On Wed, 08 Apr 2009 22:54:13 +0400, Paul D. Anderson
<paul.d.removethis.ander...@comcast.andthis.net> wrote:
Denis Koroskin Wrote:
On Wed, 08 Apr 2009 21:54:02 +0400, Frank Torte
<frankt123...@gmail.com> wrote:
> Paul D. Anderson Wrote:
>
>> Is there an active project to develop arbitrary-precision floating
>> point numbers for D?
>>
>> I've got a little extra time at the moment and would like to
contribute
>> if I can. I've done some work in floating point arithmetic and would
be
>> willing to start/complete/add to/test/design/etc. such a project.
What
>> I hope NOT to do is to re-implement someone else's perfectly adequate
>> code.
>>
>> If no such project exists I'd like to start one. If there are a bunch
>> of half-finished attempts (I have one of those), let's pool our
efforts.
>>
>> I know several contributors here have a strong interest and/or
>> background in numerics. I'd like to hear inputs regarding:
>>
>> a) the merits (or lack) of having an arbitrary-precision floating
point
>> type
>>
>> b) the features and functions that should be included.
>>
>> Just to be clear -- I'm talking about a library addition here, not a
>> change in the language.
>>
>> Paul
>>
>>
>
> When you can use a number in D that is more than the number of atoms
in
> the known universe why would you want a bigger number?
I'd like to calculate pi with up to 20000 valid digits. Or a square
root of 2 with the same precision. How do I do that?
I've got some Java code that will do that -- not here with me at work.
Of course, it uses Java's BigDecimal class -- that's what D doesn't seem
to have.
Paul
That was exactly my point - we need some kind of a Java BigDecimal class for
such arithmetics in D.
So my verdict: go for it!
