MEMMEM(3)
Library Functions Manual
MEMMEM(3)
NAME
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.
March 12, 2005
NetBSD 5.99