projects / apple / libplatform.git / blame
| Commit | Line | Data |
|---|---|---|
| ada7c492 A |
1 | /* |
| 2 | * Copyright (c) 1989, 1993 | |
| 3 | * The Regents of the University of California. All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 4. Neither the name of the University nor the names of its contributors | |
| 14 | * may be used to endorse or promote products derived from this software | |
| 15 | * without specific prior written permission. | |
| 16 | * | |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 27 | * SUCH DAMAGE. | |
| 28 | */ | |
| 29 | ||
| 30 | #include <platform/string.h> | |
| 31 | ||
| 32 | #if !_PLATFORM_OPTIMIZED_STRNCMP | |
| 33 | ||
| 34 | int | |
| 35 | _platform_strncmp(const char *s1, const char *s2, size_t n) | |
| 36 | { | |
| 37 | ||
| 38 | if (n == 0) | |
| 39 | return (0); | |
| 40 | do { | |
| 41 | if (*s1 != *s2++) | |
| 42 | return (*(const unsigned char *)s1 - | |
| 43 | *(const unsigned char *)(s2 - 1)); | |
| 44 | if (*s1++ == '\0') | |
| 45 | break; | |
| 46 | } while (--n != 0); | |
| 47 | return (0); | |
| 48 | } | |
| 49 | ||
| 50 | #if VARIANT_STATIC | |
| 51 | int | |
| 52 | strncmp(const char *s1, const char *s2, size_t n) | |
| 53 | { | |
| 54 | return _platform_strncmp(s1, s2, n); | |
| 55 | } | |
| 56 | #endif | |
| 57 | ||
| 58 | #endif |