Commit 26bd1370 authored by Alexandre Duret-Lutz's avatar Alexandre Duret-Lutz
Browse files

* NEWS: Mention W and M.

parent 28094c87
2010-04-14 Alexandre Duret-Lutz <adl@lrde.epita.fr>
* NEWS: Mention W and M.
2010-04-14 Alexandre Duret-Lutz <adl@lrde.epita.fr>
More LTL reductions for W and M.
......
......@@ -16,6 +16,18 @@ New in spot 0.5a
- The syntactic simplification rule for F(a&GF(b)) = F(a)&GF(b) has
be disabled because the latter formula is in fact harder to translate
efficiently.
* New LTL operators: W (weak until) and its dual M (strong release)
- Weak until allows many LTL specification to be specified more
compactly.
- All LTL translation algorithms have been updated to
support these operators.
- Although they do not add any expressive power, translating
"a W b" is more efficient (read smaller output automaton) than
translating the equivalent form using the U operator.
- Basic syntactic rewriting rules will automatically rewrite "a U
(b | G(a))" and "(a U b)|G(a)" as "a W b", so you will benefit
from the new operators even if you do not use them. Similar
rewriting rules exist for R and M, although they are less used.
* New options have been added to the CGI script for
- SVG output
- SCC simplifications
......
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