[Scilab-users] Bitget for int64/uint64

[Samuel Gougeon]

With the current implementation, you will get the right result with the 
following:

bitget([b b], uint64(1:64))(1,:)

  * use a non scalar x (pad it with anything if scalar)
  * use a non scalar pos (idem)
  * use a pos with the same int64 or uint64 type than x

Samuel

Le 27/02/2020 à 16:17, JLan a écrit :
> I wonder if i have misunderstood the documentation for bitget, or if this is
> a bug? It seems to me that numbers > 2^53 are still not handled correctly.
> --> a=uint64(2^61)
>   a  =   2305843009213693952
> --> b=uint64(2^61)+1
>   b  =   2305843009213693953
> --> bitget(a,1:64)
>   ans  =
>           column 1 to 32
>    0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
> 0  0  0  0  0  0  0
>           column 33 to 64
>    0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
> 0  0  0  0  1  0  0
>
> --> bitget(b,1:64)
>   ans  =
>           column 1 to 32
>    0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
> 0  0  0  0  0  0  0
>           column 33 to 64
>    0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
> 0  0  0  0  1  0  0
>
>
>
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