2 Simple DirectMedia Layer
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
25 * This is a general header that includes C language support.
31 #include "SDL_config.h"
33 #ifdef HAVE_SYS_TYPES_H
34 #include <sys/types.h>
39 #if defined(STDC_HEADERS)
44 # if defined(HAVE_STDLIB_H)
46 # elif defined(HAVE_MALLOC_H)
49 # if defined(HAVE_STDDEF_H)
52 # if defined(HAVE_STDARG_H)
57 # if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
65 #if defined(HAVE_INTTYPES_H)
66 # include <inttypes.h>
67 #elif defined(HAVE_STDINT_H)
74 # if defined(__WINRT__)
75 /* Defining _USE_MATH_DEFINES is required to get M_PI to be defined on
76 WinRT. See http://msdn.microsoft.com/en-us/library/4hwaceh6.aspx
79 # define _USE_MATH_DEFINES
86 #if defined(HAVE_ICONV) && defined(HAVE_ICONV_H)
91 * The number of elements in an array.
93 #define SDL_arraysize(array) (sizeof(array)/sizeof(array[0]))
94 #define SDL_TABLESIZE(table) SDL_arraysize(table)
97 * \name Cast operators
99 * Use proper C++ casts when compiled as C++ to be compatible with the option
100 * -Wold-style-cast of GCC (and -Werror=old-style-cast in GCC 4.2 and above).
104 #define SDL_reinterpret_cast(type, expression) reinterpret_cast<type>(expression)
105 #define SDL_static_cast(type, expression) static_cast<type>(expression)
106 #define SDL_const_cast(type, expression) const_cast<type>(expression)
108 #define SDL_reinterpret_cast(type, expression) ((type)(expression))
109 #define SDL_static_cast(type, expression) ((type)(expression))
110 #define SDL_const_cast(type, expression) ((type)(expression))
112 /* @} *//* Cast operators */
114 /* Define a four character code as a Uint32 */
115 #define SDL_FOURCC(A, B, C, D) \
116 ((SDL_static_cast(Uint32, SDL_static_cast(Uint8, (A))) << 0) | \
117 (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (B))) << 8) | \
118 (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (C))) << 16) | \
119 (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (D))) << 24))
122 * \name Basic data types
133 * \brief A signed 8-bit integer type.
135 typedef int8_t Sint8;
137 * \brief An unsigned 8-bit integer type.
139 typedef uint8_t Uint8;
141 * \brief A signed 16-bit integer type.
143 typedef int16_t Sint16;
145 * \brief An unsigned 16-bit integer type.
147 typedef uint16_t Uint16;
149 * \brief A signed 32-bit integer type.
151 typedef int32_t Sint32;
153 * \brief An unsigned 32-bit integer type.
155 typedef uint32_t Uint32;
158 * \brief A signed 64-bit integer type.
160 typedef int64_t Sint64;
162 * \brief An unsigned 64-bit integer type.
164 typedef uint64_t Uint64;
166 /* @} *//* Basic data types */
169 #define SDL_COMPILE_TIME_ASSERT(name, x) \
170 typedef int SDL_dummy_ ## name[(x) * 2 - 1]
172 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
173 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
174 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
175 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
176 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
177 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
178 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
179 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
180 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
181 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
184 /* Check to make sure enums are the size of ints, for structure packing.
185 For both Watcom C/C++ and Borland C/C++ the compiler option that makes
186 enums having the size of an int must be enabled.
