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d4697bc9 | 1 | /* Copyright (C) 1996-2014 Free Software Foundation, Inc. |
33a934a3 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996. | |
30de3b18 | 4 | |
33a934a3 | 5 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
30de3b18 | 9 | |
33a934a3 UD |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
30de3b18 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
30de3b18 RM |
18 | |
19 | #include <wchar.h> | |
20 | ||
be13f7bf | 21 | #ifndef WMEMCMP |
b468825a | 22 | # define WMEMCMP wmemcmp |
be13f7bf | 23 | #endif |
30de3b18 RM |
24 | |
25 | int | |
be13f7bf | 26 | WMEMCMP (s1, s2, n) |
30de3b18 RM |
27 | const wchar_t *s1; |
28 | const wchar_t *s2; | |
29 | size_t n; | |
30 | { | |
2e09a79a JM |
31 | wchar_t c1; |
32 | wchar_t c2; | |
30de3b18 RM |
33 | |
34 | while (n >= 4) | |
35 | { | |
1f1e1947 AS |
36 | c1 = s1[0]; |
37 | c2 = s2[0]; | |
30de3b18 | 38 | if (c1 - c2 != 0) |
be13f7bf | 39 | return c1 > c2 ? 1 : -1; |
1f1e1947 AS |
40 | c1 = s1[1]; |
41 | c2 = s2[1]; | |
30de3b18 | 42 | if (c1 - c2 != 0) |
be13f7bf | 43 | return c1 > c2 ? 1 : -1; |
1f1e1947 AS |
44 | c1 = s1[2]; |
45 | c2 = s2[2]; | |
30de3b18 | 46 | if (c1 - c2 != 0) |
be13f7bf | 47 | return c1 > c2 ? 1 : -1; |
1f1e1947 AS |
48 | c1 = s1[3]; |
49 | c2 = s2[3]; | |
30de3b18 | 50 | if (c1 - c2 != 0) |
be13f7bf | 51 | return c1 > c2 ? 1 : -1; |
30de3b18 RM |
52 | s1 += 4; |
53 | s2 += 4; | |
54 | n -= 4; | |
55 | } | |
56 | ||
57 | if (n > 0) | |
58 | { | |
1f1e1947 AS |
59 | c1 = s1[0]; |
60 | c2 = s2[0]; | |
30de3b18 | 61 | if (c1 - c2 != 0) |
be13f7bf | 62 | return c1 > c2 ? 1 : -1; |
30de3b18 RM |
63 | ++s1; |
64 | ++s2; | |
65 | --n; | |
66 | } | |
67 | if (n > 0) | |
68 | { | |
1f1e1947 AS |
69 | c1 = s1[0]; |
70 | c2 = s2[0]; | |
30de3b18 | 71 | if (c1 - c2 != 0) |
be13f7bf | 72 | return c1 > c2 ? 1 : -1; |
30de3b18 RM |
73 | ++s1; |
74 | ++s2; | |
75 | --n; | |
76 | } | |
77 | if (n > 0) | |
78 | { | |
1f1e1947 AS |
79 | c1 = s1[0]; |
80 | c2 = s2[0]; | |
30de3b18 | 81 | if (c1 - c2 != 0) |
be13f7bf | 82 | return c1 > c2 ? 1 : -1; |
30de3b18 RM |
83 | } |
84 | ||
85 | return 0; | |
86 | } |