diff --git a/src/libcoreint/interpreter.c b/src/libcoreint/interpreter.c
index d0e0e60e5..b4b962e07 100644
--- a/src/libcoreint/interpreter.c
+++ b/src/libcoreint/interpreter.c
@@ -137,3 +137,16 @@ try_get_string_by_idx(T_IDX idx, /**< literal id */
 
   return req_length;
 } /* try_get_string_by_idx */
+
+/**
+ * Get number literal value.
+ *
+ * @return value of number literal, corresponding to specified literal id
+ */
+ecma_Number_t
+get_number_by_idx(T_IDX idx) /**< literal id */
+{
+  TODO( Actual number literal retrievement );
+
+  return (float)idx;
+} /* get_number_by_idx */
diff --git a/src/libcoreint/interpreter.h b/src/libcoreint/interpreter.h
index bdc3b9b91..d778c3f5f 100644
--- a/src/libcoreint/interpreter.h
+++ b/src/libcoreint/interpreter.h
@@ -33,6 +33,7 @@ bool run_int (void);
 ecma_CompletionValue_t run_int_from_pos (struct __int_data *);
 
 ssize_t try_get_string_by_idx( T_IDX idx, ecma_Char_t *buffer_p, ssize_t buffer_size);
+ecma_Number_t get_number_by_idx(T_IDX idx);
 
 #endif	/* INTERPRETER_H */
 
diff --git a/src/libecmaobjects/ecma-globals.h b/src/libecmaobjects/ecma-globals.h
index 0ca41a10c..00e1ff20e 100644
--- a/src/libecmaobjects/ecma-globals.h
+++ b/src/libecmaobjects/ecma-globals.h
@@ -332,7 +332,7 @@ typedef uint8_t ecma_Char_t;
 /**
  * Description of an ecma-number
  */
-typedef double ecma_Number_t;
+typedef float ecma_Number_t;
 
 /**
  * Description of arrays'/strings' length