[fpc-pascal] Super Large Integer Math Calculations

[Stuart Cox]

Have a look at http://www.wolfgang-ehrhardt.de/


On 2017-07-11 6:05 AM, noreply at z505.com wrote:
> On 2017-07-07 17:08, Bart wrote:
>> On 7/7/17, noreply at z505.com <noreply at z505.com> wrote:
>>
>>> For integers beyond 64 bit, or even beyond 32 bit on a 64 bit machine,
>>> why can't the math be broken down into peices the way a human does 
>>> it on
>>> paper, and then theoretically any number can be added and subtracted,
>>> even if it is beyond 32/64 bit?
>>>
>>> Example:
>>>
>>> type TSuperLargeInt = string;
>>>
>>> var
>>>    i, j: TSuperLargeInt;
>>>    output: TSuperLargeInt;
>>> begin
>>>    i := '100000000000000000009';
>>>    j := '100000000000000000001';
>>>    output := AddLargeInts(i,j);
>>>    writeln(output);
>>> end.
>>
>> http://svn.code.sf.net/p/flyingsheep/code/trunk/wtf/ncalc.pp does 
>> exactly that
>> (all dependenies are also found at
>> http://svn.code.sf.net/p/flyingsheep/code/trunk/wtf).
> ...
>
>> It's not lightning fast, but there is room for optimization I guess.
>>
>> Bart
>
> I knew someone had already invented this!
> Any idea if it does square roots, and, decimal point numbers too..
>
> Or, what math can it "not" do.. things like sin/tan/cos, or strange 
> maths..
>
> Probably a complex question requiring a complex answer
>
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