2 Simple DirectMedia Layer
3 Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
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"
34 #ifndef _DARWIN_C_SOURCE
35 #define _DARWIN_C_SOURCE 1 /* for memset_pattern4() */
39 #ifdef HAVE_SYS_TYPES_H
40 #include <sys/types.h>
45 #if defined(STDC_HEADERS)
50 # if defined(HAVE_STDLIB_H)
52 # elif defined(HAVE_MALLOC_H)
55 # if defined(HAVE_STDDEF_H)
58 # if defined(HAVE_STDARG_H)
63 # if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
74 #if defined(HAVE_INTTYPES_H)
75 # include <inttypes.h>
76 #elif defined(HAVE_STDINT_H)
83 # if defined(__WINRT__)
84 /* Defining _USE_MATH_DEFINES is required to get M_PI to be defined on
85 WinRT. See http://msdn.microsoft.com/en-us/library/4hwaceh6.aspx
88 # define _USE_MATH_DEFINES
95 #if defined(HAVE_ALLOCA) && !defined(alloca)
96 # if defined(HAVE_ALLOCA_H)
98 # elif defined(__GNUC__)
99 # define alloca __builtin_alloca
100 # elif defined(_MSC_VER)
102 # define alloca _alloca
103 # elif defined(__WATCOMC__)
105 # elif defined(__BORLANDC__)
107 # elif defined(__DMC__)
109 # elif defined(__AIX__)
111 # elif defined(__MRC__)
112 void *alloca(unsigned);
119 * The number of elements in an array.
121 #define SDL_arraysize(array) (sizeof(array)/sizeof(array[0]))
122 #define SDL_TABLESIZE(table) SDL_arraysize(table)
125 * Macro useful for building other macros with strings in them
127 * e.g. #define LOG_ERROR(X) OutputDebugString(SDL_STRINGIFY_ARG(__FUNCTION__) ": " X "\n")
129 #define SDL_STRINGIFY_ARG(arg) #arg
132 * \name Cast operators
134 * Use proper C++ casts when compiled as C++ to be compatible with the option
135 * -Wold-style-cast of GCC (and -Werror=old-style-cast in GCC 4.2 and above).
139 #define SDL_reinterpret_cast(type, expression) reinterpret_cast<type>(expression)
140 #define SDL_static_cast(type, expression) static_cast<type>(expression)
141 #define SDL_const_cast(type, expression) const_cast<type>(expression)
143 #define SDL_reinterpret_cast(type, expression) ((type)(expression))
144 #define SDL_static_cast(type, expression) ((type)(expression))
145 #define SDL_const_cast(type, expression) ((type)(expression))
147 /* @} *//* Cast operators */
149 /* Define a four character code as a Uint32 */
150 #define SDL_FOURCC(A, B, C, D) \
151 ((SDL_static_cast(Uint32, SDL_static_cast(Uint8, (A))) << 0) | \
152 (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (B))) << 8) | \
153 (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (C))) << 16) | \
154 (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (D))) << 24))
157 * \name Basic data types
162 /* ARM's compiler throws warnings if we use an enum: like "SDL_bool x = a < b;" */
165 typedef int SDL_bool;
175 * \brief A signed 8-bit integer type.
177 #define SDL_MAX_SINT8 ((Sint8)0x7F) /* 127 */
178 #define SDL_MIN_SINT8 ((Sint8)(~0x7F)) /* -128 */
179 typedef int8_t Sint8;
181 * \brief An unsigned 8-bit integer type.
183 #define SDL_MAX_UINT8 ((Uint8)0xFF) /* 255 */
184 #define SDL_MIN_UINT8 ((Uint8)0x00) /* 0 */
185 typedef uint8_t Uint8;
187 * \brief A signed 16-bit integer type.
189 #define SDL_MAX_SINT16 ((Sint16)0x7FFF) /* 32767 */
190 #define SDL_MIN_SINT16 ((Sint16)(~0x7FFF)) /* -32768 */
191 typedef int16_t Sint16;
193 * \brief An unsigned 16-bit integer type.
