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master > master: codego - nnf für implies, iff

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This commit is contained in:
RD 2021-05-15 00:05:42 +02:00
parent 6d774a6a4c
commit 3b1c190543
1 changed files with 12 additions and 1 deletions
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13
codego/aussagenlogik/recursion/recursion_nnf.go
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@ -64,9 +64,20 @@ func NNF(fml formulae.Formula) formulae.Formula {
} }
} else if fml.IsImplication() { } else if fml.IsImplication() {
return formulae.FormulaPair{ return formulae.FormulaPair{
Pos: formulae.Implies(prevPos[0], prevPos[1]), Pos: formulae.Disjunction2(prevNeg[0], prevPos[1]),
Neg: formulae.Conjunction2(prevPos[0], prevNeg[1]), Neg: formulae.Conjunction2(prevPos[0], prevNeg[1]),
} }
} else if fml.IsDoubleImplication() {
return formulae.FormulaPair{
Pos: formulae.Conjunction2(
formulae.Disjunction2(prevNeg[0], prevPos[1]),
formulae.Disjunction2(prevNeg[1], prevPos[0]),
),
Neg: formulae.Disjunction2(
formulae.Conjunction2(prevPos[0], prevNeg[1]),
formulae.Conjunction2(prevPos[1], prevNeg[0]),
),
}
} else { } else {
panic("Could not evaluate expression!") panic("Could not evaluate expression!")
} }