diff --git a/tensor.c b/tensor.c
index ccb4f74..0d33aa4 100644
--- a/tensor.c
+++ b/tensor.c
@@ -15,10 +15,24 @@ void tensor_destroy(tensor t)
 	}
 }
 
-int tensor_is_empty(const tensor t){
+int tensor_is_empty(const tensor t)
+{
 	return t->elements == NULL || t->size == NULL;
 }
 
+int tensor_is_equal(const tensor t1, const tensor t2)
+{
+	int i;
+	if (t1->dimension != t2->dimension) return 0;
+	for (i = 0; i < t1->dimension; i++) {
+		if (t1->size[i] != t2->size[i]) return 0;
+	}
+	for (i = 0; i < t1->num_elem; i++) {
+		if (t1->elements[i] != t2->elements[i]) return 0;
+	}
+	return 1;
+}
+
 int _tensor_check_size(const int *size, int dim)
 {
 	int i;
@@ -165,6 +179,16 @@ void tensor_for_each_elem(tensor t, dtype (*func)(dtype))
 	}
 }
 
+int tensor_cpy(tensor t1, const tensor t2)
+{
+	int i;
+	if(!_tensor_set_size(t1, t2->size, t2->dimension)) return 0;
+	for(i = 0; i < t2->num_elem; i++) {
+		t1->elements[i] = t2->elements[i];
+	}
+	return 1;
+}
+
 void tensor_print(const tensor t)
 {
 	int i, j;
diff --git a/tensor.h b/tensor.h
index daf82e3..ca4fc48 100644
--- a/tensor.h
+++ b/tensor.h
@@ -22,6 +22,7 @@ tensor tensor_new(void);
 void tensor_destroy(tensor t);
 
 int tensor_is_empty(const tensor t);
+int tensor_is_equal(const tensor t1, const tensor t2);
 
 int _tensor_check_size(const int *size, int dim);
 int _tensor_set_size(tensor t, const int *size, int dim);
@@ -36,6 +37,7 @@ int tensor_init_rand(tensor t, int dimension, const int *size, int max);
 int tensor_add(tensor t1, const tensor t2);
 
 void tensor_for_each_elem(tensor t, dtype (*func)(dtype));
+int tensor_cpy(tensor t1, const tensor t2);
 void tensor_print(const tensor t);
 
 #endif