libc-bottom-half/cloudlibc/src/include/_/cdefs.h

   1 // Copyright (c) 2015-2017 Nuxi, https://nuxi.nl/
   2 //
   3 // Redistribution and use in source and binary forms, with or without
   4 // modification, are permitted provided that the following conditions
   5 // are met:
   6 // 1. Redistributions of source code must retain the above copyright
   7 //    notice, this list of conditions and the following disclaimer.
   8 // 2. Redistributions in binary form must reproduce the above copyright
   9 //    notice, this list of conditions and the following disclaimer in the
  10 //    documentation and/or other materials provided with the distribution.
  11 //
  12 // THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  13 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  14 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  15 // ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  16 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  17 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  18 // OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  19 // HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  20 // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  21 // OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  22 // SUCH DAMAGE.
  23
  24 #ifndef ___CDEFS_H_
  25 #define ___CDEFS_H_
  26
  27 // Compiler-independent annotations.
  28
  29 #define __strong_reference(oldsym, newsym) \
  30   extern __typeof__(oldsym) newsym __attribute__((__alias__(#oldsym)))
  31
  32 // Convenience macros.
  33
  34 #define __arraycount(x) (sizeof(x) / sizeof((x)[0]))
  35
  36 #endif