[libcxx-commits] [PATCH] D65721: Make rotate a constexpr

[Louis Dionne via Phabricator via libcxx-commits]

ldionne requested changes to this revision.
ldionne added inline comments.
This revision now requires changes to proceed.
Herald added a subscriber: broadwaylamb.


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Comment at: libcxx/include/algorithm:1862
 {
+#ifdef is_constant_evaluated
+    if (is_constant_evaluated())
----------------
This doesn't work because `is_constant_evaluated` is not a macro. We have the macro `_LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED` that tells you whether `std::is_constant_evaluated` is supported.


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  https://reviews.llvm.org/D65721/new/

https://reviews.llvm.org/D65721