NAME¶
lfind, lsearch - linear search of an array
SYNOPSIS¶
#include <search.h>
void *lfind(const void *key, const void *base, size_t *nmemb,
size_t size, int(*compar)(const void *, const void *));
void *lsearch(const void *key, void *base, size_t *nmemb,
size_t size, int(*compar)(const void *, const void *));
DESCRIPTION¶
lfind() and lsearch() perform a linear search for key in
the array base which has *nmemb elements of size bytes
each. The comparison function referenced by compar is expected to have
two arguments which point to the key object and to an array member, in
that order, and which returns zero if the key object matches the array
member, and nonzero otherwise.
If lsearch() does not find a matching element, then the
key object is inserted at the end of the table, and *nmemb is
incremented. In particular, one should know that a matching element exists,
or that more room is available.
RETURN VALUE¶
lfind() returns a pointer to a matching member of the array, or NULL if
no match is found. lsearch() returns a pointer to a matching member of
the array, or to the newly added member if no match is found.
ATTRIBUTES¶
For an explanation of the terms used in this section, see attributes(7).
| Interface |
Attribute |
Value |
| lfind (), lsearch () |
Thread safety |
MT-Safe |
POSIX.1-2001, POSIX.1-2008, SVr4, 4.3BSD. Present in libc since libc-4.6.27.
BUGS¶
The naming is unfortunate.
COLOPHON¶
This page is part of release 5.04 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the latest
version of this page, can be found at https://www.kernel.org/doc/man-pages/.
