www.pudn.com > tcpipsim.rar > cdefs.h

/* 
 * Copyright (c) 1991, 1993 
 *	The Regents of the University of California.  All rights reserved. 
 * 
 * This code is derived from software contributed to Berkeley by 
 * Berkeley Software Design, Inc. 
 * 
 * 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 University of 
 *	California, Berkeley and its contributors. 
 * 4. Neither the name of the University nor the names of its contributors 
 *    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. 
 * 
 *	@(#)cdefs.h	8.7 (Berkeley) 1/21/94 
 */ 
 
#ifndef	_CDEFS_H_ 
#define	_CDEFS_H_ 
 
#if defined(__cplusplus) 
#define	__BEGIN_DECLS	extern "C" { 
#define	__END_DECLS	}; 
#else 
#define	__BEGIN_DECLS 
#define	__END_DECLS 
#endif 
 
/* 
 * The __CONCAT macro is used to concatenate parts of symbol names, e.g. 
 * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo. 
 * The __CONCAT macro is a bit tricky -- make sure you don't put spaces 
 * in between its arguments.  __CONCAT can also concatenate double-quoted 
 * strings produced by the __STRING macro, but this only works with ANSI C. 
 */ 
#if defined(__STDC__) || defined(__cplusplus) 
#define	__P(protos)	protos		/* full-blown ANSI C */ 
#define	__CONCAT(x,y)	x ## y 
#define	__STRING(x)	#x 
 
#define	__const		const		/* define reserved names to standard */ 
#define	__signed	signed 
#define	__volatile	volatile 
#if defined(__cplusplus) 
#define	__inline	inline		/* convert to C++ keyword */ 
#else 
#ifndef __GNUC__ 
#define	__inline			/* delete GCC keyword */ 
#endif /* !__GNUC__ */ 
#endif /* !__cplusplus */ 
 
#else	/* !(__STDC__ || __cplusplus) */ 
#define	__P(protos)	()		/* traditional C preprocessor */ 
#define	__CONCAT(x,y)	x/**/y 
#define	__STRING(x)	"x" 
 
#ifndef __GNUC__ 
#define	__const				/* delete pseudo-ANSI C keywords */ 
#define	__inline 
#define	__signed 
#define	__volatile 
/* 
 * In non-ANSI C environments, new programs will want ANSI-only C keywords 
 * deleted from the program and old programs will want them left alone. 
 * When using a compiler other than gcc, programs using the ANSI C keywords 
 * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS. 
 * When using "gcc -traditional", we assume that this is the intent; if 
 * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone. 
 */ 
#ifndef	NO_ANSI_KEYWORDS 
#define	const				/* delete ANSI C keywords */ 
//#define	inline 
#define	signed 
#define	volatile 
#endif 
#endif	/* !__GNUC__ */ 
#endif	/* !(__STDC__ || __cplusplus) */ 
 
/* 
 * GCC1 and some versions of GCC2 declare dead (non-returning) and 
 * pure (no side effects) functions using "volatile" and "const"; 
 * unfortunately, these then cause warnings under "-ansi -pedantic". 
 * GCC2 uses a new, peculiar __attribute__((attrs)) style.  All of 
 * these work for GNU C++ (modulo a slight glitch in the C++ grammar 
 * in the distribution version of 2.5.5). 
 */ 
#if !defined(__GNUC__) || __GNUC__ < 2 || __GNUC_MINOR__ < 5 
#define	__attribute__(x)	/* delete __attribute__ if non-gcc or gcc1 */ 
#if defined(__GNUC__) && !defined(__STRICT_ANSI__) 
#define	__dead		__volatile 
#define	__pure		__const 
#endif 
#endif 
 
/* Delete pseudo-keywords wherever they are not available or needed. */ 
#ifndef __dead 
#define	__dead 
#define	__pure 
#endif 
 
#endif /* !_CDEFS_H_ */