/**
* Truncate doubled short hash back to a short hash.
*
- * @param lh doubled short hash to reduce again
+ * @param dh doubled short hash to reduce again
* @param sh where to store the short hash
* @return GNUNET_OK on success, GNUNET_SYSERR if this was not a
* doubled short hash
*np = '\0';
}
+/**
+ * Compare function for ShortHashCodes, producing a total ordering
+ * of all hashcodes.
+ *
+ * @param h1 some hash code
+ * @param h2 some hash code
+ * @return 1 if h1 > h2, -1 if h1 < h2 and 0 if h1 == h2.
+ */
+int
+GNUNET_CRYPTO_short_hash_cmp (const struct GNUNET_CRYPTO_ShortHashCode * h1,
+ const struct GNUNET_CRYPTO_ShortHashCode * h2)
+{
+ unsigned int *i1;
+ unsigned int *i2;
+ int i;
+ i1 = (unsigned int *) h1;
+ i2 = (unsigned int *) h2;
+ for (i = (sizeof (struct GNUNET_CRYPTO_ShortHashCode) / sizeof (unsigned int)) - 1; i >= 0; i--)
+ {
+ if (i1[i] > i2[i])
+ return 1;
+ if (i1[i] < i2[i])
+ return -1;
+ }
+ return 0;
+}
/* end of crypto_hash.c */