gh-138573: Filter out failing math tests on Solaris (GH-146402)

(cherry picked from commit 8e1469c)

Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>

Author: skirpichev

Lib/test/test_cmath.py

@@ -406,6 +406,8 @@ def polar_with_errno_set(z):
                 _testcapi.set_errno(0)
         self.check_polar(polar_with_errno_set)
 
+    @unittest.skipIf(sys.platform.startswith("sunos"),
+                     "skipping, see gh-138573")
     def test_phase(self):
         self.assertAlmostEqual(phase(0), 0.)
         self.assertAlmostEqual(phase(1.), 0.)

Lib/test/test_math.py

@@ -324,6 +324,8 @@ def testAtanh(self):
         self.assertRaises(ValueError, math.atanh, NINF)
         self.assertTrue(math.isnan(math.atanh(NAN)))
 
+    @unittest.skipIf(sys.platform.startswith("sunos"),
+                     "skipping, see gh-138573")
     def testAtan2(self):
         self.assertRaises(TypeError, math.atan2)
         self.ftest('atan2(-1, 0)', math.atan2(-1, 0), -math.pi/2)