changes to throw exception if st!=ds

Theano · Dec 16, 2014 · 70ef7bf · 70ef7bf
1 parent 6991637
commit 70ef7bf
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/theano/tensor/signal/downsample.py b/theano/tensor/signal/downsample.py
@@ -231,6 +231,8 @@ def grad(self, inp, grads):
         x, = inp
         gz, = grads
         maxout = self(x)
+        if self.st != self.ds:
+            return theano.gradient.grad_not_implemented
         return [DownsampleFactorMaxGrad(self.ds,
                                         ignore_border=self.ignore_border,
                                         st=self.st)(
@@ -380,12 +382,14 @@ def infer_shape(self, node, in_shapes):
     def grad(self, inp, grads):
         x, maxout, gz = inp
         ggx, = grads
+        if self.st != self.ds:
+            return theano.gradient.grad_not_implemented
         return [theano.tensor.zeros_like(x),
                 theano.tensor.zeros_like(maxout),
                 DownsampleFactorMaxGradGrad(
                     self.ds, ignore_border=self.ignore_border, st=self.st)(x, maxout, ggx)]
 
-    def c_code_tmp(self, node, name, inp, out, sub):
+    def c_code(self, node, name, inp, out, sub):
         x, z, gz = inp
         gx, = out
         fail = sub['fail']