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  1. /*
  2. Simple DirectMedia Layer
  3. Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
  4. This software is provided 'as-is', without any express or implied
  5. warranty. In no event will the authors be held liable for any damages
  6. arising from the use of this software.
  7. Permission is granted to anyone to use this software for any purpose,
  8. including commercial applications, and to alter it and redistribute it
  9. freely, subject to the following restrictions:
  10. 1. The origin of this software must not be misrepresented; you must not
  11. claim that you wrote the original software. If you use this software
  12. in a product, an acknowledgment in the product documentation would be
  13. appreciated but is not required.
  14. 2. Altered source versions must be plainly marked as such, and must not be
  15. misrepresented as being the original software.
  16. 3. This notice may not be removed or altered from any source distribution.
  17. */
  18. /**
  19. * \file SDL_stdinc.h
  20. *
  21. * This is a general header that includes C language support.
  22. */
  23. #ifndef SDL_stdinc_h_
  24. #define SDL_stdinc_h_
  25. #include "SDL_config.h"
  26. #ifdef HAVE_SYS_TYPES_H
  27. #include <sys/types.h>
  28. #endif
  29. #ifdef HAVE_STDIO_H
  30. #include <stdio.h>
  31. #endif
  32. #if defined(STDC_HEADERS)
  33. # include <stdlib.h>
  34. # include <stddef.h>
  35. # include <stdarg.h>
  36. #else
  37. # if defined(HAVE_STDLIB_H)
  38. # include <stdlib.h>
  39. # elif defined(HAVE_MALLOC_H)
  40. # include <malloc.h>
  41. # endif
  42. # if defined(HAVE_STDDEF_H)
  43. # include <stddef.h>
  44. # endif
  45. # if defined(HAVE_STDARG_H)
  46. # include <stdarg.h>
  47. # endif
  48. #endif
  49. #ifdef HAVE_STRING_H
  50. # if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
  51. # include <memory.h>
  52. # endif
  53. # include <string.h>
  54. #endif
  55. #ifdef HAVE_STRINGS_H
  56. # include <strings.h>
  57. #endif
  58. #ifdef HAVE_WCHAR_H
  59. # include <wchar.h>
  60. #endif
  61. #if defined(HAVE_INTTYPES_H)
  62. # include <inttypes.h>
  63. #elif defined(HAVE_STDINT_H)
  64. # include <stdint.h>
  65. #endif
  66. #ifdef HAVE_CTYPE_H
  67. # include <ctype.h>
  68. #endif
  69. #ifdef HAVE_MATH_H
  70. # if defined(__WINRT__)
  71. /* Defining _USE_MATH_DEFINES is required to get M_PI to be defined on
  72. WinRT. See http://msdn.microsoft.com/en-us/library/4hwaceh6.aspx
  73. for more information.
  74. */
  75. # define _USE_MATH_DEFINES
  76. # endif
  77. # include <math.h>
  78. #endif
  79. #ifdef HAVE_FLOAT_H
  80. # include <float.h>
  81. #endif
  82. #if defined(HAVE_ALLOCA) && !defined(alloca)
  83. # if defined(HAVE_ALLOCA_H)
  84. # include <alloca.h>
  85. # elif defined(__GNUC__)
  86. # define alloca __builtin_alloca
  87. # elif defined(_MSC_VER)
  88. # include <malloc.h>
  89. # define alloca _alloca
  90. # elif defined(__WATCOMC__)
  91. # include <malloc.h>
  92. # elif defined(__BORLANDC__)
  93. # include <malloc.h>
  94. # elif defined(__DMC__)
  95. # include <stdlib.h>
  96. # elif defined(__AIX__)
  97. #pragma alloca
  98. # elif defined(__MRC__)
  99. void *alloca(unsigned);
  100. # else
  101. char *alloca();
  102. # endif
  103. #endif
  104. /**
  105. * The number of elements in an array.
