1search.h(0P) POSIX Programmer's Manual search.h(0P)
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6 This manual page is part of the POSIX Programmer's Manual. The Linux
7 implementation of this interface may differ (consult the corresponding
8 Linux manual page for details of Linux behavior), or the interface may
9 not be implemented on Linux.
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12 search.h — search tables
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15 #include <search.h>
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18 The <search.h> header shall define the ENTRY type for structure entry
19 which shall include the following members:
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22 char *key
23 void *data
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25 and shall define ACTION and VISIT as enumeration data types through
26 type definitions as follows:
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29 enum { FIND, ENTER } ACTION;
30 enum { preorder, postorder, endorder, leaf } VISIT;
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32 The <search.h> header shall define the size_t type as described in
33 <sys/types.h>.
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35 The following shall be declared as functions and may also be defined as
36 macros. Function prototypes shall be provided.
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39 int hcreate(size_t);
40 void hdestroy(void);
41 ENTRY *hsearch(ENTRY, ACTION);
42 void insque(void *, void *);
43 void *lfind(const void *, const void *, size_t *,
44 size_t, int (*)(const void *, const void *));
45 void *lsearch(const void *, void *, size_t *,
46 size_t, int (*)(const void *, const void *));
47 void remque(void *);
48 void *tdelete(const void *restrict, void **restrict,
49 int(*)(const void *, const void *));
50 void *tfind(const void *, void *const *,
51 int(*)(const void *, const void *));
52 void *tsearch(const void *, void **,
53 int(*)(const void *, const void *));
54 void twalk(const void *,
55 void (*)(const void *, VISIT, int ));
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57 The following sections are informative.
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60 None.
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63 None.
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66 None.
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69 <sys_types.h>
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71 The System Interfaces volume of POSIX.1‐2017, hcreate(), insque(),
72 lsearch(), tdelete()
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75 Portions of this text are reprinted and reproduced in electronic form
76 from IEEE Std 1003.1-2017, Standard for Information Technology -- Por‐
77 table Operating System Interface (POSIX), The Open Group Base Specifi‐
78 cations Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of
79 Electrical and Electronics Engineers, Inc and The Open Group. In the
80 event of any discrepancy between this version and the original IEEE and
81 The Open Group Standard, the original IEEE and The Open Group Standard
82 is the referee document. The original Standard can be obtained online
83 at http://www.opengroup.org/unix/online.html .
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85 Any typographical or formatting errors that appear in this page are
86 most likely to have been introduced during the conversion of the source
87 files to man page format. To report such errors, see https://www.ker‐
88 nel.org/doc/man-pages/reporting_bugs.html .
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92IEEE/The Open Group 2017 search.h(0P)