bcmp — returns 0 if and only if the buffers have identical contents.
int bcmp ( | const void * a, |
| const void * b, | |
size_t len); |
The sign or magnitude of a non-zero return value has no particular
meaning, and architectures may implement their own more efficient bcmp. So
while this particular implementation is a simple (tail) call to memcmp, do
not rely on anything but whether the return value is zero or non-zero.