[R] Problem with products in R ?

[peter dalgaard]

On 04 May 2014, at 16:13 , Jorge I Velez <jorgeivanvelez at gmail.com> wrote:

> Try
> 
> options(digits = 22)
> 168988580159 * 36662978
> # [1] 6195624596620653568

But the last 5 digits are supposed to match those of 

>  80159 * 62978 
[1] 5048253502

so the result is off by 66. Further analysis will likely reveal rounding to the nearest multiple of 1024. As I said, this is hardly surprising. 

> 
> HTH,
> Jorge.-
> 
> 
> 
> On Sun, May 4, 2014 at 10:44 PM, ARTENTOR Diego Tentor <
> diegotentor71 at gmail.com> wrote:
> 
>> Trying algorithm for products with large numbers i encountered a difference
>> between result of 168988580159 * 36662978 in my algorithm and r product.
>> The Microsoft calculator confirm my number.
>> 
>> Thanks.
>> 
>> 
>> 
>> 
>> --
>> 
>> 
>> *        Gráfica ARTENTOR          *
>> 
>> de Diego L. Tentor
>> Echagüe 558
>> Tel.:0343 4310119
>> Paraná - Entre Ríos
>> 
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> 
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-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com