  106. */
  107. #define SDL_arraysize(array) (sizeof(array)/sizeof(array[0]))
  108. #define SDL_TABLESIZE(table) SDL_arraysize(table)
  109. /**
  110. * Macro useful for building other macros with strings in them
  111. *
  112. * e.g. #define LOG_ERROR(X) OutputDebugString(SDL_STRINGIFY_ARG(__FUNCTION__) ": " X "\n")
  113. */
  114. #define SDL_STRINGIFY_ARG(arg) #arg
  115. /**
  116. * \name Cast operators
  117. *
  118. * Use proper C++ casts when compiled as C++ to be compatible with the option
  119. * -Wold-style-cast of GCC (and -Werror=old-style-cast in GCC 4.2 and above).
  120. */
  121. /* @{ */
  122. #ifdef __cplusplus
  123. #define SDL_reinterpret_cast(type, expression) reinterpret_cast<type>(expression)
  124. #define SDL_static_cast(type, expression) static_cast<type>(expression)
  125. #define SDL_const_cast(type, expression) const_cast<type>(expression)
  126. #else
  127. #define SDL_reinterpret_cast(type, expression) ((type)(expression))
  128. #define SDL_static_cast(type, expression) ((type)(expression))
  129. #define SDL_const_cast(type, expression) ((type)(expression))
  130. #endif
  131. /* @} *//* Cast operators */
  132. /* Define a four character code as a Uint32 */
  133. #define SDL_FOURCC(A, B, C, D) \
  134. ((SDL_static_cast(Uint32, SDL_static_cast(Uint8, (A))) << 0) | \
  135. (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (B))) << 8) | \
  136. (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (C))) << 16) | \
  137. (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (D))) << 24))
  138. /**
  139. * \name Basic data types
  140. */
  141. /* @{ */
  142. #ifdef __CC_ARM
  143. /* ARM's compiler throws warnings if we use an enum: like "SDL_bool x = a < b;" */
  144. #define SDL_FALSE 0
  145. #define SDL_TRUE 1
  146. typedef int SDL_bool;
  147. #else
  148. typedef enum
  149. {
  150. SDL_FALSE = 0,
  151. SDL_TRUE = 1
  152. } SDL_bool;
  153. #endif
  154. /**
  155. * \brief A signed 8-bit integer type.
  156. */
  157. #define SDL_MAX_SINT8 ((Sint8)0x7F) /* 127 */
  158. #define SDL_MIN_SINT8 ((Sint8)(~0x7F)) /* -128 */
  159. typedef int8_t Sint8;
  160. /**
  161. * \brief An unsigned 8-bit integer type.
  162. */
  163. #define SDL_MAX_UINT8 ((Uint8)0xFF) /* 255 */
  164. #define SDL_MIN_UINT8 ((Uint8)0x00) /* 0 */
  165. typedef uint8_t Uint8;
  166. /**
  167. * \brief A signed 16-bit integer type.
  168. */
  169. #define SDL_MAX_SINT16 ((Sint16)0x7FFF) /* 32767 */
  170. #define SDL_MIN_SINT16 ((Sint16)(~0x7FFF)) /* -32768 */
  171. typedef int16_t Sint16;
  172. /**
  173. * \brief An unsigned 16-bit integer type.
  174. */
  175. #define SDL_MAX_UINT16 ((Uint16)0xFFFF) /* 65535 */
  176. #define SDL_MIN_UINT16 ((Uint16)0x0000) /* 0 */
  177. typedef uint16_t Uint16;
  178. /**
  179. * \brief A signed 32-bit integer type.
  180. */
  181. #define SDL_MAX_SINT32 ((Sint32)0x7FFFFFFF) /* 2147483647 */
  182. #define SDL_MIN_SINT32 ((Sint32)(~0x7FFFFFFF)) /* -2147483648 */
  183. typedef int32_t Sint32;
  184. /**
  185. * \brief An unsigned 32-bit integer type.
  186. */
  187. #define SDL_MAX_UINT32 ((Uint32)0xFFFFFFFFu) /* 4294967295 */
  188. #define SDL_MIN_UINT32 ((Uint32)0x00000000) /* 0 */
  189. typedef uint32_t Uint32;
  190. /**
  191. * \brief A signed 64-bit integer type.
