0p:search.h
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search.h - search tables
#include <search.h>
Contents |
DESCRIPTION
The <search.h> header shall define the ENTRY type for structure entry which shall include the following members:
char *key
void *data
and shall define ACTION and VISIT as enumeration data types through type definitions as follows:
enum { FIND, ENTER } ACTION;
enum { preorder, postorder, endorder, leaf } VISIT;
The size_t type shall be defined as described in <sys/types.h> .
The following shall be declared as functions and may also be defined as macros. Function prototypes shall be pro-
vided.
int hcreate(size_t);
void hdestroy(void);
ENTRY *hsearch(ENTRY, ACTION);
void insque(void *, void *);
void *lfind(const void *, const void *, size_t *,
size_t, int (*)(const void *, const void *));
void *lsearch(const void *, void *, size_t *,
size_t, int (*)(const void *, const void *));
void remque(void *);
void *tdelete(const void *restrict, void **restrict,
int(*)(const void *, const void *));
void *tfind(const void *, void *const *,
int(*)(const void *, const void *));
void *tsearch(const void *, void **,
int(*)(const void *, const void *));
void twalk(const void *,
void (*)(const void *, VISIT, int ));
The following sections are informative.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
RELATED
<sys/types.h> , the System Interfaces volume of IEEE Std 1003.1-2001, hcreate(), insque(), lsearch(), remque(),
tsearch()
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Stan-
dard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifica-
tions Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open
Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard,
the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
online at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 <search.h>(P)