Method testCosh

Lib/test/test_math.py:476–482

(self)

    @unittest.skipIf(sys.platform == 'win32' and platform.machine() in ('ARM', 'ARM64'),
                    "Windows UCRT is off by 2 ULP this test requires accuracy within 1 ULP")
    def testCosh(self):
        self.assertRaises(TypeError, math.cosh)
        self.ftest('cosh(0)', math.cosh(0), 1)
        self.ftest('cosh(2)-2*cosh(1)**2', math.cosh(2)-2*math.cosh(1)**2, -1) # Thanks to Lambert
        self.assertEqual(math.cosh(INF), INF)
        self.assertEqual(math.cosh(NINF), INF)
        self.assertTrue(math.isnan(math.cosh(NAN)))

    def testDegrees(self):
        self.assertRaises(TypeError, math.degrees)