  192. */
  193. #define SDL_MAX_SINT64 ((Sint64)0x7FFFFFFFFFFFFFFFll) /* 9223372036854775807 */
  194. #define SDL_MIN_SINT64 ((Sint64)(~0x7FFFFFFFFFFFFFFFll)) /* -9223372036854775808 */
  195. typedef int64_t Sint64;
  196. /**
  197. * \brief An unsigned 64-bit integer type.
  198. */
  199. #define SDL_MAX_UINT64 ((Uint64)0xFFFFFFFFFFFFFFFFull) /* 18446744073709551615 */
  200. #define SDL_MIN_UINT64 ((Uint64)(0x0000000000000000ull)) /* 0 */
  201. typedef uint64_t Uint64;
  202. /* @} *//* Basic data types */
  203. /* Make sure we have macros for printing 64 bit values.
  204. * <stdint.h> should define these but this is not true all platforms.
  205. * (for example win32) */
  206. #ifndef SDL_PRIs64
  207. #ifdef PRIs64
  208. #define SDL_PRIs64 PRIs64
  209. #elif defined(__WIN32__)
  210. #define SDL_PRIs64 "I64d"
  211. #elif defined(__LINUX__) && defined(__LP64__)
  212. #define SDL_PRIs64 "ld"
  213. #else
  214. #define SDL_PRIs64 "lld"
  215. #endif
  216. #endif
  217. #ifndef SDL_PRIu64
  218. #ifdef PRIu64
  219. #define SDL_PRIu64 PRIu64
  220. #elif defined(__WIN32__)
  221. #define SDL_PRIu64 "I64u"
  222. #elif defined(__LINUX__) && defined(__LP64__)
  223. #define SDL_PRIu64 "lu"
  224. #else
  225. #define SDL_PRIu64 "llu"
  226. #endif
  227. #endif
  228. #ifndef SDL_PRIx64
  229. #ifdef PRIx64
  230. #define SDL_PRIx64 PRIx64
  231. #elif defined(__WIN32__)
  232. #define SDL_PRIx64 "I64x"
  233. #elif defined(__LINUX__) && defined(__LP64__)
  234. #define SDL_PRIx64 "lx"
  235. #else
  236. #define SDL_PRIx64 "llx"
  237. #endif
  238. #endif
  239. #ifndef SDL_PRIX64
  240. #ifdef PRIX64
  241. #define SDL_PRIX64 PRIX64
  242. #elif defined(__WIN32__)
  243. #define SDL_PRIX64 "I64X"
  244. #elif defined(__LINUX__) && defined(__LP64__)
  245. #define SDL_PRIX64 "lX"
  246. #else
  247. #define SDL_PRIX64 "llX"
  248. #endif
  249. #endif
  250. /* Annotations to help code analysis tools */
  251. #ifdef SDL_DISABLE_ANALYZE_MACROS
  252. #define SDL_IN_BYTECAP(x)
  253. #define SDL_INOUT_Z_CAP(x)
  254. #define SDL_OUT_Z_CAP(x)
  255. #define SDL_OUT_CAP(x)
  256. #define SDL_OUT_BYTECAP(x)
  257. #define SDL_OUT_Z_BYTECAP(x)
  258. #define SDL_PRINTF_FORMAT_STRING
  259. #define SDL_SCANF_FORMAT_STRING
  260. #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
  261. #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
  262. #else
  263. #if defined(_MSC_VER) && (_MSC_VER >= 1600) /* VS 2010 and above */
  264. #include <sal.h>
  265. #define SDL_IN_BYTECAP(x) _In_bytecount_(x)
  266. #define SDL_INOUT_Z_CAP(x) _Inout_z_cap_(x)
  267. #define SDL_OUT_Z_CAP(x) _Out_z_cap_(x)
  268. #define SDL_OUT_CAP(x) _Out_cap_(x)
  269. #define SDL_OUT_BYTECAP(x) _Out_bytecap_(x)
  270. #define SDL_OUT_Z_BYTECAP(x) _Out_z_bytecap_(x)
  271. #define SDL_PRINTF_FORMAT_STRING _Printf_format_string_
  272. #define SDL_SCANF_FORMAT_STRING _Scanf_format_string_impl_
  273. #else
  274. #define SDL_IN_BYTECAP(x)
  275. #define SDL_INOUT_Z_CAP(x)
  276. #define SDL_OUT_Z_CAP(x)
  277. #define SDL_OUT_CAP(x)
  278. #define SDL_OUT_BYTECAP(x)
  279. #define SDL_OUT_Z_BYTECAP(x)
  280. #define SDL_PRINTF_FORMAT_STRING
  281. #define SDL_SCANF_FORMAT_STRING
  282. #endif
  283. #if defined(__GNUC__)
  284. #define SDL_PRINTF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __printf__, fmtargnumber, fmtargnumber+1 )))
