Refactor Tensor methods to use void* for data handling and add device_ptr method

include/tensor.hpp

@@ -16,8 +16,6 @@ enum class DType
     // INT32,  // Not implemented yet
 };
 
-size_t dtype_size(DType dtype);
-
 class Tensor
 {
 public:
@@ -38,27 +36,13 @@ public:
     size_t size() const;
     size_t numel() const;
 
-    template <typename T>
-    const T* data() const {
-        return static_cast<T*>(d_ptr);
-    }
-
-    template <typename T>
-    T* data() {
-        return static_cast<T*>(d_ptr);
-    }
+    void* device_ptr();
 
     void zero();
 
-    template <typename T>
-    void fill(T value) {
-        backend->fill(*this, value);
-    }
+    void fill(int value);
 
-    template <typename T>
-    void set_data(T *data) {
-        backend->copy_to_device(*this, data, total_size);
-    }
+    void set_data(void *data);
 
 private:
     Shape       shape;

src/layers/batch_norm.cpp

@@ -30,7 +30,7 @@ BatchNorm2d::BatchNorm2d(
     this->dtype = dtype;
 
     epsilon = CUDANet::Tensor({1}, dtype, backend);
-    epsilon.set_data<float>(&eps);
+    epsilon.set_data(&eps);
 
     running_mean = CUDANet::Tensor({in_shape[2]}, dtype, backend);
     running_mean.zero();
@@ -81,7 +81,7 @@ size_t BatchNorm2d::output_size() {
 }
 
 void BatchNorm2d::set_weights(void* input) {
-    weights.set_data<float>(static_cast<float*>(input));
+    weights.set_data(input);
 }
 
 size_t BatchNorm2d::get_weights_size() {
@@ -89,7 +89,7 @@ size_t BatchNorm2d::get_weights_size() {
 }
 
 void BatchNorm2d::set_biases(void* input) {
-    biases.set_data<float>(static_cast<float*>(input));
+    biases.set_data(input);
 }
 
 size_t BatchNorm2d::get_biases_size() {
@@ -97,7 +97,7 @@ size_t BatchNorm2d::get_biases_size() {
 }
 
 void BatchNorm2d::set_running_mean(void* input) {
-    running_mean.set_data<float>(static_cast<float*>(input));
+    running_mean.set_data(input);
 }
 
 size_t BatchNorm2d::get_running_mean_size() {
@@ -105,7 +105,7 @@ size_t BatchNorm2d::get_running_mean_size() {
 }
 
 void BatchNorm2d::set_running_var(void* input) {
-    running_var.set_data<float>(static_cast<float*>(input));
+    running_var.set_data(input);
 }
 
 size_t BatchNorm2d::get_running_var_size() {

src/layers/conv2d.cpp

@@ -105,7 +105,7 @@ size_t Conv2d::output_size() {
 }
 
 void Conv2d::set_weights(void* input) {
-    weights.set_data<float>(static_cast<float*>(input));
+    weights.set_data(input);
 }
 
 size_t Conv2d::get_weights_size() {
@@ -113,7 +113,7 @@ size_t Conv2d::get_weights_size() {
 }
 
 void Conv2d::set_biases(void* input) {
-    biases.set_data<float>(static_cast<float*>(input));
+    biases.set_data(input);
 }
 
 size_t Conv2d::get_biases_size() {

src/layers/dense.cpp

@@ -58,7 +58,7 @@ size_t Dense::output_size() {
 
 // TODO: Use dtype
 void Dense::set_weights(void* input) {
-    weights.set_data<float>(static_cast<float*>(input));
+    weights.set_data(input);
 }
 
 size_t Dense::get_weights_size() {
@@ -66,7 +66,7 @@ size_t Dense::get_weights_size() {
 }
 
 void Dense::set_biases(void* input) {
-    biases.set_data<float>(static_cast<float*>(input));
+    biases.set_data(input);
 }
 
 size_t Dense::get_biases_size() {

src/tensor.cpp

@@ -92,6 +92,18 @@ size_t Tensor::size() const {
     return total_size;
 }
 
+void* Tensor::device_ptr() {
+    return d_ptr;
+}
+
 void Tensor::zero() {
     backend->zero(*this);
 }
+
+void Tensor::fill(int value) {
+    backend->fill(*this, value);
+}
+
+void Tensor::set_data(void *data) {
+    backend->copy_to_device(*this, data, total_size);
+}