195 #define SDL_MAX_UINT16 ((Uint16)0xFFFF) /* 65535 */
196 #define SDL_MIN_UINT16 ((Uint16)0x0000) /* 0 */
197 typedef uint16_t Uint16;
199 * \brief A signed 32-bit integer type.
201 #define SDL_MAX_SINT32 ((Sint32)0x7FFFFFFF) /* 2147483647 */
202 #define SDL_MIN_SINT32 ((Sint32)(~0x7FFFFFFF)) /* -2147483648 */
203 typedef int32_t Sint32;
205 * \brief An unsigned 32-bit integer type.
207 #define SDL_MAX_UINT32 ((Uint32)0xFFFFFFFFu) /* 4294967295 */
208 #define SDL_MIN_UINT32 ((Uint32)0x00000000) /* 0 */
209 typedef uint32_t Uint32;
212 * \brief A signed 64-bit integer type.
214 #define SDL_MAX_SINT64 ((Sint64)0x7FFFFFFFFFFFFFFFll) /* 9223372036854775807 */
215 #define SDL_MIN_SINT64 ((Sint64)(~0x7FFFFFFFFFFFFFFFll)) /* -9223372036854775808 */
216 typedef int64_t Sint64;
218 * \brief An unsigned 64-bit integer type.
220 #define SDL_MAX_UINT64 ((Uint64)0xFFFFFFFFFFFFFFFFull) /* 18446744073709551615 */
221 #define SDL_MIN_UINT64 ((Uint64)(0x0000000000000000ull)) /* 0 */
222 typedef uint64_t Uint64;
224 /* @} *//* Basic data types */
226 /* Make sure we have macros for printing 64 bit values.
227 * <stdint.h> should define these but this is not true all platforms.
228 * (for example win32) */
231 #define SDL_PRIs64 PRIs64
232 #elif defined(__WIN32__)
233 #define SDL_PRIs64 "I64d"
234 #elif defined(__LINUX__) && defined(__LP64__)
235 #define SDL_PRIs64 "ld"
237 #define SDL_PRIs64 "lld"
242 #define SDL_PRIu64 PRIu64
243 #elif defined(__WIN32__)
244 #define SDL_PRIu64 "I64u"
245 #elif defined(__LINUX__) && defined(__LP64__)
246 #define SDL_PRIu64 "lu"
248 #define SDL_PRIu64 "llu"
253 #define SDL_PRIx64 PRIx64
254 #elif defined(__WIN32__)
255 #define SDL_PRIx64 "I64x"
256 #elif defined(__LINUX__) && defined(__LP64__)
257 #define SDL_PRIx64 "lx"
259 #define SDL_PRIx64 "llx"
264 #define SDL_PRIX64 PRIX64
265 #elif defined(__WIN32__)
266 #define SDL_PRIX64 "I64X"
267 #elif defined(__LINUX__) && defined(__LP64__)
268 #define SDL_PRIX64 "lX"
270 #define SDL_PRIX64 "llX"
274 /* Annotations to help code analysis tools */
275 #ifdef SDL_DISABLE_ANALYZE_MACROS
276 #define SDL_IN_BYTECAP(x)
277 #define SDL_INOUT_Z_CAP(x)
278 #define SDL_OUT_Z_CAP(x)
279 #define SDL_OUT_CAP(x)
280 #define SDL_OUT_BYTECAP(x)
281 #define SDL_OUT_Z_BYTECAP(x)
282 #define SDL_PRINTF_FORMAT_STRING
283 #define SDL_SCANF_FORMAT_STRING
284 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
285 #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
287 #if defined(_MSC_VER) && (_MSC_VER >= 1600) /* VS 2010 and above */
290 #define SDL_IN_BYTECAP(x) _In_bytecount_(x)
291 #define SDL_INOUT_Z_CAP(x) _Inout_z_cap_(x)
292 #define SDL_OUT_Z_CAP(x) _Out_z_cap_(x)
293 #define SDL_OUT_CAP(x) _Out_cap_(x)
294 #define SDL_OUT_BYTECAP(x) _Out_bytecap_(x)
295 #define SDL_OUT_Z_BYTECAP(x) _Out_z_bytecap_(x)
297 #define SDL_PRINTF_FORMAT_STRING _Printf_format_string_
298 #define SDL_SCANF_FORMAT_STRING _Scanf_format_string_impl_
300 #define SDL_IN_BYTECAP(x)
301 #define SDL_INOUT_Z_CAP(x)
302 #define SDL_OUT_Z_CAP(x)
303 #define SDL_OUT_CAP(x)
304 #define SDL_OUT_BYTECAP(x)
305 #define SDL_OUT_Z_BYTECAP(x)
306 #define SDL_PRINTF_FORMAT_STRING
