1 | /* Zero byte detection, boolean. Generic C version. |
2 | Copyright (C) 2023-2024 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
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. |
9 | |
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 |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ |
18 | |
19 | #ifndef _STRING_FZB_H |
20 | #define _STRING_FZB_H 1 |
21 | |
22 | #include <endian.h> |
23 | #include <string-fza.h> |
24 | |
25 | /* Determine if any byte within X is zero. This is a pure boolean test. */ |
26 | |
27 | static __always_inline _Bool |
28 | has_zero (op_t x) |
29 | { |
30 | return find_zero_low (x) != 0; |
31 | } |
32 | |
33 | /* Likewise, but for byte equality between X1 and X2. */ |
34 | |
35 | static __always_inline _Bool |
36 | has_eq (op_t x1, op_t x2) |
37 | { |
38 | return find_eq_low (x1, x2) != 0; |
39 | } |
40 | |
41 | /* Likewise, but for zeros in X1 and equal bytes between X1 and X2. */ |
42 | |
43 | static __always_inline _Bool |
44 | has_zero_eq (op_t x1, op_t x2) |
45 | { |
46 | return find_zero_eq_low (x1, x2); |
47 | } |
48 | |
49 | #endif /* _STRING_FZB_H */ |
50 | |