Teledyne LeCroy Voyager Exerciser Generation Script Language Manual - Manual (Page 123)

Teledyne LeCroy Voyager USB 3.0 Exerciser Generation Script Language Reference Manual
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10.16 RAND Token
You can use a RAND token in places where numeric literals are used to insert pseudo-random
numbers in the range 0 to 0x7fff.
Note: By default, RAND uses a different integer seed value every time the script is compiled. You
can set the seed using the RandSeed setting. Ffor the RandSeed setting description, see the
Generation Setting topic.
Example
Main
{
# The packet template 'SOME_PKT_TEMPLATE' is declared later.
Send SOME_PKT_TEMPLATE
{
Field0 = {
00 RAND RAND RAND RAND 00 } # Set random hex
# stream.
}
x =
RAND # Assign a random value to the numeric variable.
}
10.17 RandStream( n ) Primitive
The RandStream( n ) primitive is a utility, based on the RAND token, that produces a random
byte stream, where n is the number of bytes in the stream.
Note: For a description of random seeding, see the Note in the
Rand Token section.
Example
Main
{
# The packet template 'SOME_PKT_TEMPLATE' is declared later.
Send SOME_PKT_TEMPLATE
{
Fieldof32bytes = RandStream(32)
# Set a random 32-byte stream.
}
}