307 #define SDL_SCANF_FORMAT_STRING
309 #if defined(__GNUC__)
310 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __printf__, fmtargnumber, fmtargnumber+1 )))
311 #define SDL_SCANF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __scanf__, fmtargnumber, fmtargnumber+1 )))
313 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
314 #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
316 #endif /* SDL_DISABLE_ANALYZE_MACROS */
318 #define SDL_COMPILE_TIME_ASSERT(name, x) \
319 typedef int SDL_compile_time_assert_ ## name[(x) * 2 - 1]
321 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
322 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
323 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
324 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
325 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
326 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
327 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
328 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
329 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
330 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
333 /* Check to make sure enums are the size of ints, for structure packing.
334 For both Watcom C/C++ and Borland C/C++ the compiler option that makes
335 enums having the size of an int must be enabled.
336 This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
340 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
341 #if !defined(__ANDROID__)
342 /* TODO: include/SDL_stdinc.h:174: error: size of array 'SDL_dummy_enum' is negative */
348 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
350 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
353 #include "begin_code.h"
354 /* Set up for C function definitions, even when using C++ */
360 #define SDL_stack_alloc(type, count) (type*)alloca(sizeof(type)*(count))
361 #define SDL_stack_free(data)
363 #define SDL_stack_alloc(type, count) (type*)SDL_malloc(sizeof(type)*(count))
364 #define SDL_stack_free(data) SDL_free(data)
367 extern DECLSPEC void *SDLCALL SDL_malloc(size_t size);
368 extern DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size);
369 extern DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size);
370 extern DECLSPEC void SDLCALL SDL_free(void *mem);
372 typedef void *(SDLCALL *SDL_malloc_func)(size_t size);
373 typedef void *(SDLCALL *SDL_calloc_func)(size_t nmemb, size_t size);
374 typedef void *(SDLCALL *SDL_realloc_func)(void *mem, size_t size);
375 typedef void (SDLCALL *SDL_free_func)(void *mem);
378 * \brief Get the current set of SDL memory functions
380 extern DECLSPEC void SDLCALL SDL_GetMemoryFunctions(SDL_malloc_func *malloc_func,
381 SDL_calloc_func *calloc_func,
382 SDL_realloc_func *realloc_func,
383 SDL_free_func *free_func);
386 * \brief Replace SDL's memory allocation functions with a custom set
388 * \note If you are replacing SDL's memory functions, you should call
389 * SDL_GetNumAllocations() and be very careful if it returns non-zero.
390 * That means that your free function will be called with memory
391 * allocated by the previous memory allocation functions.
