for code review 5

Author: sweetsky0901

paddle/operators/math/maxouting.cc

@@ -89,6 +89,7 @@ class MaxOutGradFunctor<platform::CPUPlace, T> {
               if (input_data[input_idx] == output_data[output_idx]) {
                 input_grad_data[input_idx] += output_grad_data[output_idx];
                 continue_match = false;
+                break;
               }
           }
         }

paddle/operators/math/maxouting.cu

@@ -65,6 +65,7 @@ __global__ void KernelMaxoutGrad(
         if (input_data[data_idx + g * feat_len] == output_data[i]) {
           max_index = data_idx + g * feat_len;
           continue_match = false;
+          break;
         }
       }
       if (max_index != -1) {

paddle/operators/maxout_op.cu.cc

@@ -17,6 +17,11 @@
 namespace ops = paddle::operators;
 REGISTER_OP_GPU_KERNEL(maxout, ops::MaxOutKernel<paddle::platform::GPUPlace,
                        float>);
+REGISTER_OP_GPU_KERNEL(maxout, ops::MaxOutKernel<paddle::platform::GPUPlace,
+                       double>);
 REGISTER_OP_GPU_KERNEL(maxout_grad,
                        ops::MaxOutGradKernel<paddle::platform::GPUPlace,
                        float>);
+REGISTER_OP_GPU_KERNEL(maxout_grad,
+                       ops::MaxOutGradKernel<paddle::platform::GPUPlace,
+                       double>);