  285. #define SDL_SCANF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __scanf__, fmtargnumber, fmtargnumber+1 )))
  286. #else
  287. #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
  288. #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
  289. #endif
  290. #endif /* SDL_DISABLE_ANALYZE_MACROS */
  291. #define SDL_COMPILE_TIME_ASSERT(name, x) \
  292. typedef int SDL_compile_time_assert_ ## name[(x) * 2 - 1]
  293. /** \cond */
  294. #ifndef DOXYGEN_SHOULD_IGNORE_THIS
  295. SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
  296. SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
  297. SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
  298. SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
  299. SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
  300. SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
  301. SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
  302. SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
  303. #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
  304. /** \endcond */
  305. /* Check to make sure enums are the size of ints, for structure packing.
  306. For both Watcom C/C++ and Borland C/C++ the compiler option that makes
  307. enums having the size of an int must be enabled.
  308. This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
  309. */
  310. /** \cond */
  311. #ifndef DOXYGEN_SHOULD_IGNORE_THIS
  312. #if !defined(__ANDROID__)
  313. /* TODO: include/SDL_stdinc.h:174: error: size of array 'SDL_dummy_enum' is negative */
  314. typedef enum
  315. {
  316. DUMMY_ENUM_VALUE
  317. } SDL_DUMMY_ENUM;
  318. SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
  319. #endif
  320. #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
  321. /** \endcond */
  322. #include "begin_code.h"
  323. /* Set up for C function definitions, even when using C++ */
  324. #ifdef __cplusplus
  325. extern "C" {
  326. #endif
  327. #ifdef HAVE_ALLOCA
  328. #define SDL_stack_alloc(type, count) (type*)alloca(sizeof(type)*(count))
  329. #define SDL_stack_free(data)
  330. #else
  331. #define SDL_stack_alloc(type, count) (type*)SDL_malloc(sizeof(type)*(count))
  332. #define SDL_stack_free(data) SDL_free(data)
  333. #endif
  334. extern DECLSPEC void *SDLCALL SDL_malloc(size_t size);
  335. extern DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size);
  336. extern DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size);
  337. extern DECLSPEC void SDLCALL SDL_free(void *mem);
  338. typedef void *(SDLCALL *SDL_malloc_func)(size_t size);
  339. typedef void *(SDLCALL *SDL_calloc_func)(size_t nmemb, size_t size);
  340. typedef void *(SDLCALL *SDL_realloc_func)(void *mem, size_t size);
  341. typedef void (SDLCALL *SDL_free_func)(void *mem);
  342. /**
  343. * \brief Get the current set of SDL memory functions
  344. */
  345. extern DECLSPEC void SDLCALL SDL_GetMemoryFunctions(SDL_malloc_func *malloc_func,
  346. SDL_calloc_func *calloc_func,
  347. SDL_realloc_func *realloc_func,
  348. SDL_free_func *free_func);
  349. /**
  350. * \brief Replace SDL's memory allocation functions with a custom set
  351. *
  352. * \note If you are replacing SDL's memory functions, you should call
  353. * SDL_GetNumAllocations() and be very careful if it returns non-zero.
  354. * That means that your free function will be called with memory
  355. * allocated by the previous memory allocation functions.
