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Small Formulas for Large Programs: On-line Constraint ...

Small Formulas for Large Programs: On-line Constraint ...

An Example enum op_type

An Example enum op_type {ADD=0, SUBTRACT=1, MULTIPLY=2, DIV=3}; int perform_op(op_type op, int x, int y) { int res; if(op == ADD) res = x+y; else if(op == SUBTRACT) res = x-y; else if(op == MULTIPLY) res = x*y; else if(op == DIV) { assert(y!=0); res = x/y; } else res = UNDEFINED; } return res; In simplified form: op 6= 3 _ y 6= 0 No irrelevant predicates, much more concise

Now that this example has convinced you simplification is a good idea, how do we actually do it?

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