Adding declaration for tensorConvPerfCudaHalf

llvm/projects/hpvm-tensor-rt/tensor_runtime/include/approx_api.h

@@ -31,8 +31,14 @@ extern "C"{
   void* tensorConvPerfCuda(void* input, void* filter,
 			   int vertical_pad, int horizontal_pad,
 			   int vertical_stride, int horizontal_stride,
-			   int conv_mode, int conv_groups, int row, int col, int start);
-
+			   int conv_mode, int conv_groups,
+			   int row, int col, int start);
+
+  void* tensorConvPerfCudaHalf(void* input_ptr, void* filter_ptr,
+			       int vertical_pad, int horizontal_pad,
+			       int vertical_stride, int horizontal_stride,
+			       int conv_mode, int conv_groups,
+			       int row, int col, int start);
   
   void sampleFilter(Tensor* filter, int skip_rate, int skip_offset);