Implement std::ranges::less without std::less
* include/bits/range_cmp.h (ranges::less::operator()): Inline the logic from std::less::operator() to remove the dependency on it. From-SVN: r277150
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@ -1,3 +1,8 @@
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2019-10-18 Jonathan Wakely <jwakely@redhat.com>
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* include/bits/range_cmp.h (ranges::less::operator()): Inline the
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logic from std::less::operator() to remove the dependency on it.
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2019-10-17 Jonathan Wakely <jwakely@redhat.com>
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* doc/doxygen/user.cfg.in (INPUT): Add new C++17 and C++20 headers.
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@ -121,10 +121,19 @@ namespace ranges
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noexcept(noexcept(std::declval<_Tp>() < std::declval<_Up>()))
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{
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if constexpr (__detail::__less_builtin_ptr_cmp<_Tp, _Up>)
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return std::less<const volatile void*>{}(
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static_cast<const volatile void*>(std::forward<_Tp>(__t)),
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{
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#ifdef __cpp_lib_is_constant_evaluated
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if (std::is_constant_evaluated())
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return __t < __u;
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#endif
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auto __x = reinterpret_cast<__UINTPTR_TYPE__>(
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static_cast<const volatile void*>(std::forward<_Tp>(__t)));
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auto __y = reinterpret_cast<__UINTPTR_TYPE__>(
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static_cast<const volatile void*>(std::forward<_Up>(__u)));
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return std::forward<_Tp>(__t) < std::forward<_Up>(__u);
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return __x < __y;
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}
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else
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return std::forward<_Tp>(__t) < std::forward<_Up>(__u);
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}
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using is_transparent = __is_transparent;
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