change FPGA kernel pointer type

src/operators/kernel/fpga/conv_add_bn_kernel.cpp

@@ -61,7 +61,7 @@ bool ConvAddBNKernel<FPGA, float>::Init(FusionConvAddBNParam *param) {
   param->SetNewBias(new_bias);
 
   fpga::quantify_filter(filter);
-  auto filter_ptr = filter->data<float>();
+  auto filter_ptr = filter->data<int8_t>();
 
   fpga::ConvArgs convArgs;
   convArgs.relu_enabled = relu_enabled;

src/operators/kernel/fpga/conv_add_bn_relu_kernel.cpp

@@ -57,7 +57,7 @@ bool ConvAddBNReluKernel<FPGA, float>::Init(FusionConvAddBNReluParam *param) {
   param->SetNewScale(new_scale);
   param->SetNewBias(new_bias);
   fpga::quantify_filter(filter);
-  auto filter_ptr = filter->data<float>();
+  auto filter_ptr = filter->data<int8_t>();
 
   fpga::ConvArgs convArgs;
   convArgs.relu_enabled = relu_enabled;

src/operators/kernel/fpga/conv_add_relu_kernel.cpp

@@ -41,7 +41,7 @@ bool ConvAddReluKernel<FPGA, float>::Init(FusionConvAddReluParam *param) {
   }
 
   fpga::quantify_filter(filter);
-  auto filter_ptr = filter->data<float>();
+  auto filter_ptr = filter->data<int8_t>();
 
   fpga::ConvArgs convArgs;
   convArgs.relu_enabled = relu_enabled;

src/operators/kernel/fpga/conv_bn_kernel.cpp

@@ -56,7 +56,7 @@ bool ConvBNKernel<FPGA, float>::Init(FusionConvBNParam *param) {
   param->SetNewScale(new_scale);
   param->SetNewBias(new_bias);
   fpga::quantify_filter(filter);
-  auto filter_ptr = filter->data<float>();
+  auto filter_ptr = filter->data<int8_t>();
 
   fpga::ConvArgs convArgs;
   convArgs.relu_enabled = relu_enabled;

src/operators/kernel/fpga/conv_bn_relu_kernel.cpp

@@ -53,7 +53,7 @@ bool ConvBNReluKernel<FPGA, float>::Init(FusionConvBNReluParam *param) {
   param->SetNewScale(new_scale);
   param->SetNewBias(new_bias);
   fpga::quantify_filter(filter);
-  auto filter_ptr = filter->data<float>();
+  auto filter_ptr = filter->data<int8_t>();
 
   fpga::ConvArgs convArgs;
   convArgs.relu_enabled = relu_enabled;