[libcxx-commits] [libcxx] [libc++] Complete `<charconv>` for 64-bit `long double` platforms (PR #117125)

[Nikolas Klauser via libcxx-commits]

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@@ -1231,6 +1231,12 @@ typedef __char32_t char32_t;
 #    define _LIBCPP_HAS_EXPLICIT_THIS_PARAMETER 0
 #  endif
 
+#  if defined(_MSC_VER) || __SIZEOF_LONG_DOUBLE__ == __SIZEOF_DOUBLE__
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philnik777 wrote:

Is it guaranteed that if they have the same size they have the same representation?

https://github.com/llvm/llvm-project/pull/117125