SDL  2.0
SDL_stdinc.h
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
4 
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.
8 
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:
12 
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.
20 */
21 
22 /**
23  * \file SDL_stdinc.h
24  *
25  * This is a general header that includes C language support.
26  */
27 
28 #ifndef SDL_stdinc_h_
29 #define SDL_stdinc_h_
30 
31 #include "SDL_config.h"
32 
33 #ifdef HAVE_SYS_TYPES_H
34 #include <sys/types.h>
35 #endif
36 #ifdef HAVE_STDIO_H
37 #include <stdio.h>
38 #endif
39 #if defined(STDC_HEADERS)
40 # include <stdlib.h>
41 # include <stddef.h>
42 # include <stdarg.h>
43 #else
44 # if defined(HAVE_STDLIB_H)
45 # include <stdlib.h>
46 # elif defined(HAVE_MALLOC_H)
47 # include <malloc.h>
48 # endif
49 # if defined(HAVE_STDDEF_H)
50 # include <stddef.h>
51 # endif
52 # if defined(HAVE_STDARG_H)
53 # include <stdarg.h>
54 # endif
55 #endif
56 #ifdef HAVE_STRING_H
57 # if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
58 # include <memory.h>
59 # endif
60 # include <string.h>
61 #endif
62 #ifdef HAVE_STRINGS_H
63 # include <strings.h>
64 #endif
65 #ifdef HAVE_WCHAR_H
66 # include <wchar.h>
67 #endif
68 #if defined(HAVE_INTTYPES_H)
69 # include <inttypes.h>
70 #elif defined(HAVE_STDINT_H)
71 # include <stdint.h>
72 #endif
73 #ifdef HAVE_CTYPE_H
74 # include <ctype.h>
75 #endif
76 #ifdef HAVE_MATH_H
77 # if defined(__WINRT__)
78 /* Defining _USE_MATH_DEFINES is required to get M_PI to be defined on
79  WinRT. See http://msdn.microsoft.com/en-us/library/4hwaceh6.aspx
80  for more information.
81 */
82 # define _USE_MATH_DEFINES
83 # endif
84 # include <math.h>
85 #endif
86 #ifdef HAVE_FLOAT_H
87 # include <float.h>
88 #endif
89 #if defined(HAVE_ALLOCA) && !defined(alloca)
90 # if defined(HAVE_ALLOCA_H)
91 # include <alloca.h>
92 # elif defined(__GNUC__)
93 # define alloca __builtin_alloca
94 # elif defined(_MSC_VER)
95 # include <malloc.h>
96 # define alloca _alloca
97 # elif defined(__WATCOMC__)
98 # include <malloc.h>
99 # elif defined(__BORLANDC__)
100 # include <malloc.h>
101 # elif defined(__DMC__)
102 # include <stdlib.h>
103 # elif defined(__AIX__)
104 #pragma alloca
105 # elif defined(__MRC__)
106 void *alloca(unsigned);
107 # else
108 char *alloca();
109 # endif
110 #endif
111 
112 /**
113  * The number of elements in an array.
114  */
115 #define SDL_arraysize(array) (sizeof(array)/sizeof(array[0]))
116 #define SDL_TABLESIZE(table) SDL_arraysize(table)
117 
118 /**
119  * Macro useful for building other macros with strings in them
120  *
121  * e.g. #define LOG_ERROR(X) OutputDebugString(SDL_STRINGIFY_ARG(__FUNCTION__) ": " X "\n")
122  */
123 #define SDL_STRINGIFY_ARG(arg) #arg
124 
125 /**
126  * \name Cast operators
127  *
128  * Use proper C++ casts when compiled as C++ to be compatible with the option
129  * -Wold-style-cast of GCC (and -Werror=old-style-cast in GCC 4.2 and above).
130  */
131 /* @{ */
132 #ifdef __cplusplus
133 #define SDL_reinterpret_cast(type, expression) reinterpret_cast<type>(expression)
134 #define SDL_static_cast(type, expression) static_cast<type>(expression)
135 #define SDL_const_cast(type, expression) const_cast<type>(expression)
136 #else
137 #define SDL_reinterpret_cast(type, expression) ((type)(expression))
138 #define SDL_static_cast(type, expression) ((type)(expression))
139 #define SDL_const_cast(type, expression) ((type)(expression))
140 #endif
141 /* @} *//* Cast operators */
142 
143 /* Define a four character code as a Uint32 */
144 #define SDL_FOURCC(A, B, C, D) \
145  ((SDL_static_cast(Uint32, SDL_static_cast(Uint8, (A))) << 0) | \
146  (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (B))) << 8) | \
147  (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (C))) << 16) | \
148  (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (D))) << 24))
149 
150 /**
151  * \name Basic data types
152  */
153 /* @{ */
154 
155 #ifdef __CC_ARM
156 /* ARM's compiler throws warnings if we use an enum: like "SDL_bool x = a < b;" */
157 #define SDL_FALSE 0
158 #define SDL_TRUE 1
159 typedef int SDL_bool;
160 #else
161 typedef enum
162 {
163  SDL_FALSE = 0,
164  SDL_TRUE = 1
165 } SDL_bool;
166 #endif
167 
168 /**
169  * \brief A signed 8-bit integer type.
