+#ifndef BN_LLONG
+ /*
+ * If |w| is too long and we don't have BN_ULLONG then we need to fall
+ * back to using BN_div_word
+ */
+ if (w > ((BN_ULONG)1 << BN_BITS4)) {
+ BIGNUM *tmp = BN_dup(a);
+ if (tmp == NULL)
+ return (BN_ULONG)-1;
+
+ ret = BN_div_word(tmp, w);
+ BN_free(tmp);
+
+ return ret;
+ }
+#endif
+