Compares universally unique identifiers (UUIDs).
Standard C Library (libc.a)
The uuid_is_nil subroutine checks whether the binary UUID pointed to by uuid1 is a nil UUID. The uuid_compare subroutine compares two binary UUIDs. The uuid_equal subroutine checks if two binary UUIDs are equal. If either of the parameters is a NULL pointer, the other parameter will be compared against the nil UUID.
| Item | Description |
|---|---|
| uuid1 | Pointer identifying the first UUID to be compared |
| uuid2 | Pointer identifying the second UUID to be compared |
| status | Points to the location where the status of the operation is to be stored. |
The uuid_is_nil subroutine returns a 1 if the UUID passed is a nil UUID, otherwise it returns 0. The uuid_equal subroutine returns a 1 if both UUIDs are equal, otherwise it returns 0. The uuid_compare subroutine returns a -1 if the uuid1 is lexically before uuid2, returns 0 if both the uuid1 and uuid2 are equal, otherwise the uuid_compare subroutine returns a -1.