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

[Matt Arsenault via llvm-commits]

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@@ -47,6 +47,10 @@ static std::string convertToString(double d, unsigned Prec, unsigned Pad,
   return std::string(Buffer.data(), Buffer.size());
 }
 
+static bool hasNanOrInf(APFloat::Semantics S) {
+  return (S != APFloat::S_Float6E3M2FN) && (S != APFloat::S_Float6E2M3FN);
+}
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arsenm wrote:

Probably would be useful as a helper somewhere in APFloat or Semantics 

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