From: owner-stds-1450-4@majordomo.ieee.org on behalf of
jim_oreilly@agilent.com
Sent: Tuesday, November 04, 2003 4:46 PM
To: stds-1450-4@majordomo.ieee.org
Subject: stds-1450.4: suggested pre/post/exit actions


Hi, all,

Following Ernie's lead (and his format), here's what I see for the pre/post/exit
actions.

Assumptions:
1.  Integer and boolean symbols.  To this, I would also add reals (floats).
    I think these symbols will represent test program variables (globals?)
    and/or other STIL block variables - i.e., timing/levels/spec values).
    If the integer/boolean/(real?) symbols are test program variables, do
    we also want to include arrays?  What about structs?

2.  Logical expressions/operators: ! && || == != > >= < <= ()

    To Ernie's list, I would also add additional logical bitwise operators
    & | ^ << >> ~ and arithmetic operators  + - * / % ++ --

    It might also be useful to include the assignment operators
      += -= *= /* %= &= |= <<= >>=
    Do we also want to include the ternary operators (expr1)?(expr2):(expr3) ?

3.  Expressions can be combinations of logical and arithmetic operations.

Actions: (actions can be a list of one or more actions)
1.  Assignment (pre/post/exit)
2.  Binning (pre/post/exit)
3.  Conditional execution (pre).  If bypassing, need a way to specify which
    exit path will be taken.
4.  Conditional assignment (pre/post/exit)
5.  Conditional binning (pre/post/exit)
6.  Conditional actions (pre/post/exit) - a way to conditionally execute an
    action in a list of actions.

I haven't included inversions (conditional or unconditional) because I'm
including the inversion operator ~ as one of my assumptions.

I also haven't included in the actions a way to call other tests - in general,
if you want to do that, subflows (which should be freely substitutable for a
test in the module or body of a flow-node) can be used - or the test(s) you 
want to call can be placed in the flow-graph following the flow-node in which
you wanted to place an action to call such a test.

Hopefully, this will get us started tomorrow.

Jim

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Jim O'Reilly                            Tel:   408-553-2453
Agilent Technologies, M/S 53L-NE        Fax:   503-603-1865
5301 Stevens Creek Blvd
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