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Fix trivial identity (0 => Exp) == 1, and add rewritings for =>.

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The new rewriting are (Exp => Exp) = 1, (Exp <=> Exp) == 1,
and (Exp ^ Exp) == 0.

* src/ltlast/binop.hh: Fix documentation.
* src/ltlast/binop.cc: Fix implementation.
* src/ltltest/equals.test: More tests.
* src/tgbatest/emptchk.test: Remove a useless test.
This commit is contained in:
Alexandre Duret-Lutz 2010-10-16 17:24:50 +02:00
parent f2732dd8cc
commit 473cf77144
4 changed files with 30 additions and 5 deletions
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1
src/tgbatest/emptchk.test
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@ -96,6 +96,5 @@ expect_ce 'Fa & Xb & GFc & Gd' 1
expect_ce 'Fa & Xa & GFc & Gc' 2
expect_ce 'Fc & X(a | Xb) & GF(a | Xb) & Gc' 1
expect_ce '!((FF a) <=> (F x))' 3
expect_no '!((FF a) <=> (F a))' 3
expect_no 'Xa && (!a U b) && !b && X!b' 4
expect_no '(a U !b) && Gb' 3