xenial (7) search.h.7posix.gz

PROLOG

       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of this interface
       may differ (consult the corresponding Linux manual page for details of Linux behavior), or the  interface
       may not be implemented on Linux.

NAME

       search.h — search tables

SYNOPSIS

       #include <search.h>

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 <search.h> header shall define the size_t type as described in <sys/types.h>.

       The following shall be declared as functions and may also be defined as macros. Function prototypes shall
       be provided.

           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.

SEE ALSO

       <sys_types.h>

       The System Interfaces volume of POSIX.1‐2008, hcreate(), insque(), lsearch(), tdelete()

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition,
       Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open  Group  Base
       Specifications  Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc
       and The Open Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/online.html .

       Any  typographical  or formatting errors that appear in this page are most likely to have been introduced
       during  the  conversion  of  the  source  files  to  man  page  format.  To  report  such   errors,   see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .