diff --git a/nn/tensor.h b/nn/tensor.h
deleted file mode 100644
index d5c2c90..0000000
--- a/nn/tensor.h
+++ /dev/null
@@ -1,167 +0,0 @@
-#ifndef __NN_TENSOR
-#define __NN_TENSOR
-
-#include <stddef.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <assert.h>
-#include <string.h>
-
-#include "float16.h"
-
-#define MAX_DIMS            4
-
-// #define F32(ptr)              (*((float *)(ptr)))
-// #define F64(ptr)              (*((double *)(ptr)))
-// #define I8(ptr)               (*((int8_t *)(ptr)))
-// #define I16(ptr)              (*((int16_t *)(ptr)))
-
-
-typedef enum {
-  DTYPE_U8,
-  DTYPE_I8,
-  DTYPE_U16,
-  DTYPE_I16,
-  DTYPE_U32,
-  DTYPE_I32,
-  // DTYPE_I64,
-  // DTYPE_I128,
-  // DTYPE_F8,
-  DTYPE_F16,
-  DTYPE_F32,
-  // DTYPE_F64,
-} DataType;
-
-typedef struct {
-  DataType dtype;             /** datatype */
-  size_t ndim;                /** number of dimensions */
-  size_t size;                /** number of elements */
-  size_t shape[MAX_DIMS];     /** shape of tensor */
-  void *data;                 /** data */
-} Tensor;
-
-
-static inline size_t NN_sizeof(DataType dtype) {
-  switch (dtype) {
-    case DTYPE_U8:
-      return sizeof(uint8_t);
-    case DTYPE_I8:
-      return sizeof(int8_t);
-    case DTYPE_U16:
-      return sizeof(uint16_t);
-    case DTYPE_I16:
-      return sizeof(int16_t);
-    case DTYPE_U32:
-      return sizeof(uint32_t);
-    case DTYPE_I32:
-      return sizeof(int32_t);
-    // case DTYPE_I64:
-    //   return sizeof(int64_t);
-    case DTYPE_F16:
-      return sizeof(float16_t);
-    case DTYPE_F32:
-      return sizeof(float);
-    // case DTYPE_F64:
-    //   return sizeof(double);
-    default:
-      printf("[WARNING] Unsupported data type: %d\n", dtype);
-      return 0;
-  }
-}
-
-static inline const char *NN_get_datatype_name(DataType dtype) {
-  switch (dtype) {
-    case DTYPE_U8:
-      return "UINT8";
-    case DTYPE_I8:
-      return "INT8";
-    case DTYPE_U16:
-      return "UINT16";
-    case DTYPE_I16:
-      return "INT16";
-    case DTYPE_U32:
-      return "UINT32";
-    case DTYPE_I32:
-      return "INT32";
-    // case DTYPE_I64:
-    //   return "INT64";
-    case DTYPE_F16:
-      return "FLOAT16";
-    case DTYPE_F32:
-      return "FLOAT32";
-    // case DTYPE_F64:
-    //   return "FLOAT64";
-    default:
-      return "UNKNOWN";
-  }
-}
-
-/**
- * Returns if the tensor is a scalar
- * 
- * A scalar is a 0D tensor with a single element
- * 
- * @param tensor: the target tensor
- */
-static inline uint8_t NN_is_scalar(Tensor *tensor) {
-  return tensor->ndim == 0;
-}
-
-/**
- * Returns if the tensor is a vector
- * 
- * @param tensor: the target tensor
- */
-static inline uint8_t NN_is_vector(Tensor *tensor) {
-  return tensor->ndim == 1;
-}
-
-/**
- * Returns if the tensor is a matrix
- * 
- * @param tensor: the target tensor
- */
-static inline uint8_t NN_is_matrix(Tensor *tensor) {
-  return tensor->ndim == 2;
-}
-
-/**
- * Returns if the tensor is a 3D tensor
- * 
- * @param tensor: the target tensor
- */
-static inline uint8_t NN_is_3d(Tensor *tensor) {
-  return tensor->ndim == 3;
-}
-
-/**
- * Returns if the tensor is a 4D tensor
- * 
- * @param tensor: the target tensor
- */
-static inline uint8_t NN_is_4d(Tensor *tensor) {
-  return tensor->ndim == 4;
-}
-
-/**
- * Frees the memory allocated for the tensor data
- * 
- * @param tensor: the target tensor
- */
-static inline void NN_free_tensor_data(Tensor *tensor) {
-  free(tensor->data);
-}
-
-/**
- * Frees the memory allocated for the tensor
- * 
- * @param tensor: the target tensor
- */
-static inline void NN_delete_tensor(Tensor *tensor) {
-  free(tensor);
-}
-
-
-
-#endif // __NN_TENSOR
\ No newline at end of file