DragonFly On-Line Manual Pages

MEMCMP(3)             DragonFly Library Functions Manual             MEMCMP(3)

NAME
     memcmp, bcmp -- compare byte string

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <string.h>

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

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

DESCRIPTION
     The memcmp() and bcmp() functions compare byte string b1 against byte
     string b2.  Both strings are assumed to be len bytes long.

RETURN VALUES
     The memcmp() and bcmp() functions return zero if the two strings are
     identical, otherwise return 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
     strcasecmp(3), strcmp(3), strcoll(3), strxfrm(3), wmemcmp(3)

STANDARDS
     The memcmp() function conforms to ISO/IEC 9899:1990 (``ISO C90'').

     A bcmp() function first appeared in 4.2BSD.  Its prototype existed
     previously in <string.h> before it was moved to <strings.h> for IEEE Std
     1003.1-2001 (``POSIX.1'') compliance.

DragonFly 5.5                    April 7, 2019                   DragonFly 5.5