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Release Cosmopolitan v3.6.0

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This release is an atomic upgrade to GCC 14.1.0 with C23 and C++23
This commit is contained in:
Justine Tunney 2024-07-23 03:16:17 -07:00
parent 62ace3623a
commit 5660ec4741
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GPG key ID: BE714B4575D6E328
1585 changed files with 117353 additions and 271644 deletions
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63
third_party/libcxx/__numeric/midpoint.h vendored
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@ -35,55 +35,48 @@ _LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 20
template <class _Tp>
_LIBCPP_INLINE_VISIBILITY constexpr
enable_if_t<is_integral_v<_Tp> && !is_same_v<bool, _Tp> && !is_null_pointer_v<_Tp>, _Tp>
midpoint(_Tp __a, _Tp __b) noexcept
_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
{
using _Up = make_unsigned_t<_Tp>;
constexpr _Up __bitshift = numeric_limits<_Up>::digits - 1;
_LIBCPP_HIDE_FROM_ABI constexpr enable_if_t<is_integral_v<_Tp> && !is_same_v<bool, _Tp> && !is_null_pointer_v<_Tp>, _Tp>
midpoint(_Tp __a, _Tp __b) noexcept _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK {
using _Up = make_unsigned_t<_Tp>;
constexpr _Up __bitshift = numeric_limits<_Up>::digits - 1;
_Up __diff = _Up(__b) - _Up(__a);
_Up __sign_bit = __b < __a;
_Up __diff = _Up(__b) - _Up(__a);
_Up __sign_bit = __b < __a;
_Up __half_diff = (__diff / 2) + (__sign_bit << __bitshift) + (__sign_bit & __diff);
_Up __half_diff = (__diff / 2) + (__sign_bit << __bitshift) + (__sign_bit & __diff);
return __a + __half_diff;
return __a + __half_diff;
}
template <class _TPtr>
_LIBCPP_INLINE_VISIBILITY constexpr
enable_if_t<is_pointer_v<_TPtr>
&& is_object_v<remove_pointer_t<_TPtr>>
&& ! is_void_v<remove_pointer_t<_TPtr>>
&& (sizeof(remove_pointer_t<_TPtr>) > 0), _TPtr>
midpoint(_TPtr __a, _TPtr __b) noexcept
{
return __a + _VSTD::midpoint(ptrdiff_t(0), __b - __a);
template <class _Tp, enable_if_t<is_object_v<_Tp> && !is_void_v<_Tp> && (sizeof(_Tp) > 0), int> = 0>
_LIBCPP_HIDE_FROM_ABI constexpr _Tp* midpoint(_Tp* __a, _Tp* __b) noexcept {
return __a + std::midpoint(ptrdiff_t(0), __b - __a);
}
template <typename _Tp>
_LIBCPP_HIDE_FROM_ABI constexpr int __sign(_Tp __val) {
return (_Tp(0) < __val) - (__val < _Tp(0));
return (_Tp(0) < __val) - (__val < _Tp(0));
}
template <typename _Fp>
_LIBCPP_HIDE_FROM_ABI constexpr _Fp __fp_abs(_Fp __f) { return __f >= 0 ? __f : -__f; }
_LIBCPP_HIDE_FROM_ABI constexpr _Fp __fp_abs(_Fp __f) {
return __f >= 0 ? __f : -__f;
}
template <class _Fp>
_LIBCPP_INLINE_VISIBILITY constexpr
enable_if_t<is_floating_point_v<_Fp>, _Fp>
midpoint(_Fp __a, _Fp __b) noexcept
{
constexpr _Fp __lo = numeric_limits<_Fp>::min()*2;
constexpr _Fp __hi = numeric_limits<_Fp>::max()/2;
return std::__fp_abs(__a) <= __hi && std::__fp_abs(__b) <= __hi ? // typical case: overflow is impossible
(__a + __b)/2 : // always correctly rounded
std::__fp_abs(__a) < __lo ? __a + __b/2 : // not safe to halve a
std::__fp_abs(__b) < __lo ? __a/2 + __b : // not safe to halve b
__a/2 + __b/2; // otherwise correctly rounded
_LIBCPP_HIDE_FROM_ABI constexpr enable_if_t<is_floating_point_v<_Fp>, _Fp> midpoint(_Fp __a, _Fp __b) noexcept {
constexpr _Fp __lo = numeric_limits<_Fp>::min() * 2;
constexpr _Fp __hi = numeric_limits<_Fp>::max() / 2;
// typical case: overflow is impossible
if (std::__fp_abs(__a) <= __hi && std::__fp_abs(__b) <= __hi)
return (__a + __b) / 2; // always correctly rounded
if (std::__fp_abs(__a) < __lo)
return __a + __b / 2; // not safe to halve a
if (std::__fp_abs(__b) < __lo)
return __a / 2 + __b; // not safe to halve b
return __a / 2 + __b / 2; // otherwise correctly rounded
}
#endif // _LIBCPP_STD_VER >= 20