Yes, I got that argument, and that is exactly what I was arguing against. You cannot and should not parse the literal double `1e-300` differently dependent on w

Yes, I got that argument, and that is exactly what I was arguing against. You cannot and should not parse the literal double `1e-300` differently dependent on which function it is later passed to. This is what `big"1e-300"` or `BigFloat("1e-300")` is for, where the BigFloat constructor parses the string.