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Math Forum » Discussions » Software » comp.soft-sys.matlab

Topic: Precision after division
Replies: 3   Last Post: Jun 13, 2013 9:40 AM

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Nasser Abbasi

Posts: 5,673
Registered: 2/7/05
Re: Precision after division
Posted: Jun 12, 2013 9:16 PM
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On 6/12/2013 7:39 PM, Wanderson wrote:
> Hi,
>
> I was trying to implement an algorithm to check for prime numbers and I found an interesting question:
>
> Is possible to matlab calculate the division 2147483647/11 and return the decimals ?
>It is always rounded to 1.9523e+008, but I need the decimals place.
>


one way

---------------
r= '2147483647/11';
vpa(r,100)

195225786.09090909090909090909090909090909090909090909090 etc...
-----------------

or

-------------------
r= 2147483647/11;
num2strexact(r)

1.952257860909090936183929443359375e8
--------------

or

--------------------------
format long
r

1.952257860909091e+08
-------------------------


--Nasser



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