include/SDL_types.h
author Sam Lantinga <slouken@libsdl.org>
Mon, 06 Feb 2006 08:28:51 +0000
changeset 1330 450721ad5436
parent 1312 c9b51268668f
child 1345 7f32b9bede06
permissions -rw-r--r--
It's now possible to build SDL without any C runtime at all on Windows,
using Visual C++ 2005
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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/* General data types used by the SDL library */
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#ifndef _SDL_types_h
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#define _SDL_types_h
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#include <sys/types.h>
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#ifdef _MSC_VER
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#include <crtdefs.h>	/* For size_t */
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#endif
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/* The number of elements in an array */
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#define SDL_arraysize(array)	(sizeof(array)/sizeof(array[0]))
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#define SDL_TABLESIZE(table)	SDL_arraysize(table)
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/* Basic data types */
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typedef enum SDL_bool {
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	SDL_FALSE = 0,
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	SDL_TRUE  = 1
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} SDL_bool;
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#ifdef H_MMBASIC /* mmbasic.h (Tru64 MME) */
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/* Some of the basic types are already defined in mmbasic.h */
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typedef signed char	Sint8;
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typedef signed short	Sint16;
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typedef signed int	Sint32;
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#else
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typedef unsigned char	Uint8;
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typedef signed char	Sint8;
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typedef unsigned short	Uint16;
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typedef signed short	Sint16;
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typedef unsigned int	Uint32;
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typedef signed int	Sint32;
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#endif
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/* Figure out how to support 64-bit datatypes */
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#if !defined(__STRICT_ANSI__)
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#ifdef __osf__ /* Tru64 */
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#define SDL_HAS_64BIT_TYPE	long
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#elif defined(__GNUC__) || defined(__MWERKS__) || defined(__SUNPRO_C) || defined(__DECC) || defined(__WATCOMC__)
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#define SDL_HAS_64BIT_TYPE	long long
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#elif defined(_MSC_VER) /* VC++ */
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#define SDL_HAS_64BIT_TYPE	__int64
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#endif
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#endif /* !__STRICT_ANSI__ */
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/* The 64-bit type isn't available on EPOC/Symbian OS */
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#ifdef __SYMBIAN32__
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#undef SDL_HAS_64BIT_TYPE
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#endif
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/* The 64-bit datatype isn't supported on all platforms */
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#ifdef SDL_HAS_64BIT_TYPE
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#ifndef H_MMBASIC
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typedef unsigned SDL_HAS_64BIT_TYPE Uint64;
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#endif
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typedef SDL_HAS_64BIT_TYPE Sint64;
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#else
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/* This is really just a hack to prevent the compiler from complaining */
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typedef struct {
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	Uint32 hi;
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	Uint32 lo;
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} Uint64, Sint64;
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#endif
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/* Make sure the types really have the right sizes */
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#define SDL_COMPILE_TIME_ASSERT(name, x)               \
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       typedef int SDL_dummy_ ## name[(x) * 2 - 1]
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SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
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SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
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SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
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SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
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SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
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SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
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SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
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SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
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/* Check to make sure enums are the size of ints, for structure packing.
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   For both Watcom C/C++ and Borland C/C++ the compiler option that makes
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   enums having the size of an int must be enabled.
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   This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
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*/
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/* Enable enums always int in CodeWarrior (for MPW use "-enum int") */
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#ifdef __MWERKS__
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#pragma enumsalwaysint on
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#endif
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typedef enum {
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	DUMMY_ENUM_VALUE
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} SDL_DUMMY_ENUM;
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SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
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#endif