  356. */
  357. extern DECLSPEC int SDLCALL SDL_SetMemoryFunctions(SDL_malloc_func malloc_func,
  358. SDL_calloc_func calloc_func,
  359. SDL_realloc_func realloc_func,
  360. SDL_free_func free_func);
  361. /**
  362. * \brief Get the number of outstanding (unfreed) allocations
  363. */
  364. extern DECLSPEC int SDLCALL SDL_GetNumAllocations(void);
  365. extern DECLSPEC char *SDLCALL SDL_getenv(const char *name);
  366. extern DECLSPEC int SDLCALL SDL_setenv(const char *name, const char *value, int overwrite);
  367. extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size, int (*compare) (const void *, const void *));
  368. extern DECLSPEC int SDLCALL SDL_abs(int x);
  369. /* !!! FIXME: these have side effects. You probably shouldn't use them. */
  370. /* !!! FIXME: Maybe we do forceinline functions of SDL_mini, SDL_minf, etc? */
  371. #define SDL_min(x, y) (((x) < (y)) ? (x) : (y))
  372. #define SDL_max(x, y) (((x) > (y)) ? (x) : (y))
  373. extern DECLSPEC int SDLCALL SDL_isdigit(int x);
  374. extern DECLSPEC int SDLCALL SDL_isspace(int x);
  375. extern DECLSPEC int SDLCALL SDL_toupper(int x);
  376. extern DECLSPEC int SDLCALL SDL_tolower(int x);
  377. extern DECLSPEC void *SDLCALL SDL_memset(SDL_OUT_BYTECAP(len) void *dst, int c, size_t len);
  378. #define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x)))
  379. #define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x)))
  380. /* Note that memset() is a byte assignment and this is a 32-bit assignment, so they're not directly equivalent. */
  381. SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
  382. {
  383. #if defined(__GNUC__) && defined(i386)
  384. int u0, u1, u2;
  385. __asm__ __volatile__ (
  386. "cld \n\t"
  387. "rep ; stosl \n\t"
  388. : "=&D" (u0), "=&a" (u1), "=&c" (u2)
  389. : "0" (dst), "1" (val), "2" (SDL_static_cast(Uint32, dwords))
  390. : "memory"
  391. );
  392. #else
  393. size_t _n = (dwords + 3) / 4;
  394. Uint32 *_p = SDL_static_cast(Uint32 *, dst);
  395. Uint32 _val = (val);
  396. if (dwords == 0)
  397. return;
  398. switch (dwords % 4)
  399. {
  400. case 0: do { *_p++ = _val; /* fallthrough */
  401. case 3: *_p++ = _val; /* fallthrough */
  402. case 2: *_p++ = _val; /* fallthrough */
  403. case 1: *_p++ = _val; /* fallthrough */
  404. } while ( --_n );
  405. }
  406. #endif
  407. }
  408. extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
  409. extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
  410. extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
  411. extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr);
  412. extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
  413. extern DECLSPEC size_t SDLCALL SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
  414. extern DECLSPEC size_t SDLCALL SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
  415. extern DECLSPEC int SDLCALL SDL_wcscmp(const wchar_t *str1, const wchar_t *str2);
  416. extern DECLSPEC size_t SDLCALL SDL_strlen(const char *str);
  417. extern DECLSPEC size_t SDLCALL SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
  418. extern DECLSPEC size_t SDLCALL SDL_utf8strlcpy(SDL_OUT_Z_CAP(dst_bytes) char *dst, const char *src, size_t dst_bytes);
  419. extern DECLSPEC size_t SDLCALL SDL_strlcat(SDL_INOUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
  420. extern DECLSPEC char *SDLCALL SDL_strdup(const char *str);
  421. extern DECLSPEC char *SDLCALL SDL_strrev(char *str);
  422. extern DECLSPEC char *SDLCALL SDL_strupr(char *str);
  423. extern DECLSPEC char *SDLCALL SDL_strlwr(char *str);
  424. extern DECLSPEC char *SDLCALL SDL_strchr(const char *str, int c);
