Random number generator used in 'runif'

Dear list,

For the implementation of a particular optimization algorithm it is
very important the random number generator.

I would like to know if somebody could tell me what is the random
number generator used by default in the 'runif' function.

From the help page of 'runif' and '.Random.seed' I guess that the

default algorithm is 'Mersenne-Twister', but I would be really
grateful if somebody with experience in random number generators could
confirm that or tell me what is the method actually used.

Thanks in advance,

Mauricio Zambrano-Bigiarini

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Water Resources Unit
Institute for Environment and Sustainability
Joint Research Centre, European Commission
webinfo    : http://floods.jrc.ec.europa.eu/
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