class ValueTestRational(unittest.TestCase):
"rational-specific unit tests"
R.initialize(Options(dict()))
f13 = R(1)/R(3)
f15 = R(1)/R(5)
f17 = R(1)/R(7)
def testRat1(self):
"no loss of precision"
self.assertEqual(self.f13 * R(3), R(1))
def testMulDiv(self):
"rational muldiv is the same as multiply followed by divide"
self.assertEqual(R.muldiv(self.f13, self.f15, self.f17), self.f13*self.f15/self.f17)
def setUp(self):
"initialize guarded and rational"
R.initialize(Options(dict(arithmetic='rational', display=self.p)))
G.initialize(Options(dict(arithmetic='guarded', precision=self.p, guard=self.g)))