCNT64) || \
defined(ENABLE_AVX512_VPOPCNT) || \
defined(ENABLE_ARM_SVE)
int64_t S2_hard_default(int64_t x, int64_t y, int64_t z, int64_t c, int64_t s2_hard_approx, int threads, bool print);
#endif
#if defined(ENABLE_MULTIARCH_AVX512_VPOPCNT)
int64_t S2_hard_multiarch_avx512(int64_t x, int64_t y, int64_t z, int64_t c, int64_t s2_hard_approx, int threads, bool print);
#endif
#if defined(ENABLE_MULTIARCH_ARM_SVE)
int64_t S2_hard_multiarch_arm_sve(int64_t x, int64_t y, int64_t z, int64_t c, int64_t s2_hard_approx, int threads, bool print);
#endif
#ifdef HAVE_INT128_T
int128_t S1(int128_t x, int64_t y, int64_t c, int threads, bool print = is_print());
int128_t S2_trivial(int128_t x, int64_t y, int64_t z, int64_t c, int threads, bool print = is_print());
int128_t S2_easy(int128_t x, int64_t y, int64_t z, int64_t c, int threads, bool print = is_print());
int128_t S2_hard(int128_t x, int64_t y, int64_t z, int64_t c, int128_t s2_hard_approx, int threads, bool print = is_print());
#if defined(ENABLE_PORTABLE_POPCNT64) || \
defined(ENABLE_AVX512_VPOPCNT) || \
defined(ENABLE_ARM_SVE)
int128_t S2_hard_default(int128_t x, int64_t y, int64_t z, int64_t c, int128_t s2_hard_approx, int threads, bool print);
#endif
#if defined(ENABLE_MULTIARCH_AVX512_VPOPCNT)
int128_t S2_hard_multiarch_avx512(int128_t x, int64_t y, int64_t z, int64_t c, int128_t s2_hard_approx, int threads, bool print);
#endif
#if defined(ENABLE_MULTIARCH_ARM_SVE)
int128_t S2_hard_multiarch_arm_sve(int128_t x, int64_t y, int64_t z, int64_t c, int128_t s2_hard_approx, int threads, bool print);
#endif
#endif
} // namespace
#endif
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