cpml/cpml-alloca.h

   1 /* CPML - Cairo Path Manipulation Library
   2  * Copyright (C) 2008, 2009  Nicola Fontana <ntd at entidi.it>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA  02110-1301, USA.
  18  */
  19
  20 /*
  21  * This file is based on galloca.h distribuited by the GLib project
  22  * (glib-2.18.3). It is a private header, internally used by cpml,
  23  * so it should not be installed.
  24  */
  25
  26 #ifndef __CPML_ALLOCA_H__
  27 #define __CPML_ALLOCA_H__
  28
  29 #include <config.h>
  30 #include <stddef.h>
  31
  32 #ifdef  __GNUC__
  33 /* GCC does the right thing */
  34 # undef alloca
  35 # define alloca(size)   __builtin_alloca(size)
  36 #elif defined (HAVE_ALLOCA_H)
  37 /* a native and working alloca.h is there */
  38 # include <alloca.h>
  39 #else /* !__GNUC__ && !HAVE_ALLOCA_H */
  40 # if defined(_MSC_VER) || defined(__DMC__)
  41 #  include <malloc.h>
  42 #  define alloca _alloca
  43 # else /* !_MSC_VER && !__DMC__ */
  44 #  ifdef _AIX
  45 #   pragma alloca
  46 #  else /* !_AIX */
  47 #   ifndef alloca /* predefined by HP cc +Olibcalls */
  48 G_BEGIN_DECLS
  49 char *alloca ();
  50 G_END_DECLS
  51 #   endif /* !alloca */
  52 #  endif /* !_AIX */
  53 # endif /* !_MSC_VER && !__DMC__ */
  54 #endif /* !__GNUC__ && !HAVE_ALLOCA_H */
  55
  56 #define cpml_alloca(size)       alloca(size)
  57 #define cpml_newa(type,n)       ((type *) alloca(sizeof(type) * (size_t) (n)))
  58
  59 #endif /* __CPML_ALLOCA_H__ */