RE: [sv-ec] $urandom in dynamic method

$urandom uses the RNG (Random Number Generator) of the executing thread
to get the next
random number. Seeding the RNG of a thread is described as follows:
"When a new dynamic 
thread is created, its RNG is seeded with the next random value from its
parent thread. This 
property is called hierarchical seeding. When a static thread is
created, its RNG is seeded 
with the next value from the initialization RNG of the module instance,
interface instance, 
program instance, or package containing the thread declaration."
(18.14.1)
 
If $urandom is called with an argument (options). The argument value is
used to initialize (seed) 
the RNG of the executing thread.
 
- Ray.


________________________________

	From: owner-sv-ec@server.eda.org
[mailto:owner-sv-ec@server.eda.org] On Behalf Of Daniel Mlynek
	Sent: Monday, December 21, 2009 6:06 AM
	To: sv-ec@server.eda.org
	Subject: [sv-ec] $urandom in dynamic method
	
	
	which seed should be used by  $urandom used in dynamic method
call (object seed vs module instance seed vs thread seed)?
	which stability scheme (thread, vs object) should be used in
such case?
	 
	class C;
	    function int rand;
	       return $urand;
	    endfunction
	endclass
	 
	 
	DANiel

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