memmem(3) [netbsd man page]

MEMMEM(3)						   BSD 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.

BSD
								  March 12, 2005							       BSD

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

NAME

       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 https://www.kernel.org/doc/man-pages/.

GNU
								    2017-03-13								 MEMMEM(3)