[phobos] CustomFloat

[Andrei Alexandrescu]

Yes please. This is great work. Sorry for not saying this later.

Andrei

On 06/09/2010 09:29 PM, David Simcha wrote:
> I can't reproduce this at all.  At any rate, I'm going to check this in
> because there were no other issues, I want to get it in for 2.047, and
> it's a HUGE improvement over what was there before even if it's not
> perfect. If you can give some hints on how to reproduce this, please let
> me know.
>
> On 6/8/2010 4:04 AM, 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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