mirror of https://github.com/c-ares/c-ares.git
Brad House
12 months ago
parent
49bdc5bb98
commit
affdf92306
6 changed files with 0 additions and 128 deletions
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/*
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* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") |
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* Copyright (c) 1996,1999 by Internet Software Consortium. |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
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* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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* |
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* SPDX-License-Identifier: MIT |
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*/ |
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#ifndef HAVE_BITNCMP |
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# include "ares_setup.h" |
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# include "bitncmp.h" |
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/*
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* int |
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* bitncmp(l, r, n) |
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* compare bit masks l and r, for n bits. |
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* return: |
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* <0, >0, or 0 in the libc tradition. |
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* note: |
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* network byte order assumed. this means 192.5.5.240/28 has |
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* 0x11110000 in its fourth octet. |
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* author: |
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* Paul Vixie (ISC), June 1996 |
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*/ |
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int ares__bitncmp(const void *l, const void *r, size_t n) |
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{ |
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size_t lb; |
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size_t rb; |
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ares_ssize_t x; |
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size_t b; |
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b = n / 8; |
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x = memcmp(l, r, b); |
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if (x || (n % 8) == 0) { |
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return (int)x; |
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} |
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lb = ((const unsigned char *)l)[b]; |
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rb = ((const unsigned char *)r)[b]; |
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for (b = n % 8; b > 0; b--) { |
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if ((lb & 0x80) != (rb & 0x80)) { |
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if (lb & 0x80) { |
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return (1); |
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} |
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return (-1); |
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} |
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lb <<= 1; |
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rb <<= 1; |
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} |
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return (0); |
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} |
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#endif |
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@ -1,35 +0,0 @@ |
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/* MIT License
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* |
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* Copyright (c) 2005 Dominick Meglio |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice (including the next |
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* paragraph) shall be included in all copies or substantial portions of the |
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* Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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* |
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* SPDX-License-Identifier: MIT |
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*/ |
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#ifndef __ARES_BITNCMP_H |
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#define __ARES_BITNCMP_H |
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#ifndef HAVE_BITNCMP |
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int ares__bitncmp(const void *l, const void *r, size_t n); |
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#else |
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# define ares__bitncmp(x, y, z) bitncmp(x, y, z) |
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#endif |
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#endif /* __ARES_BITNCMP_H */ |
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