Hi Richard,

> This isn't a full review, but I do have a question: is this really specific 
> to Darwin?  or is it really generic aarch64 code?  If the former, then the 
> file name is not right and it should reflect the darwin-specific nature of 
> the contents.  If the latter, then I wonder why most other fortran targets 
> don't seem to have specific implementations of this.

The code is not specific to Darwin, but right now I chose to only enable on 
Darwin because:
- All glibc targets are covered already by using glibc <fenv.h> function calls
- I don’t know if there are other aarch64 targets that exist, support Fortran 
and IEEE, but don’t have glibc

I’d suggest other non-glibc aarch64 targets could be added to the support and 
enable this code, but I don’t want to do it unless it’s been tested there. IEEE 
support is optional in Fortran, so I suggest we keep it “opt-in”: targets where 
it’s known to work enable it, but it’s off by default on other targets.

I hope this explains the rationale.

FX

Reply via email to