Release Cosmopolitan v3.6.0

This release is an atomic upgrade to GCC 14.1.0 with C23 and C++23

third_party/libcxx/experimental/__simd/utility.h

@@ -0,0 +1,103 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_EXPERIMENTAL___SIMD_UTILITY_H
+#define _LIBCPP_EXPERIMENTAL___SIMD_UTILITY_H
+
+#include <__type_traits/is_arithmetic.h>
+#include <__type_traits/is_const.h>
+#include <__type_traits/is_constant_evaluated.h>
+#include <__type_traits/is_convertible.h>
+#include <__type_traits/is_same.h>
+#include <__type_traits/is_unsigned.h>
+#include <__type_traits/is_volatile.h>
+#include <__type_traits/void_t.h>
+#include <__utility/declval.h>
+#include <__utility/integer_sequence.h>
+#include <cstddef>
+#include <cstdint>
+#include <experimental/__config>
+#include <limits>
+
+_LIBCPP_PUSH_MACROS
+#include <__undef_macros>
+
+#if _LIBCPP_STD_VER >= 17 && defined(_LIBCPP_ENABLE_EXPERIMENTAL)
+
+_LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL
+inline namespace parallelism_v2 {
+template <class _Tp>
+inline constexpr bool __is_vectorizable_v =
+    is_arithmetic_v<_Tp> && !is_const_v<_Tp> && !is_volatile_v<_Tp> && !is_same_v<_Tp, bool>;
+
+template <class _Tp>
+_LIBCPP_HIDE_FROM_ABI auto __choose_mask_type() {
+  if constexpr (sizeof(_Tp) == 1) {
+    return uint8_t{};
+  } else if constexpr (sizeof(_Tp) == 2) {
+    return uint16_t{};
+  } else if constexpr (sizeof(_Tp) == 4) {
+    return uint32_t{};
+  } else if constexpr (sizeof(_Tp) == 8) {
+    return uint64_t{};
+  }
+#  ifndef _LIBCPP_HAS_NO_INT128
+  else if constexpr (sizeof(_Tp) == 16) {
+    return __uint128_t{};
+  }
+#  endif
+  else
+    static_assert(sizeof(_Tp) == 0, "Unexpected size");
+}
+
+template <class _Tp>
+_LIBCPP_HIDE_FROM_ABI auto constexpr __set_all_bits(bool __v) {
+  return __v ? (numeric_limits<decltype(__choose_mask_type<_Tp>())>::max()) : 0;
+}
+
+template <class _From, class _To, class = void>
+inline constexpr bool __is_non_narrowing_convertible_v = false;
+
+template <class _From, class _To>
+inline constexpr bool __is_non_narrowing_convertible_v<_From, _To, std::void_t<decltype(_To{std::declval<_From>()})>> =
+    true;
+
+template <class _Tp, class _Up>
+inline constexpr bool __can_broadcast_v =
+    (__is_vectorizable_v<_Up> && __is_non_narrowing_convertible_v<_Up, _Tp>) ||
+    (!__is_vectorizable_v<_Up> && is_convertible_v<_Up, _Tp>) || is_same_v<_Up, int> ||
+    (is_same_v<_Up, unsigned int> && is_unsigned_v<_Tp>);
+
+template <class _Tp, class _Generator, std::size_t _Idx, class = void>
+inline constexpr bool __is_well_formed = false;
+
+template <class _Tp, class _Generator, std::size_t _Idx>
+inline constexpr bool
+    __is_well_formed<_Tp,
+                     _Generator,
+                     _Idx,
+                     std::void_t<decltype(std::declval<_Generator>()(integral_constant<size_t, _Idx>()))>> =
+        __can_broadcast_v<_Tp, decltype(std::declval<_Generator>()(integral_constant<size_t, _Idx>()))>;
+
+template <class _Tp, class _Generator, std::size_t... _Idxes>
+_LIBCPP_HIDE_FROM_ABI constexpr bool __can_generate(index_sequence<_Idxes...>) {
+  return (true && ... && __is_well_formed<_Tp, _Generator, _Idxes>);
+}
+
+template <class _Tp, class _Generator, std::size_t _Size>
+inline constexpr bool __can_generate_v = experimental::__can_generate<_Tp, _Generator>(make_index_sequence<_Size>());
+
+} // namespace parallelism_v2
+_LIBCPP_END_NAMESPACE_EXPERIMENTAL
+
+#endif // _LIBCPP_STD_VER >= 17 && defined(_LIBCPP_ENABLE_EXPERIMENTAL)
+
+_LIBCPP_POP_MACROS
+
+#endif // _LIBCPP_EXPERIMENTAL___SIMD_UTILITY_H