Alert FAILURE RandomPkg

[slaweksiluk]

During tests with usage of RandomPType sometimes I receive following error:

%% Alert FAILURE RandomPkg.(RandIntV | RandRealV | RandTimeV): Unique > number of values available at 35 ns

%% Alert Stop Count on FAILURE reached at 35 ns 
%% DONE  FAILED  AlertLogTop  Total Error(s) = 1  Failures: 1  Errors: 0  Warnings: 0  at 35 ns

what does it mean?

[JimLewis]

It would be easier to comment if you would share what you are trying to do and your code.

RandIntV | RandRealV | RandTimeV are overloaded. The simplest form is:

-- Generate 10 integer values in the range 0 to 255 
IntV(1 to 10) := RV.RandIntV(0, 255, 10) ;

However there are times when you want to not repeat either the last value or some number of the previous values. This is handled by:

-- Generate 10 integer values in the range 0 to 255, do repeat the last value 
IntV(1 to 10) := RV.RandIntV(0, 255, 1, 10) ;

What happened in your case is that you asked it go create more unique values than are in the set of numbers you are selecting between - and hence, it is not possible to satisfy your request. The following would also generate the same error:

IntV(1 to 10) := RV.RandIntV(0, 4, 10, 10) ;

This is discussed in the user guide section 7 Randomizing Sets of Values.