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- Boolean.c Source code for boolean expression parser.
- Boolean Executable ...
- Truth.c Source code for Truth Table Generator
- Truth Executable ...
-
-
- Boolean: A recursive descent boolean expression parser.
-
- Boolean accepts literal arguments such as 1|1, 0&1&(1|-1) etc...
- It will parse and evaluate them.
-
- Run boolean with "boolean [expression_1] [expression_2] ..."
-
- Example: To evaluate (-1&0) type:
-
- boolean (-1&0)
-
- --------------------------------------------------------------------
-
- Valid Operations:
-
- The following are supported:
-
- - Not
- & And
- | Or
- @ X-Or
- * Nand
- + Nor
-
- ====================================================================
- Truth: A recursive descent boolean expression parser & truth table
- generator.
-
- Truth functions like boolean except for the fact that truth generates
- a truth table. Integer literals are valid but nothing meaningful
- will be generated if there are no variables in the expression.
-
- Truth A Should generate:
-
- A Value
- -------------------------------------
- 0 0
- 1 1
-
- Truth -A Should generate:
-
- A Value
- -------------------------------------
- 0 1
- 1 0
-
- Valid Operations:
-
- Same as for boolean with the inclusion of variables as valid arguments.
-
- Names like ABCDEF are valid but the program sees this variable as 'A'
- thus ABCDEF = ANOTHERVAR. Also, everything is shifted to uppercase
- so a = A. I would suggest sticking to the 26 alphabetical variables.
-
- ======================================================================
-
- Credit:
-
- Herbert Schildt's"C The Complete Reference" has a section on
- ^^^^^^^^^^^^^^^
- (Now that's a programmer's name if I ever saw one)
-
- Expression parsing that I found to be useful. I structured some of
- the code after his mathematical expression parser but not too much
- of it. His parser seemed the most straightforward I had seen so
- hopefully this rubbed off into mine somewhat.
-
- Recompile the program with:
-
- lc -L boolean
- or
- lc -L truth
-
- People using compilers other than Lattice are on their own but there
- should not be too many problems since none of the code is all that
- tricky.
-
- Anyways if any questions arise about anything then simply send mail
- to 'pm0@beach.cis.ufl.edu'.
-
- Hope these programs help do stuff like generate Karnaugh maps and
- such. Maybe the next version will actually generate the Karnaugh
- Map for you... Who knows, no promises.
-
- Patrick Martin
-