good reasons not to use D?

[Russel Winder via Digitalmars-d-learn]

On Sat, 2015-10-31 at 15:41 +0000, tcak via Digitalmars-d-learn wrote:
> On Saturday, 31 October 2015 at 14:37:23 UTC, rumbu wrote:
> > On Friday, 30 October 2015 at 10:35:03 UTC, Laeeth Isharc wrote:
> > > I'm writing a talk for codemesh on the use of D in finance.
> > > 
> > > Any other thoughts?
> > 
> > For finance stuff - missing a floating point decimal data type. 
> > Things like 1.1 + 2.2 = 3.3000000000000003
> 
> I always thought that this type of arithmetic operations can be 
> solved with BigInt, but never tried it. Since the issue is 
> related to IEEE standard, a simulated (not supported by hardware 
> directly) data type might be required.

In that std.bigint.BigInt provides the accuracy, yes it does suffice.
But it is slow. As far as I am aware only IBM Big Iron (aka mainframes,
aka z-Series) has hardware decimal floating point these days. (Even
though 1970s and 1980s microprocessors had the feature.)

-- 
Russel.
=============================================================================
Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder at ekiga.net
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