393 extern DECLSPEC int SDLCALL SDL_SetMemoryFunctions(SDL_malloc_func malloc_func,
394 SDL_calloc_func calloc_func,
395 SDL_realloc_func realloc_func,
396 SDL_free_func free_func);
399 * \brief Get the number of outstanding (unfreed) allocations
401 extern DECLSPEC int SDLCALL SDL_GetNumAllocations(void);
403 extern DECLSPEC char *SDLCALL SDL_getenv(const char *name);
404 extern DECLSPEC int SDLCALL SDL_setenv(const char *name, const char *value, int overwrite);
406 extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size, int (*compare) (const void *, const void *));
408 extern DECLSPEC int SDLCALL SDL_abs(int x);
410 /* !!! FIXME: these have side effects. You probably shouldn't use them. */
411 /* !!! FIXME: Maybe we do forceinline functions of SDL_mini, SDL_minf, etc? */
412 #define SDL_min(x, y) (((x) < (y)) ? (x) : (y))
413 #define SDL_max(x, y) (((x) > (y)) ? (x) : (y))
415 extern DECLSPEC int SDLCALL SDL_isdigit(int x);
416 extern DECLSPEC int SDLCALL SDL_isspace(int x);
417 extern DECLSPEC int SDLCALL SDL_isupper(int x);
418 extern DECLSPEC int SDLCALL SDL_islower(int x);
419 extern DECLSPEC int SDLCALL SDL_toupper(int x);
420 extern DECLSPEC int SDLCALL SDL_tolower(int x);
422 extern DECLSPEC Uint32 SDLCALL SDL_crc32(Uint32 crc, const void *data, size_t len);
424 extern DECLSPEC void *SDLCALL SDL_memset(SDL_OUT_BYTECAP(len) void *dst, int c, size_t len);
426 #define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x)))
427 #define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x)))
428 #define SDL_zeroa(x) SDL_memset((x), 0, sizeof((x)))
430 /* Note that memset() is a byte assignment and this is a 32-bit assignment, so they're not directly equivalent. */
431 SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
434 memset_pattern4(dst, &val, dwords * 4);
435 #elif defined(__GNUC__) && defined(i386)
437 __asm__ __volatile__ (
440 : "=&D" (u0), "=&a" (u1), "=&c" (u2)
441 : "0" (dst), "1" (val), "2" (SDL_static_cast(Uint32, dwords))
445 size_t _n = (dwords + 3) / 4;
446 Uint32 *_p = SDL_static_cast(Uint32 *, dst);
452 case 0: do { *_p++ = _val; /* fallthrough */
453 case 3: *_p++ = _val; /* fallthrough */
454 case 2: *_p++ = _val; /* fallthrough */
455 case 1: *_p++ = _val; /* fallthrough */
461 extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
463 extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
464 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
466 extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
467 extern DECLSPEC size_t SDLCALL SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
468 extern DECLSPEC size_t SDLCALL SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
469 extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr);
470 extern DECLSPEC wchar_t *SDLCALL SDL_wcsstr(const wchar_t *haystack, const wchar_t *needle);
472 extern DECLSPEC int SDLCALL SDL_wcscmp(const wchar_t *str1, const wchar_t *str2);
473 extern DECLSPEC int SDLCALL SDL_wcsncmp(const wchar_t *str1, const wchar_t *str2, size_t maxlen);
474 extern DECLSPEC int SDLCALL SDL_wcscasecmp(const wchar_t *str1, const wchar_t *str2);
475 extern DECLSPEC int SDLCALL SDL_wcsncasecmp(const wchar_t *str1, const wchar_t *str2, size_t len);
477 extern DECLSPEC size_t SDLCALL SDL_strlen(const char *str);
478 extern DECLSPEC size_t SDLCALL SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
479 extern DECLSPEC size_t SDLCALL SDL_utf8strlcpy(SDL_OUT_Z_CAP(dst_bytes) char *dst, const char *src, size_t dst_bytes);
480 extern DECLSPEC size_t SDLCALL SDL_strlcat(SDL_INOUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
481 extern DECLSPEC char *SDLCALL SDL_strdup(const char *str);
482 extern DECLSPEC char *SDLCALL SDL_strrev(char *str);
483 extern DECLSPEC char *SDLCALL SDL_strupr(char *str);
