================
@@ -5865,257 +5933,2297 @@ DoubleAPFloat frexp(const DoubleAPFloat &Arg, int
&Exp,
std::move(Second));
}
-} // namespace detail
-
-APFloat::Storage::Storage(IEEEFloat F, const fltSemantics &Semantics) {
- if (usesLayout<IEEEFloat>(Semantics)) {
- new (&IEEE) IEEEFloat(std::move(F));
- return;
- }
- if (usesLayout<DoubleAPFloat>(Semantics)) {
- const fltSemantics& S = F.getSemantics();
- new (&Double) DoubleAPFloat(Semantics, APFloat(std::move(F), S),
- APFloat(APFloatBase::IEEEdouble()));
- return;
- }
- llvm_unreachable("Unexpected semantics");
-}
+// class HexFloatArith implements HFP arithemtic using the conventions
+// and approaches of the arith library, and matches the behaviour
----------------
hubert-reinterpretcast wrote:
Can you expand the comment. For example, elaborate by saying:
> the "arith" library used by the IBM XL compiler
https://github.com/llvm/llvm-project/pull/179771
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