101 lines
3.9 KiB
C
101 lines
3.9 KiB
C
/*
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)cdefs.h 8.1 (Berkeley) 6/2/93
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* $Id$
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*/
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#ifndef _CDEFS_H_
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#define _CDEFS_H_
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#if defined(__cplusplus)
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#define __BEGIN_DECLS extern "C" {
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#define __END_DECLS };
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#else
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#define __BEGIN_DECLS
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#define __END_DECLS
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#endif
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/*
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* The __CONCAT macro is used to concatenate parts of symbol names, e.g.
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* with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
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* The __CONCAT macro is a bit tricky -- make sure you don't put spaces
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* in between its arguments. __CONCAT can also concatenate double-quoted
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* strings produced by the __STRING macro, but this only works with ANSI C.
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*/
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#if defined(__STDC__) || defined(__cplusplus)
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#if defined(__P)
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#undef __P
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#endif /* defined(__P) */
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#define __P(protos) protos /* full-blown ANSI C */
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#define __CONCAT(x,y) x ## y
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#define __STRING(x) #x
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#else /* !(__STDC__ || __cplusplus) */
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#if defined(__P)
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#undef __P
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#endif /* defined(__P) */
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#define __P(protos) () /* traditional C preprocessor */
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#define __CONCAT(x,y) x/**/y
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#define __STRING(x) "x"
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/* delete ANSI C keywords */
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#define const
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#define inline
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#define signed
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#define volatile
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#endif /* !(__STDC__ || __cplusplus) */
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/*
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* GCC has extensions for declaring functions as const (`pure' - always returns
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* the same value given the same inputs, i.e., has no external state and
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* no side effects) and volatile (nonreturning or `dead').
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* These mainly affect optimization and warnings.
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*
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* To facilitate portability of a non-standard extension we define __pure
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* and __dead and use these for qualifying functions. Non-gcc compilers
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* which have similar extensions can then define these appropriately.
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*
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* Unfortunately, GCC complains if these are used under strict ANSI mode
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* (`gcc -ansi -pedantic'), hence we need to define them only if compiling
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* without this.
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*/
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#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
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#define __dead __volatile
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#define __pure __const
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#else
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#define __dead
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#define __pure
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#endif
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#endif /* !_CDEFS_H_ */
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