[SOLVED] How does one read iccr expression tables

beeflobill · Jun 7, 2012

I'm trying to read the expression tables given to my by iccr, but I do not see what I would expect from a Boolean table. I'm even confused by the tables in the ICC User Guide.

For example, the documentation had this table for the equation b & (c | d)

Code:

  b  & (c | d)
<1>    <2> <3>

hit  |  rval  |  <1> <2> <3>
----------------------------
  1  |    1   |   1    -    1
  1  |    1   |   1    1    1
  0  |    0   |   -    0    0
  1  |    0   |   0    -    -

I would expect to see 8 rows from a typical Boolean table in this case. How do they get away with 4, and what do the dashes mean?

andyme · Jun 7, 2012

"-" means don't care, or to say the value could be either 0 or 1. the table in your case covers all 8 possible combinations.

beeflobill said:
I'm trying to read the expression tables given to my by iccr, but I do not see what I would expect from a Boolean table. I'm even confused by the tables in the ICC User Guide.

For example, the documentation had this table for the equation b & (c | d)

Code:

b & (c | d) <1> <2> <3> hit | rval | <1> <2> <3> ---------------------------- 1 | 1 | 1 - 1 1 | 1 | 1 1 1 0 | 0 | - 0 0 1 | 0 | 0 - -

I would expect to see 8 rows in a typical Boolean table. How do they get away with 4, and what do the dashes mean?

[SOLVED] How does one read iccr expression tables

beeflobill

Member level 3

andyme

Newbie level 2

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[SOLVED] How does one read iccr expression tables

beeflobill

Member level 3

andyme

Newbie level 2

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