#include <stdlib.h>
void *bsearch(const void *srch, const void *blk,
size_t n, size_t size,
int (*cmp)(const void *, const void *));
bsearch scans a sorted memory block addressed by blk for a
match with a search value addressed by srch. The blk function is a pointer
to the first element of the memory block to be scanned. n
designates the number of elements in the block, and size is the
size of each element in bytes.
bsearch calls a user-provided comparison function, cmp,
and passes cmp pointers to the two objects being compared.
cmp must return the following values:
The description of qsort discusses
comparison function requirements in more detail.
bsearch returns a pointer to the element that matches the search
value. If no match can be found, NULL is returned.
qsort.
qsort
Copyright (c) 1998 SAS Institute Inc. Cary, NC, USA. All rights reserved.