include/SDL_types.h
author Sam Lantinga <slouken@libsdl.org>
Tue, 07 Feb 2006 18:36:54 +0000
changeset 1345 7f32b9bede06
parent 1330 450721ad5436
child 1346 1b5fbaf1d2c6
permissions -rw-r--r--
Fixes for Visual C++ 6.0
     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 /* FIXME!! */
    31 typedef unsigned int size_t;
    32 typedef size_t uintptr_t;
    33 #endif
    34 
    35 /* The number of elements in an array */
    36 #define SDL_arraysize(array)	(sizeof(array)/sizeof(array[0]))
    37 #define SDL_TABLESIZE(table)	SDL_arraysize(table)
    38 
    39 /* Basic data types */
    40 typedef enum SDL_bool {
    41 	SDL_FALSE = 0,
    42 	SDL_TRUE  = 1
    43 } SDL_bool;
    44 
    45 #ifdef H_MMBASIC /* mmbasic.h (Tru64 MME) */
    46 /* Some of the basic types are already defined in mmbasic.h */
    47 typedef signed char	Sint8;
    48 typedef signed short	Sint16;
    49 typedef signed int	Sint32;
    50 #else
    51 typedef unsigned char	Uint8;
    52 typedef signed char	Sint8;
    53 typedef unsigned short	Uint16;
    54 typedef signed short	Sint16;
    55 typedef unsigned int	Uint32;
    56 typedef signed int	Sint32;
    57 #endif
    58 
    59 /* Figure out how to support 64-bit datatypes */
    60 #if !defined(__STRICT_ANSI__)
    61 #ifdef __osf__ /* Tru64 */
    62 #define SDL_HAS_64BIT_TYPE	long
    63 #elif defined(__GNUC__) || defined(__MWERKS__) || defined(__SUNPRO_C) || defined(__DECC) || defined(__WATCOMC__)
    64 #define SDL_HAS_64BIT_TYPE	long long
    65 #elif defined(_MSC_VER) /* VC++ */
    66 #define SDL_HAS_64BIT_TYPE	__int64
    67 #endif
    68 #endif /* !__STRICT_ANSI__ */
    69 
    70 /* The 64-bit type isn't available on EPOC/Symbian OS */
    71 #ifdef __SYMBIAN32__
    72 #undef SDL_HAS_64BIT_TYPE
    73 #endif
    74 
    75 /* The 64-bit datatype isn't supported on all platforms */
    76 #ifdef SDL_HAS_64BIT_TYPE
    77 #ifndef H_MMBASIC
    78 typedef unsigned SDL_HAS_64BIT_TYPE Uint64;
    79 #endif
    80 typedef SDL_HAS_64BIT_TYPE Sint64;
    81 #else
    82 /* This is really just a hack to prevent the compiler from complaining */
    83 typedef struct {
    84 	Uint32 hi;
    85 	Uint32 lo;
    86 } Uint64, Sint64;
    87 #endif
    88 
    89 /* Make sure the types really have the right sizes */
    90 #define SDL_COMPILE_TIME_ASSERT(name, x)               \
    91        typedef int SDL_dummy_ ## name[(x) * 2 - 1]
    92 
    93 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
    94 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
    95 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
    96 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
    97 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
    98 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
    99 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
   100 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
   101 
   102 /* Check to make sure enums are the size of ints, for structure packing.
   103    For both Watcom C/C++ and Borland C/C++ the compiler option that makes
   104    enums having the size of an int must be enabled.
   105    This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
   106 */
   107 /* Enable enums always int in CodeWarrior (for MPW use "-enum int") */
   108 #ifdef __MWERKS__
   109 #pragma enumsalwaysint on
   110 #endif
   111 
   112 typedef enum {
   113 	DUMMY_ENUM_VALUE
   114 } SDL_DUMMY_ENUM;
   115 
   116 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
   117 
   118 #endif