<p>In sys/crypto/sha256.c:</p>
<pre style='color:#555'>> + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
> + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
> + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
> + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
> + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
> + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
> + * SUCH DAMAGE.
> + *
> + * $FreeBSD: src/lib/libmd/sha256c.c,v 1.2 2006/01/17 15:35:56 phk Exp $
> + */
> +
> +#include <string.h>
> +
> +#include "sha256.h"
> +
> +#if 0 //BYTE_ORDER == BIG_ENDIAN
</pre>
<p>The compiler knows: <a href="http://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html">http://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html</a></p>

<pre><code>/* Test for a little-endian machine */
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
</code></pre>

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