strager added inline comments.

================
Comment at: include/experimental/memory_resource:433
+        char *__cur_;
+        size_t __align_;
+        size_t __allocation_size() {
----------------
> Eric suggests replacing size_t __align_ with uint8_t __log2_align_. I'm 
> amenable to this idea, but I'd want to know what's the best way to compute 
> the log2 of a user-supplied number.

Perhaps `std::log2p1` could help: 
https://en.cppreference.com/w/cpp/numeric/log2p1


Repository:
  rCXX libc++

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D47111/new/

https://reviews.llvm.org/D47111



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