projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 59e0d9fe A |
1 | /* |
| 2 | * compare.c --- compare whether or not two UUID's are the same | |
| 3 | * | |
| 4 | * Returns 0 if the two UUID's are different, and 1 if they are the same. | |
| 5 | * | |
| 6 | * Copyright (C) 1996, 1997 Theodore Ts'o. | |
| 7 | * | |
| 8 | * %Begin-Header% | |
| 9 | * Redistribution and use in source and binary forms, with or without | |
| 10 | * modification, are permitted provided that the following conditions | |
| 11 | * are met: | |
| 12 | * 1. Redistributions of source code must retain the above copyright | |
| 13 | * notice, and the entire permission notice in its entirety, | |
| 14 | * including the disclaimer of warranties. | |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 16 | * notice, this list of conditions and the following disclaimer in the | |
| 17 | * documentation and/or other materials provided with the distribution. | |
| 18 | * 3. The name of the author may not be used to endorse or promote | |
| 19 | * products derived from this software without specific prior | |
| 20 | * written permission. | |
| 21 | * | |
| 22 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
| 23 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
| 24 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF | |
| 25 | * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE | |
| 26 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 27 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT | |
| 28 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
| 29 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 30 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 31 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | |
| 32 | * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH | |
| 33 | * DAMAGE. | |
| 34 | * %End-Header% | |
| 35 | */ | |
| 36 | ||
| 37 | #include "uuidP.h" | |
| 38 | #include <string.h> | |
| 39 | ||
| 40 | #define UUCMP(u1,u2) if (u1 != u2) return((u1 < u2) ? -1 : 1); | |
| 41 | ||
| 42 | int uuid_compare(const uuid_t uu1, const uuid_t uu2) | |
| 43 | { | |
| 44 | struct uuid uuid1, uuid2; | |
| 45 | ||
| 46 | uuid_unpack(uu1, &uuid1); | |
| 47 | uuid_unpack(uu2, &uuid2); | |
| 48 | ||
| 49 | UUCMP(uuid1.time_low, uuid2.time_low); | |
| 50 | UUCMP(uuid1.time_mid, uuid2.time_mid); | |
| 51 | UUCMP(uuid1.time_hi_and_version, uuid2.time_hi_and_version); | |
| 52 | UUCMP(uuid1.clock_seq, uuid2.clock_seq); | |
| 53 | return memcmp(uuid1.node, uuid2.node, 6); | |
| 54 | } | |
| 55 |