[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/c-ares/src/bitncmp.c b/ap/app/c-ares/src/bitncmp.c
new file mode 100644
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+++ b/ap/app/c-ares/src/bitncmp.c
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+
+/*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1996,1999 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef HAVE_BITNCMP
+
+#include "ares_setup.h"
+#include "bitncmp.h"
+
+/*
+ * int
+ * bitncmp(l, r, n)
+ * compare bit masks l and r, for n bits.
+ * return:
+ * <0, >0, or 0 in the libc tradition.
+ * note:
+ * network byte order assumed. this means 192.5.5.240/28 has
+ * 0x11110000 in its fourth octet.
+ * author:
+ * Paul Vixie (ISC), June 1996
+ */
+int ares__bitncmp(const void *l, const void *r, int n)
+{
+ unsigned int lb, rb;
+ int x, b;
+
+ b = n / 8;
+ x = memcmp(l, r, b);
+ if (x || (n % 8) == 0)
+ return (x);
+
+ lb = ((const unsigned char *)l)[b];
+ rb = ((const unsigned char *)r)[b];
+ for (b = n % 8; b > 0; b--) {
+ if ((lb & 0x80) != (rb & 0x80)) {
+ if (lb & 0x80)
+ return (1);
+ return (-1);
+ }
+ lb <<= 1;
+ rb <<= 1;
+ }
+ return (0);
+}
+#endif