  425. extern DECLSPEC char *SDLCALL SDL_strrchr(const char *str, int c);
  426. extern DECLSPEC char *SDLCALL SDL_strstr(const char *haystack, const char *needle);
  427. extern DECLSPEC size_t SDLCALL SDL_utf8strlen(const char *str);
  428. extern DECLSPEC char *SDLCALL SDL_itoa(int value, char *str, int radix);
  429. extern DECLSPEC char *SDLCALL SDL_uitoa(unsigned int value, char *str, int radix);
  430. extern DECLSPEC char *SDLCALL SDL_ltoa(long value, char *str, int radix);
  431. extern DECLSPEC char *SDLCALL SDL_ultoa(unsigned long value, char *str, int radix);
  432. extern DECLSPEC char *SDLCALL SDL_lltoa(Sint64 value, char *str, int radix);
  433. extern DECLSPEC char *SDLCALL SDL_ulltoa(Uint64 value, char *str, int radix);
  434. extern DECLSPEC int SDLCALL SDL_atoi(const char *str);
  435. extern DECLSPEC double SDLCALL SDL_atof(const char *str);
  436. extern DECLSPEC long SDLCALL SDL_strtol(const char *str, char **endp, int base);
  437. extern DECLSPEC unsigned long SDLCALL SDL_strtoul(const char *str, char **endp, int base);
  438. extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *str, char **endp, int base);
  439. extern DECLSPEC Uint64 SDLCALL SDL_strtoull(const char *str, char **endp, int base);
  440. extern DECLSPEC double SDLCALL SDL_strtod(const char *str, char **endp);
  441. extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2);
  442. extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2, size_t maxlen);
  443. extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1, const char *str2);
  444. extern DECLSPEC int SDLCALL SDL_strncasecmp(const char *str1, const char *str2, size_t len);
  445. extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, SDL_SCANF_FORMAT_STRING const char *fmt, ...) SDL_SCANF_VARARG_FUNC(2);
  446. extern DECLSPEC int SDLCALL SDL_vsscanf(const char *text, const char *fmt, va_list ap);
  447. extern DECLSPEC int SDLCALL SDL_snprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, SDL_PRINTF_FORMAT_STRING const char *fmt, ... ) SDL_PRINTF_VARARG_FUNC(3);
  448. extern DECLSPEC int SDLCALL SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, va_list ap);
  449. #ifndef HAVE_M_PI
  450. #ifndef M_PI
  451. #define M_PI 3.14159265358979323846264338327950288 /**< pi */
  452. #endif
  453. #endif
  454. extern DECLSPEC double SDLCALL SDL_acos(double x);
  455. extern DECLSPEC float SDLCALL SDL_acosf(float x);
  456. extern DECLSPEC double SDLCALL SDL_asin(double x);
  457. extern DECLSPEC float SDLCALL SDL_asinf(float x);
  458. extern DECLSPEC double SDLCALL SDL_atan(double x);
  459. extern DECLSPEC float SDLCALL SDL_atanf(float x);
  460. extern DECLSPEC double SDLCALL SDL_atan2(double x, double y);
  461. extern DECLSPEC float SDLCALL SDL_atan2f(float x, float y);
  462. extern DECLSPEC double SDLCALL SDL_ceil(double x);
  463. extern DECLSPEC float SDLCALL SDL_ceilf(float x);
  464. extern DECLSPEC double SDLCALL SDL_copysign(double x, double y);
  465. extern DECLSPEC float SDLCALL SDL_copysignf(float x, float y);
  466. extern DECLSPEC double SDLCALL SDL_cos(double x);
  467. extern DECLSPEC float SDLCALL SDL_cosf(float x);
  468. extern DECLSPEC double SDLCALL SDL_exp(double x);
  469. extern DECLSPEC float SDLCALL SDL_expf(float x);
  470. extern DECLSPEC double SDLCALL SDL_fabs(double x);
  471. extern DECLSPEC float SDLCALL SDL_fabsf(float x);
  472. extern DECLSPEC double SDLCALL SDL_floor(double x);
  473. extern DECLSPEC float SDLCALL SDL_floorf(float x);
  474. extern DECLSPEC double SDLCALL SDL_fmod(double x, double y);
  475. extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
