Ejemplo n.º 1
0
 def testAbsolute(self):
     x = random.uniform(-23, 42)
     for tol in (1e-13, 1e-12, 1e-10, 1e-5):
         # Test error < tol.
         self.assertTrue(approx_equal(x, x+tol/2, tol=tol, rel=None))
         self.assertTrue(approx_equal(x, x-tol/2, tol=tol, rel=None))
         # Test error > tol.
         self.assertFalse(approx_equal(x, x+tol*2, tol=tol, rel=None))
         self.assertFalse(approx_equal(x, x-tol*2, tol=tol, rel=None))
Ejemplo n.º 2
0
 def testUnequal(self):
     for _ in range(20):
         a = b = random.uniform(-1000, 1000)
         while b == a:
             b = random.uniform(-1000, 1000)
         assert a != b
         self.assertFalse(approx_equal(a, b))
         self.assertFalse(approx_equal(a, b, tol=None))
         self.assertFalse(approx_equal(a, b, rel=None))
         self.assertFalse(approx_equal(a, b, tol=None, rel=None))
Ejemplo n.º 3
0
 def testRelative(self):
     for x in (1e-10, 1.1, 123.456, 1.23456e18, -17.98):
         for rel in (1e-2, 1e-4, 1e-7, 1e-9):
             # Test error < rel.
             delta = x*rel/2
             self.assertTrue(approx_equal(x, x+delta, tol=None, rel=rel))
             self.assertTrue(approx_equal(x, x+delta, tol=None, rel=rel))
             # Test error > rel.
             delta = x*rel*2
             self.assertFalse(approx_equal(x, x+delta, tol=None, rel=rel))
             self.assertFalse(approx_equal(x, x+delta, tol=None, rel=rel))
Ejemplo n.º 4
0
 def testEqual(self):
     for x in (-123.456, -1.1, 0.0, 0.5, 1.9, 23.42, 1.2e68, -1, 0, 1):
         self.assertTrue(approx_equal(x, x))
         self.assertTrue(approx_equal(x, x, tol=None))
         self.assertTrue(approx_equal(x, x, rel=None))
         self.assertTrue(approx_equal(x, x, tol=None, rel=None))