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memmem(3) [netbsd man page]

MEMMEM(3)						   BSD Library Functions Manual 						 MEMMEM(3)

memmem -- locate substring in byte string LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <string.h> void * memmem(const void *block, size_t blen, const void *pat, size_t plen); DESCRIPTION
The memmem() function locates the first occurrence of the binary string pat of size plen bytes in the byte string block of size blen bytes. RETURN VALUES
The memmem() function returns a pointer to the substring located, or NULL if no such substring exists within block. If plen is zero, block is returned, i.e. a zero length pat is deemed to match the start of the string, as with strstr(3). SEE ALSO
bm(3), memchr(3), strchr(3), strstr(3) STANDARDS
The memmem() function is not currently standardized. However, it is meant to be API compatible with functions in FreeBSD and Linux. HISTORY
memmem() first appeared in the Free Software Foundation's glibc library. BSD
March 12, 2005 BSD

Check Out this Related Man Page

MEMMEM(3)						     Linux Programmer's Manual							 MEMMEM(3)

memmem - locate a substring SYNOPSIS
#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); DESCRIPTION
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. RETURN VALUE
The memmem() function returns a pointer to the beginning of the substring, or NULL if the substring is not found. ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7). +----------+---------------+---------+ |Interface | Attribute | Value | +----------+---------------+---------+ |memmem() | Thread safety | MT-Safe | +----------+---------------+---------+ CONFORMING TO
This function is not specified in POSIX.1, but is present on a number of other systems. BUGS
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. SEE ALSO
bstring(3), strstr(3) COLOPHON
This page is part of release 4.15 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 GNU
2017-03-13 MEMMEM(3)
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