--- libelwix/inc/elwix/acrc.h	2024/10/12 16:07:17	1.8.4.1
+++ libelwix/inc/elwix/acrc.h	2025/08/21 15:43:00	1.11
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: acrc.h,v 1.8.4.1 2024/10/12 16:07:17 misho Exp $
+* $Id: acrc.h,v 1.11 2025/08/21 15:43:00 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -58,6 +58,9 @@ struct tagCRCPoly {
 };	/* size 24bytes */
 typedef struct tagCRCPoly crcPoly_t;
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 /*
  * crcReflect() - Reflect all bits of number 
@@ -107,10 +110,10 @@ unsigned short crc16_xy(unsigned char * __restrict buf
  * crcIP() - Checksum in IP communication
  *
  * @buf = Data for calculation
- * @bufLen = Length of data
+ * @len = Length of data in bytes
  * return: Checksum
  */
-unsigned short crcIP(unsigned char * __restrict buf, int bufLen);
+unsigned short crcIP(unsigned short* __restrict buf, int len);
 /*
  * crcTCP() - Checksum for TCP v4 communication
  *
@@ -258,5 +261,8 @@ unsigned int hash_fnv1(const char *csStr, int nStrLen,
 */
 #define hash_fnv(str, len)	hash_fnv1((str), (len), 1)
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif