[R] .Random.seed for the Mersenne Twister

[Luca Passalacqua]

Dear R users,

 inspecting  .Random.seed for the Mersenne Twister (MT) I find (many)
negative values for the
624 values of the initial state of the generator.
It seems to me that this is a bug (an unsigned integer mapped to a signed
integer ?),
since, to my understanding, the R version of MT should be working with
32-bits unsigned long.
Moreover, this prevents starting the generator by setting .Random.seed to
user provided
values.
Could someone please provide some insight to this issue ?
Many thanks,

Luca Passalacqua


> RNGkind('default')> RNGkind()[1] "Mersenne-Twister" "Inversion"       > set.seed(1)> .Random.seed  [1]         403         624  -169270483  -442010614  -603558397  ...



-- 
Luca Passalacqua
Department of Statistics
University of Rome "La Sapienza"
Viale Regina Elena, 295
00161 Rome (Italy)
luca.passalacqua using uniroma1.it

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