Index: Utilities.h
===================================================================
diff -u -r2a312d7c2448c2ad754532e71c27cbe91f671a15 -rb20ab0cdf009f97c0aff428219e901b0603e3fd2
--- Utilities.h	(.../Utilities.h)	(revision 2a312d7c2448c2ad754532e71c27cbe91f671a15)
+++ Utilities.h	(.../Utilities.h)	(revision b20ab0cdf009f97c0aff428219e901b0603e3fd2)
@@ -7,8 +7,8 @@
 *
 * @file Utilities.h
 *
-* @author (last) Sean Nash
-* @date (last) 04-Aug-2020
+* @author (last) Quang Nguyen
+* @date (last) 22-Jul-2020
 *
 * @author (original) Sean
 * @date (original) 17-Feb-2020
@@ -55,6 +55,7 @@
 typedef enum Critical_Data_Types
 {
     CRITICAL_DATA_TYPE_U32 = 0,                             ///< Critical data is unsigned 32-bit integer type
+    CRITICAL_DATA_TYPE_S32,                                 ///< Critical data is signed 32-bit integer type
     CRITICAL_DATA_TYPE_F32,                                 ///< Critical data is 32-bit floating point type
     NUM_OF_CRITICAL_DATA_TYPES                              ///< Total number of critical data types.
 } CRITICAL_DATA_TYPES_T;
@@ -63,7 +64,8 @@
 typedef union
 {
     U32    uInt;                ///< critical data of unsigned integer type.
-    F32    flt;                 ///< critical data of floating point type.
+    S32    sInt;                ///< critical data of signed integer type.
+    F32    sFlt;                ///< critical data of floating point type.
 } CRITICAL_DATAS_T;
 
 /// critical integer data structure.