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bluetooth.h
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Editing: compiler-tests.h
/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */ /* * Copyright (c) 1993, 1994, 1995, 1996, 1997 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the Computer Systems * Engineering Group at Lawrence Berkeley Laboratory. * 4. Neither the name of the University nor of the Laboratory may be used * to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * 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. */ #ifndef lib_pcap_compiler_tests_h #define lib_pcap_compiler_tests_h /* * This was introduced by Clang: * * http://clang.llvm.org/docs/LanguageExtensions.html#has-attribute * * in some version (which version?); it has been picked up by GCC 5.0. */ #ifndef __has_attribute /* * It's a macro, so you can check whether it's defined to check * whether it's supported. * * If it's not, define it to always return 0, so that we move on to * the fallback checks. */ #define __has_attribute(x) 0 #endif /* * Note that the C90 spec's "6.8.1 Conditional inclusion" and the * C99 spec's and C11 spec's "6.10.1 Conditional inclusion" say: * * Prior to evaluation, macro invocations in the list of preprocessing * tokens that will become the controlling constant expression are * replaced (except for those macro names modified by the defined unary * operator), just as in normal text. If the token "defined" is * generated as a result of this replacement process or use of the * "defined" unary operator does not match one of the two specified * forms prior to macro replacement, the behavior is undefined. * * so you shouldn't use defined() in a #define that's used in #if or * #elif. Some versions of Clang, for example, will warn about this. * * Instead, we check whether the pre-defined macros for particular * compilers are defined and, if not, define the "is this version XXX * or a later version of this compiler" macros as 0. */ /* * Check whether this is GCC major.minor or a later release, or some * compiler that claims to be "just like GCC" of that version or a * later release. */ #if ! defined(__GNUC__) #define PCAP_IS_AT_LEAST_GNUC_VERSION(major, minor) 0 #else #define PCAP_IS_AT_LEAST_GNUC_VERSION(major, minor) \ (__GNUC__ > (major) || \ (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) #endif /* * Check whether this is Clang major.minor or a later release. */ #if !defined(__clang__) #define PCAP_IS_AT_LEAST_CLANG_VERSION(major, minor) 0 #else #define PCAP_IS_AT_LEAST_CLANG_VERSION(major, minor) \ (__clang_major__ > (major) || \ (__clang_major__ == (major) && __clang_minor__ >= (minor))) #endif /* * Check whether this is Sun C/SunPro C/Oracle Studio major.minor * or a later release. * * The version number in __SUNPRO_C is encoded in hex BCD, with the * uppermost hex digit being the major version number, the next * one or two hex digits being the minor version number, and * the last digit being the patch version. * * It represents the *compiler* version, not the product version; * see * * https://sourceforge.net/p/predef/wiki/Compilers/ * * for a partial mapping, which we assume continues for later * 12.x product releases. */ #if ! defined(__SUNPRO_C) #define PCAP_IS_AT_LEAST_SUNC_VERSION(major,minor) 0 #else #define PCAP_SUNPRO_VERSION_TO_BCD(major, minor) \ (((minor) >= 10) ? \ (((major) << 12) | (((minor)/10) << 8) | (((minor)%10) << 4)) : \ (((major) << 8) | ((minor) << 4))) #define PCAP_IS_AT_LEAST_SUNC_VERSION(major,minor) \ (__SUNPRO_C >= PCAP_SUNPRO_VERSION_TO_BCD((major), (minor))) #endif /* * Check whether this is IBM XL C major.minor or a later release. * * The version number in __xlC__ has the major version in the * upper 8 bits and the minor version in the lower 8 bits. */ #if ! defined(__xlC__) #define PCAP_IS_AT_LEAST_XL_C_VERSION(major,minor) 0 #else #define PCAP_IS_AT_LEAST_XL_C_VERSION(major, minor) \ (__xlC__ >= (((major) << 8) | (minor))) #endif /* * Check whether this is HP aC++/HP C major.minor or a later release. * * The version number in __HP_aCC is encoded in zero-padded decimal BCD, * with the "A." stripped off, the uppermost two decimal digits being * the major version number, the next two decimal digits being the minor * version number, and the last two decimal digits being the patch version. * (Strip off the A., remove the . between the major and minor version * number, and add two digits of patch.) */ #if ! defined(__HP_aCC) #define PCAP_IS_AT_LEAST_HP_C_VERSION(major,minor) 0 #else #define PCAP_IS_AT_LEAST_HP_C_VERSION(major,minor) \ (__HP_aCC >= ((major)*10000 + (minor)*100)) #endif #endif /* lib_pcap_compiler_tests_h */
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