mirror of
https://github.com/pocketpy/pocketpy
synced 2025-10-30 16:30:16 +00:00
334 lines
8.0 KiB
C++
334 lines
8.0 KiB
C++
/***************************************************************************
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* Copyright (c) Johan Mabille, Sylvain Corlay and Wolf Vollprecht *
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* Copyright (c) QuantStack *
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* *
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* Distributed under the terms of the BSD 3-Clause License. *
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* *
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* The full license is in the file LICENSE, distributed with this software. *
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****************************************************************************/
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#ifndef XTENSOR_SIMD_HPP
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#define XTENSOR_SIMD_HPP
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#include <vector>
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#include <xtl/xdynamic_bitset.hpp>
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#include "xutils.hpp"
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#ifdef XTENSOR_USE_XSIMD
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#include <xsimd/xsimd.hpp>
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// #include <xsimd/memory/xsimd_load_store.hpp>
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#if defined(_MSV_VER) && (_MSV_VER < 1910)
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template <class T, class A>
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inline xsimd::batch_bool<T, A> isnan(const xsimd::batch<T, A>& b)
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{
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return xsimd::isnan(b);
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}
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#endif
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namespace xt_simd
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{
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template <class T, std::size_t A>
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using aligned_allocator = xsimd::aligned_allocator<T, A>;
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using aligned_mode = xsimd::aligned_mode;
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using unaligned_mode = xsimd::unaligned_mode;
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template <class A>
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using allocator_alignment = xsimd::allocator_alignment<A>;
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template <class A>
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using allocator_alignment_t = xsimd::allocator_alignment_t<A>;
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template <class C>
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using container_alignment = xsimd::container_alignment<C>;
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template <class C>
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using container_alignment_t = xsimd::container_alignment_t<C>;
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template <class T>
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using simd_traits = xsimd::simd_traits<T>;
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template <class T>
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using revert_simd_traits = xsimd::revert_simd_traits<T>;
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template <class T>
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using simd_type = xsimd::simd_type<T>;
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template <class T>
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using simd_bool_type = xsimd::simd_bool_type<T>;
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template <class T>
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using revert_simd_type = xsimd::revert_simd_type<T>;
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template <class T1, class T2>
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using simd_return_type = xsimd::simd_return_type<T1, T2>;
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using xsimd::broadcast_as;
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using xsimd::get_alignment_offset;
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using xsimd::load_as;
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using xsimd::select;
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using xsimd::store_as;
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template <class V>
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using is_batch_bool = xsimd::is_batch_bool<V>;
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template <class V>
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using is_batch_complex = xsimd::is_batch_complex<V>;
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template <class T1, class T2>
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using simd_condition = xsimd::detail::simd_condition<T1, T2>;
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}
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#else // XTENSOR_USE_XSIMD
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namespace xt_simd
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{
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template <class T, std::size_t A>
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class aligned_allocator;
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struct aligned_mode
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{
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};
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struct unaligned_mode
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{
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};
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template <class A>
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struct allocator_alignment
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{
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using type = unaligned_mode;
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};
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template <class A>
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using allocator_alignment_t = typename allocator_alignment<A>::type;
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template <class C>
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struct container_alignment
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{
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using type = unaligned_mode;
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};
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template <class C>
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using container_alignment_t = typename container_alignment<C>::type;
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template <class T>
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struct simd_traits
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{
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using type = T;
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using bool_type = bool;
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using batch_bool = bool;
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static constexpr std::size_t size = 1;
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};
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template <class T>
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struct revert_simd_traits
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{
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using type = T;
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static constexpr std::size_t size = simd_traits<type>::size;
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};
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template <class T>
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using simd_type = typename simd_traits<T>::type;
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template <class T>
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using simd_bool_type = typename simd_traits<T>::bool_type;
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template <class T>
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using revert_simd_type = typename revert_simd_traits<T>::type;
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template <class R, class T>
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inline simd_type<R> broadcast_as(const T& value)
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{
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return value;
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}
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template <class R, class T>
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inline simd_type<R> load_as(const T* src, aligned_mode)
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{
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return *src;
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}
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template <class R, class T>
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inline simd_type<R> load_as(const T* src, unaligned_mode)
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{
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return *src;
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}
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template <class R, class T>
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inline void store_as(R* dst, const simd_type<T>& src, aligned_mode)
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{
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*dst = src;
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}
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template <class R, class T>
