xref: /freebsd/sys/contrib/zstd/lib/dictBuilder/divsufsort.h (revision 389e4940069316fe667ffa263fa7d6390d0a960f)
1 /*
2  * divsufsort.h for libdivsufsort-lite
3  * Copyright (c) 2003-2008 Yuta Mori All Rights Reserved.
4  *
5  * Permission is hereby granted, free of charge, to any person
6  * obtaining a copy of this software and associated documentation
7  * files (the "Software"), to deal in the Software without
8  * restriction, including without limitation the rights to use,
9  * copy, modify, merge, publish, distribute, sublicense, and/or sell
10  * copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following
12  * conditions:
13  *
14  * The above copyright notice and this permission notice shall be
15  * included in all copies or substantial portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
19  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
21  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
22  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
23  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
24  * OTHER DEALINGS IN THE SOFTWARE.
25  */
26 
27 #ifndef _DIVSUFSORT_H
28 #define _DIVSUFSORT_H 1
29 
30 #ifdef __cplusplus
31 extern "C" {
32 #endif /* __cplusplus */
33 
34 
35 /*- Prototypes -*/
36 
37 /**
38  * Constructs the suffix array of a given string.
39  * @param T [0..n-1] The input string.
40  * @param SA [0..n-1] The output array of suffixes.
41  * @param n The length of the given string.
42  * @param openMP enables OpenMP optimization.
43  * @return 0 if no error occurred, -1 or -2 otherwise.
44  */
45 int
46 divsufsort(const unsigned char *T, int *SA, int n, int openMP);
47 
48 /**
49  * Constructs the burrows-wheeler transformed string of a given string.
50  * @param T [0..n-1] The input string.
51  * @param U [0..n-1] The output string. (can be T)
52  * @param A [0..n-1] The temporary array. (can be NULL)
53  * @param n The length of the given string.
54  * @param num_indexes The length of secondary indexes array. (can be NULL)
55  * @param indexes The secondary indexes array. (can be NULL)
56  * @param openMP enables OpenMP optimization.
57  * @return The primary index if no error occurred, -1 or -2 otherwise.
58  */
59 int
60 divbwt(const unsigned char *T, unsigned char *U, int *A, int n, unsigned char * num_indexes, int * indexes, int openMP);
61 
62 
63 #ifdef __cplusplus
64 } /* extern "C" */
65 #endif /* __cplusplus */
66 
67 #endif /* _DIVSUFSORT_H */
68