Decimal string to floating point conversion with correct half-to-even rounding

[9il]

On Sunday, 5 July 2020 at 08:15:53 UTC, Walter Bright wrote:
> On 7/5/2020 12:24 AM, 9il wrote:
>> On Sunday, 5 July 2020 at 06:23:35 UTC, Walter Bright wrote:
>>> On 7/4/2020 8:09 PM, 9il wrote:
>>> Does the float parsing code require bignum?
>> Yes. The decimal float parsing requires big integer arithmetic 
>> and software
>
> Arbitrary precision or simply a fixed amount of more precision?

Up to 2^^16384 - 1.