Some time ago I requested something on .D, but it was ignored.
I'm interested in why this is so.
It was only a small request, maybe not fitting for .D but dsourse/phobos
said that was the place for such things.
(Maybe it was unintelligible again?)

---
Could an option be added to the formatting to elide trailing zero's for %f ? That way it is possible to create an more optimal formatting for which the following holds:

float f;
s = format(f);
float f2 = to!(float)(s);
assert(f==f2);

The formatting I'm trying to get can be seen here (decimal):
http://www.h-schmidt.net/FloatApplet/IEEE754.html
try 0.1, 0.0001, 10 & 10000000

%g fails to format like this because it uses %f for as small as 10^-5, thus loosing precision for floats with leading zero's, like 0.0001234567

It would be even nicer to have this kind of formatting added to std.format!
---

With little effort the default float format even could be lossless, wouldn't that be nice?

Saaa wrote:
> Some time ago I requested something on .D, but it was ignored.
> I'm interested in why this is so.
> It was only a small request, maybe not fitting for .D but dsourse/phobos said that was the place for such things.
> (Maybe it was unintelligible again?)

The place (.D) was right, but I think your timing was bad. :) You posted it in the middle of the (very heated) properties debate, and people were way too preoccupied with that to care about other things.

You could try the newsgroup again if you feel it is something that needs discussion, or you could simply post an enhancement request in Bugzilla:

  http://d.puremagic.com/issues/


> ---
> Could an option be added to the formatting to elide trailing zero's for %f ?
> That way it is possible to create an more optimal formatting for which the
> following holds:
> 
> float f;
> s = format(f);
> float f2 = to!(float)(s);
> assert(f==f2);
> 
> The formatting I'm trying to get can be seen here (decimal):
> http://www.h-schmidt.net/FloatApplet/IEEE754.html
> try 0.1, 0.0001, 10 & 10000000
> 
> %g fails to format like this because it uses %f for as small as 10^-5,
> thus loosing precision for floats with leading zero's, like 0.0001234567
> 
> It would be even nicer to have this kind of formatting added to std.format!
> ---
> 
> With little effort the default float format even could be lossless, wouldn't that be nice?

I think it's a good idea. :)

-Lars

"Lars T. Kyllingstad" <public@kyllingen.NOSPAMnet> wrote in message news:h5tsuu$bc4$1@digitalmars.com...
> Saaa wrote:
>> Some time ago I requested something on .D, but it was ignored.
>> I'm interested in why this is so.
>> It was only a small request, maybe not fitting for .D but dsourse/phobos
>> said that was the place for such things.
>> (Maybe it was unintelligible again?)
>
> The place (.D) was right, but I think your timing was bad. :) You posted it in the middle of the (very heated) properties debate, and people were way too preoccupied with that to care about other things.
>
> You could try the newsgroup again if you feel it is something that needs discussion, or you could simply post an enhancement request in Bugzilla:
>
>   http://d.puremagic.com/issues/

I always thought bugzilla was only for bugs..

>
>
>> ---
>> Could an option be added to the formatting to elide trailing zero's for
>> %f ?
>> That way it is possible to create an more optimal formatting for which
>> the
>> following holds:
>>
>> float f;
>> s = format(f);
>> float f2 = to!(float)(s);
>> assert(f==f2);
>>
>> The formatting I'm trying to get can be seen here (decimal):
>> http://www.h-schmidt.net/FloatApplet/IEEE754.html
>> try 0.1, 0.0001, 10 & 10000000
>>
>> %g fails to format like this because it uses %f for as small as 10^-5, thus loosing precision for floats with leading zero's, like 0.0001234567
>>
>> It would be even nicer to have this kind of formatting added to std.format!
>> ---
>>
>> With little effort the default float format even could be lossless, wouldn't that be nice?
>
> I think it's a good idea. :)
Yay :)
>
> -Lars
> 

Saaa wrote:
> "Lars T. Kyllingstad" <public@kyllingen.NOSPAMnet> wrote in message news:h5tsuu$bc4$1@digitalmars.com...
>> Saaa wrote:
>>> Some time ago I requested something on .D, but it was ignored.
>>> I'm interested in why this is so.
>>> It was only a small request, maybe not fitting for .D but dsourse/phobos said that was the place for such things.
>>> (Maybe it was unintelligible again?)
>> The place (.D) was right, but I think your timing was bad. :) You posted it in the middle of the (very heated) properties debate, and people were way too preoccupied with that to care about other things.
>>
>> You could try the newsgroup again if you feel it is something that needs discussion, or you could simply post an enhancement request in Bugzilla:
>>
>>   http://d.puremagic.com/issues/
> 
> I always thought bugzilla was only for bugs..

Nope, enhancement requests go in there too. :) Make sure to select "enhancement" in the "severity" dropdown list.

-Lars

Reply to Saaa,

> "Lars T. Kyllingstad" <public@kyllingen.NOSPAMnet> wrote in message
> news:h5tsuu$bc4$1@digitalmars.com...
> 
>> http://d.puremagic.com/issues/
>> 
> I always thought bugzilla was only for bugs..
> 

IIRC when it was set up there was a bit of debate about that and items in it got changed from "bugs" to "issues" to denote that distinction.

filed
http://d.puremagic.com/issues/show_bug.cgi?id=3248