def testrelat1(self): r=g.cos(0) self.assertEqual(r,1) self.assertNotEqual(r,1.1) r=g.cos(g.Pi) self.assertEqual(r,-1) self.assertNotEqual(r,-2) r=g.cos(2*g.Pi) self.assertEqual(r,1) self.assertNotEqual(r,1.1)
def cos(e): return Expr(_g.cos(e()), e.spatial_symbs, time=e.time)