On Tuesday, 7 April 2015 at 18:43:06 UTC, Vladimir Panteleev
wrote:
On Tuesday, 7 April 2015 at 15:55:24 UTC, Kai Nacke wrote:
I started to work on cent/ucent support in LDC (and possible
in upstream DMD). Here is the current state:
Hi, I appreciate all the work you're doing for LDC, but isn't
ucent better implemented as a library type (e.g. as a FixNum
struct for arbitrary fixed-size integers)? With the
deprecation/removal of complex numbers, octal literals, and hex
strings, I'm not sure if cent/ucent would pass the same
inclusion requirements that those features didn't.
This doesn't necessarily obsolete your work - we could remove
ucent from the language specification, but still expose the
backend feature in some way that FixNum could use for added
efficiency.
If there's already been a discussion about removing cent/ucent
and I missed it, my apologies.
Hi Vladimir,
for me this was a low-hanging fruit. In many cases I only had to
add the special cases for max and min values. If it is not
included then it is no disaster.
My motivation for the implementation is
- implementation of 128bit CAS
- evaluation of performance of bigintnoasm with 128bit vs. 64bit
on X64
Regards,
Kai
