memset()

STATUS ssDot1xStateGet(void)
{
	SWITCH_802_1X_STRUCT pGlobalCfg;	

	memset(&pGlobalCfg, 0, sizeof(SWITCH_802_1X_STRUCT));
	/* ... */
}

memcpy()

int sendPktMsgToAuth(TP_PACKET_T* packet)
{
	int status;
	AUTH_MSG sAuthMsg;

	sAuthMsg.type = (UCHAR)AUTH_MSG_EAPOL;
	memcpy(&(sAuthMsg.packet), packet, sizeof(TP_PACKET_T));
	
	/* ... */

bcopy()

    /* end driver first pass init */
    if (initString[0] == '\0') {
        bcopy("et", initString, 3);
        return (NULL);
    }

bzero()

    bzero((char*) et, sizeof(et_info_t));