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Annotation of Net2/sys/cdefs.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1991 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. All advertising materials mentioning features or use of this software
                     14:  *    must display the following acknowledgement:
                     15:  *     This product includes software developed by the University of
                     16:  *     California, Berkeley and its contributors.
                     17:  * 4. Neither the name of the University nor the names of its contributors
                     18:  *    may be used to endorse or promote products derived from this software
                     19:  *    without specific prior written permission.
                     20:  *
                     21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     31:  * SUCH DAMAGE.
                     32:  *
                     33:  *     @(#)cdefs.h     7.6 (Berkeley) 5/4/91
                     34:  */
                     35: 
                     36: #ifndef        _CDEFS_H_
                     37: #define        _CDEFS_H_
                     38: 
                     39: #if defined(__cplusplus)
                     40: #define        __BEGIN_DECLS   extern "C" {
                     41: #define        __END_DECLS     };
                     42: #else
                     43: #define        __BEGIN_DECLS
                     44: #define        __END_DECLS
                     45: #endif
                     46: 
                     47: /*
                     48:  * The __CONCAT macro is used to concatenate parts of symbol names, e.g.
                     49:  * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
                     50:  * The __CONCAT macro is a bit tricky -- make sure you don't put spaces
                     51:  * in between its arguments.  __CONCAT can also concatenate double-quoted
                     52:  * strings produced by the __STRING macro, but this only works with ANSI C.
                     53:  */
                     54: #if defined(__STDC__) || defined(__cplusplus)
                     55: #define        __P(protos)     protos          /* full-blown ANSI C */
                     56: #define        __CONCAT(x,y)   x ## y
                     57: #define        __STRING(x)     #x
                     58: 
                     59: #else  /* !(__STDC__ || __cplusplus) */
                     60: #define        __P(protos)     ()              /* traditional C preprocessor */
                     61: #define        __CONCAT(x,y)   x/**/y
                     62: #define        __STRING(x)     "x"
                     63: 
                     64: #ifdef __GNUC__
                     65: #define        const           __const         /* GCC: ANSI C with -traditional */
                     66: #define        inline          __inline
                     67: #define        signed          __signed
                     68: #define        volatile        __volatile
                     69: 
                     70: #else  /* !__GNUC__ */
                     71: #define        const                           /* delete ANSI C keywords */
                     72: #define        inline
                     73: #define        signed
                     74: #define        volatile
                     75: #endif /* !__GNUC__ */
                     76: #endif /* !(__STDC__ || __cplusplus) */
                     77: 
                     78: #endif /* !_CDEFS_H_ */

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