NAME

memmem — locate a byte substring in a byte string

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <string.h>

void *
memmem(const void *big, size_t big_len, const void *little, size_t little_len);

DESCRIPTION

The memmem() function locates the first occurrence of the byte string little in the byte string big.

RETURN VALUES

If big_len is smaller than little_len, if little_len is 0, if big_len is 0 or if little occurs nowhere in big, NULL is returned; otherwise a pointer to the first character of the first occurrence of little is returned.

SEE ALSO

memchr(3), strchr(3), strstr(3)

CONFORMING TO

memmem() is a GNU extension.

HISTORY

The memmem() function first appeared in FreeBSD 6.0.

AUTHORS

Pascal Gloor ⟨pascal.gloor@spale.com⟩

BUGS

This function was broken in Linux libc up to and including version 5.0.9 and in GNU libc prior to version 2.1.