NAME
memcmp
- compare byte string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
int
memcmp(
const void *b1
, const void *b2
, size_t len
)
DESCRIPTION
The
memcmp(
)
function
compares byte string
b1
against byte string
b2
.
Both strings are assumed to be
len
bytes long.
RETURN VALUES
The
memcmp(
)
function
returns zero if the two strings are identical,
otherwise returns the difference between the first two differing bytes
(treated as unsigned char values, so that
`
\200
'
is greater than
`
\0
',
for example).
Zero-length strings are always identical.
SEE ALSO
bcmp(3),
strcasecmp(3),
strcmp(3),
strcoll(3),
strxfrm(3)
STANDARDS
The
memcmp(
)
function
conforms to
ANSI X3.159-1989 (``ANSI C89'') .