[clang] [Clang] Add constexpr eval for cmath builtins (PR #194327)

[via cfe-commits]

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@@ -700,6 +707,348 @@ static inline Floating abs(InterpState &S, const Floating &In) {
   return Output;
 }
 
+static bool interp__builtin_ceil(InterpState &S, CodePtr OpPC,
+                                 const InterpFrame *Frame,
+                                 const CallExpr *Call) {
+  const Floating &Val = S.Stk.pop<Floating>();
+  Floating Result = S.allocFloat(Val.getSemantics());
+  APFloat F = Val.getAPFloat();
+  unsigned BuiltinOp = Call->getBuiltinCallee();
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Serosh-commits wrote:

YUP! will do it Thanks

https://github.com/llvm/llvm-project/pull/194327