memmem — locate a substring
#define _GNU_SOURCE /* See feature_test_macros(7) */ #include <string.h>
void
*memmem( |
const void *haystack, |
| size_t haystacklen, | |
| const void *needle, | |
size_t needlelen); |
The memmem() function finds
the start of the first occurrence of the substring needle of length needlelen in the memory area
haystack of length
haystacklen.
The memmem() function
returns a pointer to the beginning of the substring, or NULL
if the substring is not found.
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
memmem() |
Thread safety | MT-Safe |
This function is not specified in POSIX.1, but is present on a number of other systems.
In glibc 2.0, if needle is empty, memmem() returns a pointer to the last byte
of haystack. This is
fixed in glibc 2.1.
This page is part of release 4.07 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/.
|
Copyright 1993 David Metcalfe (davidprism.demon.co.uk) %%%LICENSE_START(VERBATIM) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. %%%LICENSE_END References consulted: Linux libc source code 386BSD man pages Modified Sat Jul 24 18:50:48 1993 by Rik Faith (faithcs.unc.edu) Interchanged 'needle' and 'haystack'; added history, aeb, 980113. |