package batsat
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Module Batsat.Lit
Source
Some representation of literals that will be accepted by the SAT solver.
make n
creates the literal whose index is n
. NOTE n
must be strictly positive. Use neg
to obtain the negation of a literal.
Sign: true
if the literal is positive, false
for a negated literal. Invariants: sign (abs x) = true
sign (neg x) = not (sign x)