484 extern DECLSPEC char *SDLCALL SDL_strlwr(char *str);
485 extern DECLSPEC char *SDLCALL SDL_strchr(const char *str, int c);
486 extern DECLSPEC char *SDLCALL SDL_strrchr(const char *str, int c);
487 extern DECLSPEC char *SDLCALL SDL_strstr(const char *haystack, const char *needle);
488 extern DECLSPEC char *SDLCALL SDL_strtokr(char *s1, const char *s2, char **saveptr);
489 extern DECLSPEC size_t SDLCALL SDL_utf8strlen(const char *str);
491 extern DECLSPEC char *SDLCALL SDL_itoa(int value, char *str, int radix);
492 extern DECLSPEC char *SDLCALL SDL_uitoa(unsigned int value, char *str, int radix);
493 extern DECLSPEC char *SDLCALL SDL_ltoa(long value, char *str, int radix);
494 extern DECLSPEC char *SDLCALL SDL_ultoa(unsigned long value, char *str, int radix);
495 extern DECLSPEC char *SDLCALL SDL_lltoa(Sint64 value, char *str, int radix);
496 extern DECLSPEC char *SDLCALL SDL_ulltoa(Uint64 value, char *str, int radix);
498 extern DECLSPEC int SDLCALL SDL_atoi(const char *str);
499 extern DECLSPEC double SDLCALL SDL_atof(const char *str);
500 extern DECLSPEC long SDLCALL SDL_strtol(const char *str, char **endp, int base);
501 extern DECLSPEC unsigned long SDLCALL SDL_strtoul(const char *str, char **endp, int base);
502 extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *str, char **endp, int base);
503 extern DECLSPEC Uint64 SDLCALL SDL_strtoull(const char *str, char **endp, int base);
504 extern DECLSPEC double SDLCALL SDL_strtod(const char *str, char **endp);
506 extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2);
507 extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2, size_t maxlen);
508 extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1, const char *str2);
509 extern DECLSPEC int SDLCALL SDL_strncasecmp(const char *str1, const char *str2, size_t len);
511 extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, SDL_SCANF_FORMAT_STRING const char *fmt, ...) SDL_SCANF_VARARG_FUNC(2);
512 extern DECLSPEC int SDLCALL SDL_vsscanf(const char *text, const char *fmt, va_list ap);
513 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);
514 extern DECLSPEC int SDLCALL SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, va_list ap);
518 #define M_PI 3.14159265358979323846264338327950288 /**< pi */
522 extern DECLSPEC double SDLCALL SDL_acos(double x);
523 extern DECLSPEC float SDLCALL SDL_acosf(float x);
524 extern DECLSPEC double SDLCALL SDL_asin(double x);
525 extern DECLSPEC float SDLCALL SDL_asinf(float x);
526 extern DECLSPEC double SDLCALL SDL_atan(double x);
527 extern DECLSPEC float SDLCALL SDL_atanf(float x);
528 extern DECLSPEC double SDLCALL SDL_atan2(double x, double y);
529 extern DECLSPEC float SDLCALL SDL_atan2f(float x, float y);
530 extern DECLSPEC double SDLCALL SDL_ceil(double x);
531 extern DECLSPEC float SDLCALL SDL_ceilf(float x);
532 extern DECLSPEC double SDLCALL SDL_copysign(double x, double y);
533 extern DECLSPEC float SDLCALL SDL_copysignf(float x, float y);
534 extern DECLSPEC double SDLCALL SDL_cos(double x);
535 extern DECLSPEC float SDLCALL SDL_cosf(float x);
536 extern DECLSPEC double SDLCALL SDL_exp(double x);
537 extern DECLSPEC float SDLCALL SDL_expf(float x);
538 extern DECLSPEC double SDLCALL SDL_fabs(double x);
539 extern DECLSPEC float SDLCALL SDL_fabsf(float x);
540 extern DECLSPEC double SDLCALL SDL_floor(double x);
541 extern DECLSPEC float SDLCALL SDL_floorf(float x);
542 extern DECLSPEC double SDLCALL SDL_trunc(double x);
543 extern DECLSPEC float SDLCALL SDL_truncf(float x);
544 extern DECLSPEC double SDLCALL SDL_fmod(double x, double y);
545 extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
546 extern DECLSPEC double SDLCALL SDL_log(double x);
547 extern DECLSPEC float SDLCALL SDL_logf(float x);
