[phobos] CustomFloat

David Simcha dsimcha at gmail.com
Fri Aug 27 05:48:36 PDT 2010


  Yes.  CustomFloat now works well.

On 8/27/2010 1:59 AM, Andrei Alexandrescu wrote:
> My understanding is that CustomFloat is now in good shape. Is that 
> correct?
>
> Thanks,
>
> Andrei
>
> On 6/8/10 1:04 PDT, Lars Tandle Kyllingstad wrote:
>> On Sat, 2010-06-05 at 10:42 -0400, David Simcha wrote:
>>> Robert Jacques (who I know offline and, in fact, was the person who
>>> introduced me to D) has massively improved/debugged CustomFloat and
>>> asked me to post it for review and commit it to Phobos.  See the
>>> attached file.  If everyone's happy with it, I'll replace the current
>>> impl in std.numeric and check it in.
>>
>> It's awesome that someone's working on this -- I've seen people
>> complaining about the state of CustomFloat several times.  (I think the
>> last time was when we discussed the possibility of using an 80-bit
>> CustomFloat in Masahiro's msgpack library, to wrap 80-bit reals on
>> systems that don't support them.)
>>
>> That said, I'm having some problems with it.  Looking at the code and
>> documentation, the following should be correct usage:
>>
>>          alias CustomFloat!16 float16;
>>
>> However, compiling it with DMD 2.046, I get the errors
>>
>>          customfloat.d(430): Error: template instance ToBinary!(real)
>>          does not match template declaration ToBinary(F) if
>>          (is(CustomFloat!(F.sizeof * 8)))
>>          customfloat.d(430): Error: ToBinary!(real) is used as a type
>>          ...
>>
>> -Lars
>>
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