test_torch.py 文件源码

def test_gesv(self):
        a = torch.Tensor(((6.80, -2.11, 5.66, 5.97, 8.23),
                          (-6.05, -3.30, 5.36, -4.44, 1.08),
                          (-0.45, 2.58, -2.70, 0.27, 9.04),
                          (8.32, 2.71, 4.35, -7.17, 2.14),
                          (-9.67, -5.14, -7.26, 6.08, -6.87))).t()
        b = torch.Tensor(((4.02, 6.19, -8.22, -7.57, -3.03),
                          (-1.56, 4.00, -8.67, 1.75, 2.86),
                          (9.81, -4.09, -4.57, -8.61, 8.99))).t()

        res1 = torch.gesv(b, a)[0]
        self.assertLessEqual(b.dist(torch.mm(a, res1)), 1e-12)
        ta = torch.Tensor()
        tb = torch.Tensor()
        res2 = torch.gesv(b, a, out=(tb, ta))[0]
        res3 = torch.gesv(b, a, out=(b, a))[0]
        self.assertEqual(res1, tb)
        self.assertEqual(res1, b)
        self.assertEqual(res1, res2)
        self.assertEqual(res1, res3)

        # test reuse
        res1 = torch.gesv(b, a)[0]
        ta = torch.Tensor()
        tb = torch.Tensor()
        torch.gesv(b, a, out=(tb, ta))[0]
        self.assertEqual(res1, tb)
        torch.gesv(b, a, out=(tb, ta))[0]
        self.assertEqual(res1, tb)