548 extern DECLSPEC double SDLCALL SDL_log10(double x);
549 extern DECLSPEC float SDLCALL SDL_log10f(float x);
550 extern DECLSPEC double SDLCALL SDL_pow(double x, double y);
551 extern DECLSPEC float SDLCALL SDL_powf(float x, float y);
552 extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n);
553 extern DECLSPEC float SDLCALL SDL_scalbnf(float x, int n);
554 extern DECLSPEC double SDLCALL SDL_sin(double x);
555 extern DECLSPEC float SDLCALL SDL_sinf(float x);
556 extern DECLSPEC double SDLCALL SDL_sqrt(double x);
557 extern DECLSPEC float SDLCALL SDL_sqrtf(float x);
558 extern DECLSPEC double SDLCALL SDL_tan(double x);
559 extern DECLSPEC float SDLCALL SDL_tanf(float x);
561 /* The SDL implementation of iconv() returns these error codes */
562 #define SDL_ICONV_ERROR (size_t)-1
563 #define SDL_ICONV_E2BIG (size_t)-2
564 #define SDL_ICONV_EILSEQ (size_t)-3
565 #define SDL_ICONV_EINVAL (size_t)-4
567 /* SDL_iconv_* are now always real symbols/types, not macros or inlined. */
568 typedef struct _SDL_iconv_t *SDL_iconv_t;
569 extern DECLSPEC SDL_iconv_t SDLCALL SDL_iconv_open(const char *tocode,
570 const char *fromcode);
571 extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
572 extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf,
573 size_t * inbytesleft, char **outbuf,
574 size_t * outbytesleft);
576 * This function converts a string between encodings in one pass, returning a
577 * string that must be freed with SDL_free() or NULL on error.
579 extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode,
580 const char *fromcode,
583 #define SDL_iconv_utf8_locale(S) SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1)
584 #define SDL_iconv_utf8_ucs2(S) (Uint16 *)SDL_iconv_string("UCS-2-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
585 #define SDL_iconv_utf8_ucs4(S) (Uint32 *)SDL_iconv_string("UCS-4-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
587 /* force builds using Clang's static analysis tools to use literal C runtime
588 here, since there are possibly tests that are ineffective otherwise. */
589 #if defined(__clang_analyzer__) && !defined(SDL_DISABLE_ANALYZE_MACROS)
591 /* The analyzer knows about strlcpy even when the system doesn't provide it */
593 size_t strlcpy(char* dst, const char* src, size_t size);
596 /* The analyzer knows about strlcat even when the system doesn't provide it */
598 size_t strlcat(char* dst, const char* src, size_t size);
601 #define SDL_malloc malloc
602 #define SDL_calloc calloc
603 #define SDL_realloc realloc
604 #define SDL_free free
605 #define SDL_memset memset
606 #define SDL_memcpy memcpy
607 #define SDL_memmove memmove
608 #define SDL_memcmp memcmp
609 #define SDL_strlcpy strlcpy
610 #define SDL_strlcat strlcat
611 #define SDL_strlen strlen
612 #define SDL_wcslen wcslen
613 #define SDL_wcslcpy wcslcpy
614 #define SDL_wcslcat wcslcat
615 #define SDL_strdup strdup
616 #define SDL_wcsdup wcsdup
617 #define SDL_strchr strchr
618 #define SDL_strrchr strrchr
619 #define SDL_strstr strstr
620 #define SDL_wcsstr wcsstr
621 #define SDL_strtokr strtok_r
622 #define SDL_strcmp strcmp
623 #define SDL_wcscmp wcscmp
624 #define SDL_strncmp strncmp
625 #define SDL_wcsncmp wcsncmp
626 #define SDL_strcasecmp strcasecmp
627 #define SDL_strncasecmp strncasecmp
628 #define SDL_sscanf sscanf
629 #define SDL_vsscanf vsscanf
630 #define SDL_snprintf snprintf
631 #define SDL_vsnprintf vsnprintf
634 SDL_FORCE_INLINE void *SDL_memcpy4(SDL_OUT_BYTECAP(dwords*4) void *dst, SDL_IN_BYTECAP(dwords*4) const void *src, size_t dwords)
636 return SDL_memcpy(dst, src, dwords * 4);
639 /* Ends C function definitions when using C++ */
643 #include "close_code.h"
645 #endif /* SDL_stdinc_h_ */
647 /* vi: set ts=4 sw=4 expandtab: */