void
*
bsearch(
const void *key
, const void *base
, size_t nmemb
, size_t size
, int (*compar) (const void *, const void *)
)
)
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 specified 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.
)
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.
)
function conforms to
ANSI X3.159-1989 (``ANSI C89'') .