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Release Cosmopolitan v3.6.0
This release is an atomic upgrade to GCC 14.1.0 with C23 and C++23
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1585 changed files with 117353 additions and 271644 deletions
36
third_party/libcxx/__bit/rotate.h
vendored
36
third_party/libcxx/__bit/rotate.h
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@ -20,29 +20,35 @@
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_LIBCPP_BEGIN_NAMESPACE_STD
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template<class _Tp>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14
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_Tp __rotr(_Tp __t, unsigned int __cnt) _NOEXCEPT
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{
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static_assert(__libcpp_is_unsigned_integer<_Tp>::value, "__rotr requires an unsigned integer type");
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const unsigned int __dig = numeric_limits<_Tp>::digits;
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if ((__cnt % __dig) == 0)
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return __t;
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return (__t >> (__cnt % __dig)) | (__t << (__dig - (__cnt % __dig)));
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template <class _Tp>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp __rotr(_Tp __t, int __cnt) _NOEXCEPT {
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static_assert(__libcpp_is_unsigned_integer<_Tp>::value, "__rotr requires an unsigned integer type");
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const unsigned int __dig = numeric_limits<_Tp>::digits;
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if ((__cnt % __dig) == 0)
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return __t;
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if (__cnt < 0) {
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__cnt *= -1;
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return (__t << (__cnt % __dig)) | (__t >> (__dig - (__cnt % __dig))); // rotr with negative __cnt is similar to rotl
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}
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return (__t >> (__cnt % __dig)) | (__t << (__dig - (__cnt % __dig)));
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}
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template <class _Tp>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp __rotl(_Tp __t, int __cnt) _NOEXCEPT {
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return std::__rotr(__t, -__cnt);
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}
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#if _LIBCPP_STD_VER >= 20
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template <__libcpp_unsigned_integer _Tp>
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_LIBCPP_HIDE_FROM_ABI constexpr _Tp rotl(_Tp __t, unsigned int __cnt) noexcept {
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const unsigned int __dig = numeric_limits<_Tp>::digits;
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if ((__cnt % __dig) == 0)
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return __t;
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return (__t << (__cnt % __dig)) | (__t >> (__dig - (__cnt % __dig)));
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Tp rotl(_Tp __t, int __cnt) noexcept {
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return std::__rotl(__t, __cnt);
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}
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template <__libcpp_unsigned_integer _Tp>
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_LIBCPP_HIDE_FROM_ABI constexpr _Tp rotr(_Tp __t, unsigned int __cnt) noexcept {
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Tp rotr(_Tp __t, int __cnt) noexcept {
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return std::__rotr(__t, __cnt);
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}
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