Excel's calculation engine

[GJL]

Is Excel's calculation engine still written in assembler? What about the built-in functions that aren't in the add-ins such as the Analysis ToolPak?


Disclaimer: I asked the same question here a while back:

Excel's calculation engine still written in assembler? | Microsoft Community Hub

Is Excel's calculation engine still written in assembler language? What about the built-in functions that aren't in the add-ins such as the Analysis ToolPak?

techcommunity.microsoft.com

I'm hoping to hear from someone who knows, not just speculation.