cpml/cpml-macros.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  * SECTION:macros
  22  * @title: Macros
  23  * @short_description: General purpose macros
  24  *
  25  * Collection of macros used by the CPML library.
  26  **/
  27
  28 #ifndef __CPML_MACROS_H__
  29 #define __CPML_MACROS_H__
  30
  31 /**
  32  * CPML_GNUC_CONST:
  33  *
  34  * To be appended at the end of a function to notice the compiler (gcc)
  35  * that the return value is constant.
  36  *
  37  * The coded is an adaptation of the #G_GNUC_CONST macro found
  38  * in gmacros.h of glib-2.18.3.
  39  **/
  40 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4)
  41 #define CPML_GNUC_CONST    __attribute__((__const__))
  42 #else
  43 #define CPML_GNUC_CONST
  44 #endif
  45
  46 #endif /* __CPML_MACROS_H__ */