Twice differentiability of pointwise functions (pytorch#1531)

Author: t-vi

test/test_autograd.py

@@ -1294,10 +1294,10 @@ class dont_convert(tuple):
     (Floor, (), ((S, S, S),)),
     (Ceil, (), ((S, S, S),)),
     (Frac, (), ((S, S, S),)),
-    (Fmod, (1.5,), ((S, S, S),)),
-    (Lerp, (0.2,), ((S, S, S), (S, S, S))),
+    (Fmod, (), ((S, S, S), 1.5)),
+    (Lerp, (), ((S, S, S), (S, S, S), 0.2)),
     (Rsqrt, (), (torch.rand(S, S, S) + 1e-2,)),
-    (Remainder, (1.5,), ((S, S, S),)),
+    (Remainder, (), ((S, S, S), 1.5)),
     (CmaxConstant, (), ((S, S, S), 0.5)),
     (CminConstant, (), ((S, S, S), 0.5)),
     (Mean, (), ((S, S, S),)),
@@ -1358,9 +1358,9 @@ class dont_convert(tuple):
     (Norm, (2, 1, False,), ((S, S, S),), 'keepdim_false_2_dim', [1]),
     (Norm, (3, 1, False), ((S, S, S),), 'keepdim_false_3_dim', [1]),
     (Addcmul, (), ((S, S), (S, S), (S, S))),
-    (Addcmul, (0.6,), ((S, S), (S, S), (S, S)), 'scale'),
+    (Addcmul, (), ((S, S), (S, S), (S, S), 0.6), 'scale'),
     (Addcdiv, (), ((S, S), (S, S), torch.rand(S, S) + 5e-2)),
-    (Addcdiv, (0.6,), ((S, S), (S, S), torch.rand(S, S) + 5e-2), 'scale'),
+    (Addcdiv, (), ((S, S), (S, S), torch.rand(S, S) + 5e-2, 0.6), 'scale'),
     (IndexAdd, (), ((S, S), 0, index_variable(2, S), (2, S))),
     # (IndexCopy,     (0,),               ((S, S), index_variable(2, S), (2, S))      ),
     (IndexFill, (), ((S, S), 0, index_variable(2, S), 2)),