MEMCMP
Section: Linux Programmer's Manual (3)
Updated: 2014-03-14
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NAME
memcmp - compare memory areas
SYNOPSIS
#include <string.h>
int memcmp(const void *s1, const void *s2, size_t n);
DESCRIPTION
The
memcmp()
function compares the first
n bytes (each interpreted as
unsigned char)
of the memory areas
s1 and
s2.
RETURN VALUE
The
memcmp()
function returns an integer less than, equal to, or
greater than zero if the first
n bytes of
s1 is found,
respectively, to be less than, to match, or be greater than the first
n bytes of
s2.
For a nonzero return value, the sign is determined by the sign of
the difference between the first pair of bytes (interpreted as
unsigned char)
that differ in
s1
and
s2.
ATTRIBUTES
Multithreading (see pthreads(7))
The
memcmp()
function is thread-safe.
CONFORMING TO
SVr4, 4.3BSD, C89, C99, POSIX.1-2001.
SEE ALSO
bcmp(3),
strcasecmp(3),
strcmp(3),
strcoll(3),
strncasecmp(3),
strncmp(3),
wmemcmp(3)
COLOPHON
This page is part of release 3.74 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
http://www.kernel.org/doc/man-pages/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ATTRIBUTES
-
- Multithreading (see pthreads(7))
-
- CONFORMING TO
-
- SEE ALSO
-
- COLOPHON
-