[clang] [llvm] [APFloat] Add APFloat support for FP4 data type (PR #95392)

[Thorsten Schütt via cfe-commits]

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@@ -69,8 +69,8 @@ enum class fltNonfiniteBehavior {
   // encodings do not distinguish between signalling and quiet NaN.
   NanOnly,
 
-  // This behavior is present in Float6E3M2FN and Float6E2M3FN types,
-  // which do not support Inf or NaN values.
+  // This behavior is present in Float6E3M2FN, Float6E2M3FN and
+  // Float4E2M1FN types, which do not support Inf or NaN values.
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tschuett wrote:

I would enjoy an Oxford comma, but feel free to ignore.

https://github.com/llvm/llvm-project/pull/95392