fixup int test

bnavigator · bnavigator · commit d54ee99d689b · 2020-07-26T01:45:34.000+02:00
diff --git a/control/tests/input_element_int_test.py b/control/tests/input_element_int_test.py
@@ -23,15 +23,15 @@ def test_tf_den_with_numpy_int_element(self):
 
         sys = ctl.tf(num, den)
 
-        np.testing.assert_allclose(1.0, ctl.dcgain(sys))
+        np.testing.assert_array_max_ulp(1.0, ctl.dcgain(sys))
 
     def test_tf_num_with_numpy_int_element(self):
         num = np.convolve([1], [1, 1])
         den = np.convolve([1, 2, 1], [1, 1, 1])
 
         sys = ctl.tf(num, den)
 
-        np.testing.assert_allclose(1.0, ctl.dcgain(sys))
+        np.testing.assert_array_max_ulp(1.0, ctl.dcgain(sys))
 
     # currently these pass
     def test_tf_input_with_int_element(self):
@@ -40,7 +40,7 @@ def test_tf_input_with_int_element(self):
 
         sys = ctl.tf(num, den)
 
-        np.testing.assert_allclose(1.0, ctl.dcgain(sys))
+        np.testing.assert_array_max_ulp(1.0, ctl.dcgain(sys))
 
     def test_ss_input_with_int_element(self):
         ident = np.eye(2, dtype=int)
@@ -53,4 +53,4 @@ def test_ss_input_with_int_element(self):
 
         sys = ctl.ss(a, b, c, d)
         sys2 = ctl.ss2tf(sys)
-        np.testing.assert_allclose(ctl.dcgain(sys), ctl.dcgain(sys2))
+        np.testing.assert_array_max_ulp(ctl.dcgain(sys), ctl.dcgain(sys2))
