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Added Xor to z3py

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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2012-10-11 00:54:58 -07:00
parent 6ffaadd498
commit 345c7448ac
1 changed files with 15 additions and 0 deletions
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15
python/z3.py
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@ -1328,6 +1328,21 @@ def Implies(a, b, ctx=None):
b = s.cast(b)
return BoolRef(Z3_mk_implies(ctx.ref(), a.as_ast(), b.as_ast()), ctx)
def Xor(a, b, ctx=None):
"""Create a Z3 Xor expression.
>>> p, q = Bools('p q')
>>> Xor(p, q)
Xor(p, q)
>>> simplify(Xor(p, q))
Not(p) == q
"""
ctx = _get_ctx(_ctx_from_ast_arg_list([a, b], ctx))
s = BoolSort(ctx)
a = s.cast(a)
b = s.cast(b)
return BoolRef(Z3_mk_xor(ctx.ref(), a.as_ast(), b.as_ast()), ctx)
def Not(a, ctx=None):
"""Create a Z3 not expression or probe.