[clang] [llvm] [APFloat] Add APFloat support for FP6 data types (PR #94735)

[Jakub Kuderski via llvm-commits]

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@@ -68,6 +68,10 @@ enum class fltNonfiniteBehavior {
   // `fltNanEncoding` enum. We treat all NaNs as quiet, as the available
   // encodings do not distinguish between signalling and quiet NaN.
   NanOnly,
+
+  // This behavior is present in Float6E3M2FN and Float6E2M3FN types.
+  // There is no representation for Inf or NaN.
+  NoNanInf,
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kuhar wrote:

> FiniteOnly
I find this one most descriptive.

https://github.com/llvm/llvm-project/pull/94735