Merge pull request #492 from DongBaiYue/metrix_rank

fix paddle.linalg.matrix_rank

Author: cangtianhuang

tester/api_config/torch_error_skip.txt

@@ -3005,4 +3005,7 @@ paddle.rsqrt(x=Tensor([2, 1073741825, 2],"float16"), )
 paddle.rsqrt(x=Tensor([2, 3, 715827883],"float16"), )
 paddle.rsqrt(x=Tensor([2, 715827883, 3],"float16"), )
 paddle.rsqrt(x=Tensor([477218589, 3, 3],"float16"), )
-paddle.rsqrt(x=Tensor([715827883, 3, 2],"float16"), )
+paddle.rsqrt(x=Tensor([715827883, 3, 2],"float16"), )
+paddle.linalg.matrix_rank(Tensor([3, 47721859, 5, 6],"float32"), None, False, )
+paddle.linalg.matrix_rank(x=Tensor([2, 67108865, 4, 4],"float64"), tol=None, hermitian=True, )
+paddle.linalg.matrix_rank(x=Tensor([4, 1073741824],"float32"), tol=None, hermitian=False, )