Random number generation

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Hi All,
           I have a few queries regarding Random Number generation in R.
           according to the help(Random.User) i defined my own functions for
That's help("Random.user")...
user_unif_rand and user_norm_rand (uniform and normal distribution)

           But what i figured out was even when i call rexp,rpois,rgeom and
other distributions they were routed via user_unif_rand.
1.  Does this mean that for all types of distribution it generates an
Uniform distribution and transforms to the requested type?

Also   surprisingly even rnorm which i hoped to route via user_norm_rand
was calling user_unif_rand...

rnorm(1)
inside user_unif_rand//printf and
inside user_unif_rand
[1] 0.5973648

Please help me out understanding this...
I think you didn't do things properly, but you didn't show us what you 
did.  When I run the sample code in help("Random.user"), adding an 
Rprintf() call to the user_norm_rand function, I see it being called.

Duncan Murdoch
2. Our goal is to link with an vectorized Random number generator library
for our multi-core architecture.
    So is it enough if we define user_unif_rand function alone and will it
take care of all distributions?

Thanks in Anticipation,
R. Subramanian

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