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Rewrite xor, =>, and <=> in negative_normal_form().

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* src/ltlvisit/simplify.hh, src/ltlvisit/simplify.cc
(ltl_simplify::negative_normal_form): Remove the third
parameter and always rewrite XOR, =>, and <=>.  This avoid
problems with the cache, that could have been populated with
a different value for this third parameter.
* src/ltltest/reduc.cc, src/tgbaalgos/ltl2tgba_fm.cc: Adjust
calls to negative_normal_form().
* src/ltltest/nenoform.test: Adjust tests.
This commit is contained in:
Alexandre Duret-Lutz 2011-09-18 22:19:37 +02:00
parent b89f86edcf
commit 03fd46a13b
5 changed files with 18 additions and 36 deletions
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src/tgbaalgos/ltl2tgba_fm.cc
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@ -1604,7 +1604,7 @@ namespace spot
// logic abbreviations such as <=>, =>, or XOR, since they
// would involve negations at the BDD level.
ltl_simplifier s;
f2 = s.negative_normal_form(f, false, true);
f2 = s.negative_normal_form(f, false);
}
typedef std::set<const formula*, formula_ptr_less_than> set_type;