Guardian Procedure Calls Reference Manual (G06.25+)

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Guardian Procedure Calls (T-V)

Guardian Procedure Calls Reference Manual—522629-013

15-17

TS_UNIQUE_COMPARE_ Procedure (H-Series

RVUs Only)

Consideration

•

When timestamps are generated in different CPUs or on different systems in the

same EXPAND network you can use the TS_UNIQUE_CONVERT_TO_JULIAN_

procedure to compare timestamps and obtain a close-to-exact result.

TS_UNIQUE_CONVERT_TO_JULIAN_ allows you to extract the Julian

timestamps from the Unique Timestamp and compare them using the normal

compare operations. When using this method, the results are only as accurate as

the time synchronization between the CPUs. This method does not allow you to

determine which timestamp was created first when derived Julian timestamps are

equal.

TS_AMBIGUOUS [3] The values for TS1 and TS2 are nearly identical.

This value is returned when TS1 and TS2 are

created on the same system, but not the same

CPU. If TS1 and TS2 are created on different

systems, the difference in their creation time is

less than one minute.

TS_PROBABLY_LESS_THAN [4] The value of TS1 is probably less than the value

of TS2. This value is returned when TS1 and

TS2:

•

Are created on the same system, but not the

same CPU. The difference in their creation

time is greater than one second. TS1 was

probably created before TS2.

-or-

•

Are created on different systems. The

difference in their creation time is probably

more than one minute. TS1 was probably

created before TS2.

TS_PROBABLY_GREATER_THAN

[5]

The value of TS1 is probably greater than the

value of TS2.This value is returned when TS1

and TS2:

•