[libcxx-commits] [PATCH] D108250: [libc++][spaceship] Implement std::tuple::operator<=>

Kent Ross via Phabricator via libcxx-commits libcxx-commits at lists.llvm.org
Wed Sep 22 14:09:25 PDT 2021


mumbleskates added inline comments.


================
Comment at: libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/three_way.pass.cpp:107
+    typedef std::tuple<double> T2;
+    // Comparisons with NaN and non-NaN are non-constexpr in GCC, so both sides must be NaN
+    assert((T1(std::numeric_limits<float>::quiet_NaN()) <=> T2(std::numeric_limits<double>::quiet_NaN()))
----------------
Quuxplusone wrote:
> Throughout, please use `constexpr double nan = std::numeric_limits<double>::quiet_NaN();` for readability.
> This will eliminate many line-breaks.
> In the tests where you use both float and double nan, I think it's fine to just have the one variable, because `(float)nan` is still going to be a float-typed NaN value.
This is already done, to be clear.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D108250/new/

https://reviews.llvm.org/D108250



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