187 This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
191 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
192 #if !defined(__ANDROID__)
193 /* TODO: include/SDL_stdinc.h:174: error: size of array 'SDL_dummy_enum' is negative */
199 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
201 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
204 #include "begin_code.h"
205 /* Set up for C function definitions, even when using C++ */
210 #if defined(HAVE_ALLOCA) && !defined(alloca)
211 # if defined(HAVE_ALLOCA_H)
213 # elif defined(__GNUC__)
214 # define alloca __builtin_alloca
215 # elif defined(_MSC_VER)
217 # define alloca _alloca
218 # elif defined(__WATCOMC__)
220 # elif defined(__BORLANDC__)
222 # elif defined(__DMC__)
224 # elif defined(__AIX__)
226 # elif defined(__MRC__)
227 void *alloca(unsigned);
233 #define SDL_stack_alloc(type, count) (type*)alloca(sizeof(type)*(count))
234 #define SDL_stack_free(data)
236 #define SDL_stack_alloc(type, count) (type*)SDL_malloc(sizeof(type)*(count))
237 #define SDL_stack_free(data) SDL_free(data)
240 extern DECLSPEC void *SDLCALL SDL_malloc(size_t size);
241 extern DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size);
242 extern DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size);
243 extern DECLSPEC void SDLCALL SDL_free(void *mem);
245 extern DECLSPEC char *SDLCALL SDL_getenv(const char *name);
246 extern DECLSPEC int SDLCALL SDL_setenv(const char *name, const char *value, int overwrite);
248 extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size, int (*compare) (const void *, const void *));
250 extern DECLSPEC int SDLCALL SDL_abs(int x);
252 /* !!! FIXME: these have side effects. You probably shouldn't use them. */
253 /* !!! FIXME: Maybe we do forceinline functions of SDL_mini, SDL_minf, etc? */
254 #define SDL_min(x, y) (((x) < (y)) ? (x) : (y))
255 #define SDL_max(x, y) (((x) > (y)) ? (x) : (y))
257 extern DECLSPEC int SDLCALL SDL_isdigit(int x);
258 extern DECLSPEC int SDLCALL SDL_isspace(int x);
259 extern DECLSPEC int SDLCALL SDL_toupper(int x);
260 extern DECLSPEC int SDLCALL SDL_tolower(int x);
262 extern DECLSPEC void *SDLCALL SDL_memset(void *dst, int c, size_t len);
264 #define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x)))
265 #define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x)))
267 /* Note that memset() is a byte assignment and this is a 32-bit assignment, so they're not directly equivalent. */
268 SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
270 #if defined(__GNUC__) && defined(i386)
272 __asm__ __volatile__ (
275 : "=&D" (u0), "=&a" (u1), "=&c" (u2)
276 : "0" (dst), "1" (val), "2" (SDL_static_cast(Uint32, dwords))
280 size_t _n = (dwords + 3) / 4;
281 Uint32 *_p = SDL_static_cast(Uint32 *, dst);
287 case 0: do { *_p++ = _val;
288 case 3: *_p++ = _val;
289 case 2: *_p++ = _val;
290 case 1: *_p++ = _val;
297 extern DECLSPEC void *SDLCALL SDL_memcpy(void *dst, const void *src, size_t len);
299 SDL_FORCE_INLINE void *SDL_memcpy4(void *dst, const void *src, size_t dwords)
301 return SDL_memcpy(dst, src, dwords * 4);
304 extern DECLSPEC void *SDLCALL SDL_memmove(void *dst, const void *src, size_t len);
305 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
307 extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
308 extern DECLSPEC size_t SDLCALL SDL_wcslcpy(wchar_t *dst, const wchar_t *src, size_t maxlen);
309 extern DECLSPEC size_t SDLCALL SDL_wcslcat(wchar_t *dst, const wchar_t *src, size_t maxlen);
311 extern DECLSPEC size_t SDLCALL SDL_strlen(const char *str);
312 extern DECLSPEC size_t SDLCALL SDL_strlcpy(char *dst, const char *src, size_t maxlen);
313 extern DECLSPEC size_t SDLCALL SDL_utf8strlcpy(char *dst, const char *src, size_t dst_bytes);
314 extern DECLSPEC size_t SDLCALL SDL_strlcat(char *dst, const char *src, size_t maxlen);
315 extern DECLSPEC char *SDLCALL SDL_strdup(const char *str);
316 extern DECLSPEC char *SDLCALL SDL_strrev(char *str);
317 extern DECLSPEC char *SDLCALL SDL_strupr(char *str);
318 extern DECLSPEC char *SDLCALL SDL_strlwr(char *str);
319 extern DECLSPEC char *SDLCALL SDL_strchr(const char *str, int c);
320 extern DECLSPEC char *SDLCALL SDL_strrchr(const char *str, int c);
