newCTFE Status August 2019

[Adam D. Ruppe]

On Saturday, 31 August 2019 at 21:44:38 UTC, Jon Degenhardt wrote:
> By coincidence, I just ran into a case. I'm curious, will 
> newCTFE enable the usage below?

This isn't actually a CTFE engine thing, just the library 
implementation.

The current CTFE engine can do it if you use a different library 
function to do the conversion (Stefan I believe has ported one 
from C to D before and it is ... somewhere...).

The reason it won't do it now is that it calls out to a C 
function to format floating point, and CTFE - new and old - can 
only evaluate D functions.

> Using a similar code construct in a function works fine:
>
> ----------------
> $ cat ctfe_case2.d

this one is not ctfe btw.