.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved 
.TH "<search.h>" 0P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
.\" <search.h> 
.SH NAME
search.h \- search tables
.SH SYNOPSIS
.LP
\fB#include <search.h> \fP
.SH DESCRIPTION
.LP
The \fI<search.h>\fP header shall define the \fBENTRY\fP type for
structure \fBentry\fP which shall include the
following members:
.sp
.RS
.nf

\fBchar    *key
void    *data
\fP
.fi
.RE
.LP
and shall define \fBACTION\fP and \fBVISIT\fP as enumeration data
types through type definitions as follows:
.sp
.RS
.nf

\fBenum { FIND, ENTER } ACTION;
enum { preorder, postorder, endorder, leaf } VISIT;
\fP
.fi
.RE
.LP
The \fBsize_t\fP type shall be defined as described in \fI<sys/types.h>\fP
\&.
.LP
The following shall be declared as functions and may also be defined
as macros. Function prototypes shall be provided.
.sp
.RS
.nf

\fBint    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 ));
\fP
.fi
.RE
.LP
\fIThe following sections are informative.\fP
.SH APPLICATION USAGE
.LP
None.
.SH RATIONALE
.LP
None.
.SH FUTURE DIRECTIONS
.LP
None.
.SH SEE ALSO
.LP
\fI<sys/types.h>\fP, the System Interfaces volume of IEEE\ Std\ 1003.1-2001,
\fIhcreate\fP(), \fIinsque\fP(), \fIlsearch\fP(), \fIremque\fP(),
\fItsearch\fP()
.SH COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications 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 .