Issue #9165: Add math.isfinite and cmath.isfinite.
diff --git a/Lib/test/test_cmath.py b/Lib/test/test_cmath.py
index e6c80d2..a589f8d 100644
--- a/Lib/test/test_cmath.py
+++ b/Lib/test/test_cmath.py
@@ -442,6 +442,15 @@
self.assertCEqual(rect(1, pi/2), (0, 1.))
self.assertCEqual(rect(1, -pi/2), (0, -1.))
+ def test_isfinite(self):
+ real_vals = [float('-inf'), -2.3, -0.0,
+ 0.0, 2.3, float('inf'), float('nan')]
+ for x in real_vals:
+ for y in real_vals:
+ z = complex(x, y)
+ self.assertEquals(cmath.isfinite(z),
+ math.isfinite(x) and math.isfinite(y))
+
def test_isnan(self):
self.assertFalse(cmath.isnan(1))
self.assertFalse(cmath.isnan(1j))
diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py
index 12e7f98..90bd363 100644
--- a/Lib/test/test_math.py
+++ b/Lib/test/test_math.py
@@ -915,6 +915,15 @@
self.assertRaises(TypeError, math.trunc, 1, 2)
self.assertRaises(TypeError, math.trunc, TestNoTrunc())
+ def testIsfinite(self):
+ self.assertTrue(math.isfinite(0.0))
+ self.assertTrue(math.isfinite(-0.0))
+ self.assertTrue(math.isfinite(1.0))
+ self.assertTrue(math.isfinite(-1.0))
+ self.assertFalse(math.isfinite(float("nan")))
+ self.assertFalse(math.isfinite(float("inf")))
+ self.assertFalse(math.isfinite(float("-inf")))
+
def testIsnan(self):
self.assertTrue(math.isnan(float("nan")))
self.assertTrue(math.isnan(float("inf")* 0.))