  476. extern DECLSPEC double SDLCALL SDL_log(double x);
  477. extern DECLSPEC float SDLCALL SDL_logf(float x);
  478. extern DECLSPEC double SDLCALL SDL_log10(double x);
  479. extern DECLSPEC float SDLCALL SDL_log10f(float x);
  480. extern DECLSPEC double SDLCALL SDL_pow(double x, double y);
  481. extern DECLSPEC float SDLCALL SDL_powf(float x, float y);
  482. extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n);
  483. extern DECLSPEC float SDLCALL SDL_scalbnf(float x, int n);
  484. extern DECLSPEC double SDLCALL SDL_sin(double x);
  485. extern DECLSPEC float SDLCALL SDL_sinf(float x);
  486. extern DECLSPEC double SDLCALL SDL_sqrt(double x);
  487. extern DECLSPEC float SDLCALL SDL_sqrtf(float x);
  488. extern DECLSPEC double SDLCALL SDL_tan(double x);
  489. extern DECLSPEC float SDLCALL SDL_tanf(float x);
  490. /* The SDL implementation of iconv() returns these error codes */
  491. #define SDL_ICONV_ERROR (size_t)-1
  492. #define SDL_ICONV_E2BIG (size_t)-2
  493. #define SDL_ICONV_EILSEQ (size_t)-3
  494. #define SDL_ICONV_EINVAL (size_t)-4
  495. /* SDL_iconv_* are now always real symbols/types, not macros or inlined. */
  496. typedef struct _SDL_iconv_t *SDL_iconv_t;
  497. extern DECLSPEC SDL_iconv_t SDLCALL SDL_iconv_open(const char *tocode,
  498. const char *fromcode);
  499. extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
  500. extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf,
  501. size_t * inbytesleft, char **outbuf,
  502. size_t * outbytesleft);
  503. /**
  504. * This function converts a string between encodings in one pass, returning a
  505. * string that must be freed with SDL_free() or NULL on error.
  506. */
  507. extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode,
  508. const char *fromcode,
  509. const char *inbuf,
  510. size_t inbytesleft);
  511. #define SDL_iconv_utf8_locale(S) SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1)
  512. #define SDL_iconv_utf8_ucs2(S) (Uint16 *)SDL_iconv_string("UCS-2-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
  513. #define SDL_iconv_utf8_ucs4(S) (Uint32 *)SDL_iconv_string("UCS-4-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
  514. /* force builds using Clang's static analysis tools to use literal C runtime
  515. here, since there are possibly tests that are ineffective otherwise. */
  516. #if defined(__clang_analyzer__) && !defined(SDL_DISABLE_ANALYZE_MACROS)
  517. #define SDL_malloc malloc
  518. #define SDL_calloc calloc
  519. #define SDL_realloc realloc
  520. #define SDL_free free
  521. #define SDL_memset memset
  522. #define SDL_memcpy memcpy
  523. #define SDL_memmove memmove
  524. #define SDL_memcmp memcmp
  525. #define SDL_strlen strlen
  526. #define SDL_strlcpy strlcpy
  527. #define SDL_strlcat strlcat
  528. #define SDL_strdup strdup
  529. #define SDL_strchr strchr
  530. #define SDL_strrchr strrchr
  531. #define SDL_strstr strstr
  532. #define SDL_strcmp strcmp
  533. #define SDL_strncmp strncmp
  534. #define SDL_strcasecmp strcasecmp
  535. #define SDL_strncasecmp strncasecmp
  536. #define SDL_sscanf sscanf
  537. #define SDL_vsscanf vsscanf
  538. #define SDL_snprintf snprintf
  539. #define SDL_vsnprintf vsnprintf
  540. #endif
  541. SDL_FORCE_INLINE void *SDL_memcpy4(SDL_OUT_BYTECAP(dwords*4) void *dst, SDL_IN_BYTECAP(dwords*4) const void *src, size_t dwords)
  542. {
  543. return SDL_memcpy(dst, src, dwords * 4);
  544. }
  545. /* Ends C function definitions when using C++ */
  546. #ifdef __cplusplus
  547. }
  548. #endif
  549. #include "close_code.h"
  550. #endif /* SDL_stdinc_h_ */
  551. /* vi: set ts=4 sw=4 expandtab: */