321 extern DECLSPEC char *SDLCALL SDL_strstr(const char *haystack, const char *needle);
323 extern DECLSPEC char *SDLCALL SDL_itoa(int value, char *str, int radix);
324 extern DECLSPEC char *SDLCALL SDL_uitoa(unsigned int value, char *str, int radix);
325 extern DECLSPEC char *SDLCALL SDL_ltoa(long value, char *str, int radix);
326 extern DECLSPEC char *SDLCALL SDL_ultoa(unsigned long value, char *str, int radix);
327 extern DECLSPEC char *SDLCALL SDL_lltoa(Sint64 value, char *str, int radix);
328 extern DECLSPEC char *SDLCALL SDL_ulltoa(Uint64 value, char *str, int radix);
330 extern DECLSPEC int SDLCALL SDL_atoi(const char *str);
331 extern DECLSPEC double SDLCALL SDL_atof(const char *str);
332 extern DECLSPEC long SDLCALL SDL_strtol(const char *str, char **endp, int base);
333 extern DECLSPEC unsigned long SDLCALL SDL_strtoul(const char *str, char **endp, int base);
334 extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *str, char **endp, int base);
335 extern DECLSPEC Uint64 SDLCALL SDL_strtoull(const char *str, char **endp, int base);
336 extern DECLSPEC double SDLCALL SDL_strtod(const char *str, char **endp);
338 extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2);
339 extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2, size_t maxlen);
340 extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1, const char *str2);
341 extern DECLSPEC int SDLCALL SDL_strncasecmp(const char *str1, const char *str2, size_t len);
343 extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, const char *fmt, ...);
344 extern DECLSPEC int SDLCALL SDL_vsscanf(const char *text, const char *fmt, va_list ap);
345 extern DECLSPEC int SDLCALL SDL_snprintf(char *text, size_t maxlen, const char *fmt, ...);
346 extern DECLSPEC int SDLCALL SDL_vsnprintf(char *text, size_t maxlen, const char *fmt, va_list ap);
350 #define M_PI 3.14159265358979323846264338327950288 /* pi */
354 extern DECLSPEC double SDLCALL SDL_acos(double x);
355 extern DECLSPEC double SDLCALL SDL_asin(double x);
356 extern DECLSPEC double SDLCALL SDL_atan(double x);
357 extern DECLSPEC double SDLCALL SDL_atan2(double x, double y);
358 extern DECLSPEC double SDLCALL SDL_ceil(double x);
359 extern DECLSPEC double SDLCALL SDL_copysign(double x, double y);
360 extern DECLSPEC double SDLCALL SDL_cos(double x);
361 extern DECLSPEC float SDLCALL SDL_cosf(float x);
362 extern DECLSPEC double SDLCALL SDL_fabs(double x);
363 extern DECLSPEC double SDLCALL SDL_floor(double x);
364 extern DECLSPEC double SDLCALL SDL_log(double x);
365 extern DECLSPEC double SDLCALL SDL_pow(double x, double y);
366 extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n);
367 extern DECLSPEC double SDLCALL SDL_sin(double x);
368 extern DECLSPEC float SDLCALL SDL_sinf(float x);
369 extern DECLSPEC double SDLCALL SDL_sqrt(double x);
371 /* The SDL implementation of iconv() returns these error codes */
372 #define SDL_ICONV_ERROR (size_t)-1
373 #define SDL_ICONV_E2BIG (size_t)-2
374 #define SDL_ICONV_EILSEQ (size_t)-3
375 #define SDL_ICONV_EINVAL (size_t)-4
377 /* SDL_iconv_* are now always real symbols/types, not macros or inlined. */
378 typedef struct _SDL_iconv_t *SDL_iconv_t;
379 extern DECLSPEC SDL_iconv_t SDLCALL SDL_iconv_open(const char *tocode,
380 const char *fromcode);
381 extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
382 extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf,
383 size_t * inbytesleft, char **outbuf,
384 size_t * outbytesleft);
386 * This function converts a string between encodings in one pass, returning a
387 * string that must be freed with SDL_free() or NULL on error.
389 extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode,
390 const char *fromcode,
393 #define SDL_iconv_utf8_locale(S) SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1)
394 #define SDL_iconv_utf8_ucs2(S) (Uint16 *)SDL_iconv_string("UCS-2-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
395 #define SDL_iconv_utf8_ucs4(S) (Uint32 *)SDL_iconv_string("UCS-4-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
397 /* Ends C function definitions when using C++ */
401 #include "close_code.h"
403 #endif /* _SDL_stdinc_h */
405 /* vi: set ts=4 sw=4 expandtab: */