Guardian Procedure Calls Reference Manual (G06.25+)

Guardian Procedure Calls (S)

Guardian Procedure Calls Reference Manual—522629-013

14-119

SETSYSTEMCLOCK Procedure

Summary

Syntax for C Programmers

Syntax for TAL Programmers

Parameters

Automatically Adjusting the Clock Using Modes 0,1,2,3,6

Setting the Clock Using Modes 5 and 7

Stopping Clock Adjustment

Types of Timestamps

Condition Code Settings

Timing and Processes

System Clock System Message

Example

Related Programming Manual

Summary

The SETSYSTEMCLOCK procedure allows you to change the system clock if you are

a member of the super group.

Syntax for C Programmers

•

The function value returned by SETSYSTEMCLOCK, which indicates the condition

code, can be interpreted by

_status_lt(), _status_eq(), or _status_gt()

(defined in the file

tal.h).

Syntax for TAL Programmers

#include <cextdecs(SETSYSTEMCLOCK)>

_cc_status SETSYSTEMCLOCK ( long long julian-gmt

,short mode

,short tuid );

CALL SETSYSTEMCLOCK ( julian-gmt ! i

,mode ! i

,[ tuid ] ); ! i