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inline void store_as(R* dst, const simd_type<T>& src, unaligned_mode)
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{
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*dst = src;
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}
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template <class T>
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inline T select(bool cond, const T& t1, const T& t2)
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{
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return cond ? t1 : t2;
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}
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template <class T>
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inline std::size_t get_alignment_offset(const T* /*p*/, std::size_t size, std::size_t /*block_size*/)
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{
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return size;
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}
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template <class T1, class T2>
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using simd_return_type = simd_type<T2>;
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template <class V>
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struct is_batch_bool : std::false_type
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{
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};
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template <class V>
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struct is_batch_complex : std::false_type
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{
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};
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template <class T1, class T2>
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struct simd_condition : std::true_type
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{
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};
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}
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#endif // XTENSOR_USE_XSIMD
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namespace xt
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{
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using xt_simd::aligned_mode;
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using xt_simd::unaligned_mode;
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struct inner_aligned_mode
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{
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};
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namespace detail
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{
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template <class A1, class A2>
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struct driven_align_mode_impl
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{
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using type = std::conditional_t<std::is_same<A1, A2>::value, A1, ::xt_simd::unaligned_mode>;
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};
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template <class A>
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struct driven_align_mode_impl<inner_aligned_mode, A>
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{
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using type = A;
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};
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}
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template <class A1, class A2>
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struct driven_align_mode
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{
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using type = typename detail::driven_align_mode_impl<A1, A2>::type;
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};
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template <class A1, class A2>
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using driven_align_mode_t = typename detail::driven_align_mode_impl<A1, A2>::type;
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namespace detail
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{
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template <class E, class T, class = void>
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struct has_load_simd : std::false_type
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{
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};
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template <class E, class T>
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struct has_load_simd<
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E,
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T,
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void_t<decltype(std::declval<E>().template load_simd<aligned_mode, T>(typename E::size_type(0)))>>
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: std::true_type
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{
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};
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template <class E, class T, bool B = xt_simd::simd_condition<typename E::value_type, T>::value>
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struct has_simd_interface_impl : has_load_simd<E, T>
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{
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};
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template <class E, class T>
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struct has_simd_interface_impl<E, T, false> : std::false_type
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{
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};
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}
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template <class E, class T = typename std::decay_t<E>::value_type>
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struct has_simd_interface : detail::has_simd_interface_impl<E, T>
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{
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};
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template <class T>
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struct has_simd_type : std::integral_constant<bool, !std::is_same<T, xt_simd::simd_type<T>>::value>
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{
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};
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namespace detail
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{
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template <class F, class B, class = void>
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struct has_simd_apply_impl : std::false_type
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{
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};
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template <class F, class B>
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struct has_simd_apply_impl<F, B, void_t<decltype(&F::template simd_apply<B>)>> : std::true_type
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{
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};
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}
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template <class F, class B>
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struct has_simd_apply : detail::has_simd_apply_impl<F, B>
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{
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};
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template <class T>
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using bool_load_type = std::conditional_t<std::is_same<T, bool>::value, uint8_t, T>;
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template <class T>
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struct forbid_simd : std::false_type
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{
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};
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template <class A>
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struct forbid_simd<std::vector<bool, A>> : std::true_type
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{
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};
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template <class A>
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struct forbid_simd<const std::vector<bool, A>> : std::true_type
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{
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};
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template <class B, class A>
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struct forbid_simd<xtl::xdynamic_bitset<B, A>> : std::true_type
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{
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};
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template <class B, class A>
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struct forbid_simd<const xtl::xdynamic_bitset<B, A>> : std::true_type
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{
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};
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template <class C, class T1, class T2>
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struct container_simd_return_type
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: std::enable_if<!forbid_simd<C>::value, xt_simd::simd_return_type<T1, bool_load_type<T2>>>
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{
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};
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template <class C, class T1, class T2>
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using container_simd_return_type_t = typename container_simd_return_type<C, T1, T2>::type;
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}
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#endif
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