memcmp(9) [netbsd man page]

MEMCMP(9)						   BSD Kernel Developer's Manual						 MEMCMP(9)

NAME

     memcmp -- compare byte string

SYNOPSIS

     #include <sys/systm.h>

     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 '', for example).  Zero-length strings are always identical.

STANDARDS

     The memcmp() function conforms to ANSI X3.159-1989 (``ANSI C89'').

BSD
								   July 7, 2001 							       BSD

BSTRING(3)						   BSD Library Functions Manual 						BSTRING(3)

NAME

     memccpy, memchr, memcmp, memcpy, memmem, memmove, memset -- byte string operations

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <string.h>

     void *
     memchr(const void *b, int c, size_t len);

     int
     memcmp(const void *b1, const void *b2, size_t len);

     void *
     memccpy(void *dst, const void *src, int c, size_t len);

     void *
     memcpy(void *dst, const void *src, size_t len);

     void *
     memmem(const void *block, size_t blen, const void *pat, size_t plen);

     void *
     memmove(void *dst, const void *src, size_t len);

     void *
     memset(void *b, int c, size_t len);

DESCRIPTION

     These functions operate on variable length strings of bytes.  They do not check for terminating nul bytes as the routines listed in string(3)
     do.

     See the specific manual pages for more information.

SEE ALSO

     memccpy(3), memchr(3), memcmp(3), memcpy(3), memmem(3), memmove(3), memset(3)

STANDARDS

     The functions memchr(), memcmp(), memcpy(), memmove(), and memset() conform to ANSI X3.159-1989 (``ANSI C89'').

HISTORY

     The function memccpy() appeared in 4.3BSD.

BSD
								 February 9, 2007							       BSD