Register/timer objects in $random/$arandom function

Hi all,

I came across an inconsistency in the LRM 2.3.1 regarding usage of
register in $random/$arandom system task :
Section "9.13.1 $random and $arandom" :
"The random_seed argument may take one of several forms. It may be
omitted, in which case the simulator
picks a seed. It may be a reg, integer, or time variable, in which case
it is an inout argument; that is,
a value is passed to the function and a different value is returned. The
variable should be initialized by the
user prior to calling $random and only updated by the system function.
The function returns a new 32-bit
random number each time it is called."

However, "Section 7.2.1 Domains" says :

"The domain of a value refers to characteristics of the computational
method used to calculate it. In Verilog-
AMS HDL, a variable is calculated either in the continuous (analog)
domain or the discrete (digital) domain
every time. The potentials and flows described in natures are calculated
in the continuous domain, while register
contents and the states of gate primitives are calculated in the
discrete domain. The values of real and
integer variables can be calculated in either the continuous or discrete
domain depending on how their values
are assigned."

Since a register can be calculated in the continuous domain because
being an out argument of a $random function, that leads to a contradiction.
I think same issue would apply to time objects since they are pure
discrete objects.

Regards.


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