memcmp(3) Library Functions Manual memcmp(3) memcmp - (libc -lc) #include int memcmp(size_t n; const void s1[n], const void s2[n], size_t n); memcmp() n ( unsigned char) s1 s2. memcmp() n s1 n s2 . ( unsigned char) s1 s2. n . attributes(7). +------------+------------------------------------+--------------------+ || | | +------------+------------------------------------+--------------------+ |memcmp() | | MT-Safe | +------------+------------------------------------+--------------------+ C11, POSIX.1-2008. POSIX.1-2001 C89 SVr4 4.3BSD. memcmp() . n ( ). ( consttime_memequal() NetBSD) POSIX. . bstring(3), strcasecmp(3), strcmp(3), strcoll(3), strncasecmp(3), strncmp(3), wmemcmp(3) 3 . . : . 6.18 8 2026 memcmp(3)