Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
BSEARCH(3)	       FreeBSD Library Functions Manual		    BSEARCH(3)

NAME
     bsearch --	binary search of a sorted table

LIBRARY
     Standard C	Library	(libc, -lc)

SYNOPSIS
     #include <stdlib.h>

     void *
     bsearch(const void	*key, const void *base,	size_t nmemb, size_t size,
	 int (*compar) (const void *, const void *));

DESCRIPTION
     The bsearch() function searches an	array of nmemb objects,	the initial
     member of which is	pointed	to by base, for	a member that matches the
     object pointed to by key.	The size of each member	of the array is	speci-
     fied by size.

     The contents of the array should be in ascending sorted order according
     to	the comparison function	referenced by compar.  The compar routine is
     expected to have two arguments which point	to the key object and to an
     array member, in that order, and should return an integer less than,
     equal to, or greater than zero if the key object is found,	respectively,
     to	be less	than, to match,	or be greater than the array member.  See the
     int_compare sample	function in qsort(3) for a comparison function that is
     also compatible with bsearch().

RETURN VALUES
     The bsearch() function returns a pointer to a matching member of the
     array, or a null pointer if no match is found.  If	two members compare as
     equal, which member is matched is unspecified.

SEE ALSO
     db(3), lsearch(3),	qsort(3)

STANDARDS
     The bsearch() function conforms to	ISO/IEC	9899:1990 (``ISO C90'').

FreeBSD	Ports 11.2	       February	22, 2013	    FreeBSD Ports 11.2

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | STANDARDS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=bsearch&sektion=3&manpath=FreeBSD+12.0-RELEASE+and+Ports>

home | help