NAME
bcmp – compare byte string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <strings.h>
int
bcmp(const void *b1, const void *b2, size_t len);
DESCRIPTION
The bcmp() function compares byte string b1 against byte string b2, returning zero if they are identical, non-zero otherwise. Both strings are assumed to be len bytes long. Zero-length strings are always identical.
The strings may overlap.
SEE ALSO
memcmp(3), strcasecmp(3), strcmp(3), strcoll(3), strxfrm(3), timingsafe_bcmp(3)
HISTORY
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.
IEEE Std 1003.1-2008 (“POSIX.1”) removes the specification of bcmp() and it is marked as LEGACY in IEEE Std 1003.1-2004 (“POSIX.1”). For portability with other systems new programs should use memcmp(3).