def test_ite():
ordering = {'x': 0, 'y': 1}
g = BDD(ordering)
# x
ix = ordering['x']
x = g.find_or_add(ix, -1, 1)
h = ref_var(ix)
compare(x, g, h)
# y
iy = ordering['y']
y = g.find_or_add(iy, -1, 1)
h = ref_var(iy)
compare(y, g, h)
# x and y
u = g.ite(x, y, -1)
h = ref_x_and_y()
compare(u, g, h)
# x or y
u = g.ite(x, 1, y)
h = ref_x_or_y()
compare(u, g, h)
# negation
assert g.ite(x, -1, 1) == -x, g._succ
assert g.ite(-x, -1, 1) == x, g._succ
def test_ite():
ordering = {'x': 0, 'y': 1}
g = BDD(ordering)
# x
ix = ordering['x']
x = g.find_or_add(ix, -1, 1)
h = ref_var(ix)
compare(x, g, h)
# y
iy = ordering['y']
y = g.find_or_add(iy, -1, 1)
h = ref_var(iy)
compare(y, g, h)
# x and y
u = g.ite(x, y, -1)
h = ref_x_and_y()
compare(u, g, h)
# x or y
u = g.ite(x, 1, y)
h = ref_x_or_y()
compare(u, g, h)
# negation
assert g.ite(x, -1, 1) == -x, g._succ
assert g.ite(-x, -1, 1) == x, g._succ
