include/SDL_types.h
author Sam Lantinga <slouken@libsdl.org>
Wed, 08 Feb 2006 08:55:33 +0000
changeset 1346 1b5fbaf1d2c6
parent 1345 7f32b9bede06
child 1353 7ba544e2888d
permissions -rw-r--r--
Default to build SDL without MSVCRT
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2006 Sam Lantinga
     4 
     5     This library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Lesser General Public
     7     License as published by the Free Software Foundation; either
     8     version 2.1 of the License, or (at your option) any later version.
     9 
    10     This library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Lesser General Public License for more details.
    14 
    15     You should have received a copy of the GNU Lesser General Public
    16     License along with this library; if not, write to the Free Software
    17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
    18 
    19     Sam Lantinga
    20     slouken@libsdl.org
    21 */
    22 
    23 /* General data types used by the SDL library */
    24 
    25 #ifndef _SDL_types_h
    26 #define _SDL_types_h
    27 
    28 #include <sys/types.h>
    29 #ifdef _MSC_VER
    30 #ifndef _SIZE_T_DEFINED
    31 #ifdef  _WIN64
    32 typedef unsigned __int64    size_t;
    33 #else
    34 typedef _W64 unsigned int   size_t;
    35 #endif
    36 #define _SIZE_T_DEFINED
    37 #endif
    38 typedef size_t uintptr_t;
    39 #endif
    40 
    41 /* The number of elements in an array */
    42 #define SDL_arraysize(array)	(sizeof(array)/sizeof(array[0]))
    43 #define SDL_TABLESIZE(table)	SDL_arraysize(table)
    44 
    45 /* Basic data types */
    46 typedef enum SDL_bool {
    47 	SDL_FALSE = 0,
    48 	SDL_TRUE  = 1
    49 } SDL_bool;
    50 
    51 #ifdef H_MMBASIC /* mmbasic.h (Tru64 MME) */
    52 /* Some of the basic types are already defined in mmbasic.h */
    53 typedef signed char	Sint8;
    54 typedef signed short	Sint16;
    55 typedef signed int	Sint32;
    56 #else
    57 typedef unsigned char	Uint8;
    58 typedef signed char	Sint8;
    59 typedef unsigned short	Uint16;
    60 typedef signed short	Sint16;
    61 typedef unsigned int	Uint32;
    62 typedef signed int	Sint32;
    63 #endif
    64 
    65 /* Figure out how to support 64-bit datatypes */
    66 #if !defined(__STRICT_ANSI__)
    67 #ifdef __osf__ /* Tru64 */
    68 #define SDL_HAS_64BIT_TYPE	long
    69 #elif defined(__GNUC__) || defined(__MWERKS__) || defined(__SUNPRO_C) || defined(__DECC) || defined(__WATCOMC__)
    70 #define SDL_HAS_64BIT_TYPE	long long
    71 #elif defined(_MSC_VER) /* VC++ */
    72 #define SDL_HAS_64BIT_TYPE	__int64
    73 #endif
    74 #endif /* !__STRICT_ANSI__ */
    75 
    76 /* The 64-bit type isn't available on EPOC/Symbian OS */
    77 #ifdef __SYMBIAN32__
    78 #undef SDL_HAS_64BIT_TYPE
    79 #endif
    80 
    81 /* The 64-bit datatype isn't supported on all platforms */
    82 #ifdef SDL_HAS_64BIT_TYPE
    83 #ifndef H_MMBASIC
    84 typedef unsigned SDL_HAS_64BIT_TYPE Uint64;
    85 #endif
    86 typedef SDL_HAS_64BIT_TYPE Sint64;
    87 #else
    88 /* This is really just a hack to prevent the compiler from complaining */
    89 typedef struct {
    90 	Uint32 hi;
    91 	Uint32 lo;
    92 } Uint64, Sint64;
    93 #endif
    94 
    95 /* Make sure the types really have the right sizes */
    96 #define SDL_COMPILE_TIME_ASSERT(name, x)               \
    97        typedef int SDL_dummy_ ## name[(x) * 2 - 1]
    98 
    99 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
   100 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
   101 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
   102 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
   103 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
   104 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
   105 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
   106 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
   107 
   108 /* Check to make sure enums are the size of ints, for structure packing.
   109    For both Watcom C/C++ and Borland C/C++ the compiler option that makes
   110    enums having the size of an int must be enabled.
   111    This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
   112 */
   113 /* Enable enums always int in CodeWarrior (for MPW use "-enum int") */
   114 #ifdef __MWERKS__
   115 #pragma enumsalwaysint on
   116 #endif
   117 
   118 typedef enum {
   119 	DUMMY_ENUM_VALUE
   120 } SDL_DUMMY_ENUM;
   121 
   122 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
   123 
   124 #endif