bdd_has_common_assignement determines if two bdds a and b
have (at least) one common assignement.
That is it will return true iff bdd_and(a, b) != bddfalse.
* src/bddx.h: Here
* src/bddop.c: Here
* src/bddx.h, misc/bddlt.hh (bdd_stable_cmp): Define this
new function, based on some code that was implemented in Spot, but was
unnecessarily doing reference counting.
* src/bddop.c, src/bddx.h, src/cache.c, src/cache.h, src/kernel.c,
src/kernel.h, src/prime.c, src/prime.h, src/reorder.c: Use power of
two for the sizes of all hash tables, in order to reduce the amount of
divisions performed. Also allow bddhash to be smaller than bddnodes.
* src/bddop.c: Empty macro arguments are undefined ISO C90 and
ISO C++98. Use '+' when calling APPLY_SHORTCUTS.
* src/fdd.c, src/kernel.c: Avoid constructs invalid in C90.
* src/bddop.c, src/bddx.h, src/kernel.c, src/kernel.h,
examples/cmilner/cmilner.c: Remove C++ comments.