170  */
171 #define SDL_MAX_SINT8 ((Sint8)0x7F) /* 127 */
172 #define SDL_MIN_SINT8 ((Sint8)(~0x7F)) /* -128 */
173 typedef int8_t Sint8;
174 /**
175  * \brief An unsigned 8-bit integer type.
176  */
177 #define SDL_MAX_UINT8 ((Uint8)0xFF) /* 255 */
178 #define SDL_MIN_UINT8 ((Uint8)0x00) /* 0 */
179 typedef uint8_t Uint8;
180 /**
181  * \brief A signed 16-bit integer type.
182  */
183 #define SDL_MAX_SINT16 ((Sint16)0x7FFF) /* 32767 */
184 #define SDL_MIN_SINT16 ((Sint16)(~0x7FFF)) /* -32768 */
185 typedef int16_t Sint16;
186 /**
187  * \brief An unsigned 16-bit integer type.
188  */
189 #define SDL_MAX_UINT16 ((Uint16)0xFFFF) /* 65535 */
190 #define SDL_MIN_UINT16 ((Uint16)0x0000) /* 0 */
191 typedef uint16_t Uint16;
192 /**
193  * \brief A signed 32-bit integer type.
194  */
195 #define SDL_MAX_SINT32 ((Sint32)0x7FFFFFFF) /* 2147483647 */
196 #define SDL_MIN_SINT32 ((Sint32)(~0x7FFFFFFF)) /* -2147483648 */
197 typedef int32_t Sint32;
198 /**
199  * \brief An unsigned 32-bit integer type.
200  */
201 #define SDL_MAX_UINT32 ((Uint32)0xFFFFFFFFu) /* 4294967295 */
202 #define SDL_MIN_UINT32 ((Uint32)0x00000000) /* 0 */
203 typedef uint32_t Uint32;
204 
205 /**
206  * \brief A signed 64-bit integer type.
207  */
208 #define SDL_MAX_SINT64 ((Sint64)0x7FFFFFFFFFFFFFFFll) /* 9223372036854775807 */
209 #define SDL_MIN_SINT64 ((Sint64)(~0x7FFFFFFFFFFFFFFFll)) /* -9223372036854775808 */
210 typedef int64_t Sint64;
211 /**
212  * \brief An unsigned 64-bit integer type.
213  */
214 #define SDL_MAX_UINT64 ((Uint64)0xFFFFFFFFFFFFFFFFull) /* 18446744073709551615 */
215 #define SDL_MIN_UINT64 ((Uint64)(0x0000000000000000ull)) /* 0 */
216 typedef uint64_t Uint64;
217 
218 /* @} *//* Basic data types */
219 
220 /* Make sure we have macros for printing 64 bit values.
221  * <stdint.h> should define these but this is not true all platforms.
222  * (for example win32) */
223 #ifndef SDL_PRIs64
224 #ifdef PRIs64
225 #define SDL_PRIs64 PRIs64
226 #elif defined(__WIN32__)
227 #define SDL_PRIs64 "I64d"
228 #elif defined(__LINUX__) && defined(__LP64__)
229 #define SDL_PRIs64 "ld"
230 #else
231 #define SDL_PRIs64 "lld"
232 #endif
233 #endif
234 #ifndef SDL_PRIu64
235 #ifdef PRIu64
236 #define SDL_PRIu64 PRIu64
237 #elif defined(__WIN32__)
238 #define SDL_PRIu64 "I64u"
239 #elif defined(__LINUX__) && defined(__LP64__)
240 #define SDL_PRIu64 "lu"
241 #else
242 #define SDL_PRIu64 "llu"
243 #endif
244 #endif
245 #ifndef SDL_PRIx64
246 #ifdef PRIx64
247 #define SDL_PRIx64 PRIx64
248 #elif defined(__WIN32__)
249 #define SDL_PRIx64 "I64x"
250 #elif defined(__LINUX__) && defined(__LP64__)
251 #define SDL_PRIx64 "lx"
252 #else
253 #define SDL_PRIx64 "llx"
254 #endif
255 #endif
256 #ifndef SDL_PRIX64
257 #ifdef PRIX64
258 #define SDL_PRIX64 PRIX64
259 #elif defined(__WIN32__)
260 #define SDL_PRIX64 "I64X"
261 #elif defined(__LINUX__) && defined(__LP64__)
262 #define SDL_PRIX64 "lX"
263 #else
264 #define SDL_PRIX64 "llX"
265 #endif
266 #endif
267 
268 /* Annotations to help code analysis tools */
269 #ifdef SDL_DISABLE_ANALYZE_MACROS
270 #define SDL_IN_BYTECAP(x)
271 #define SDL_INOUT_Z_CAP(x)
272 #define SDL_OUT_Z_CAP(x)
273 #define SDL_OUT_CAP(x)
274 #define SDL_OUT_BYTECAP(x)
275 #define SDL_OUT_Z_BYTECAP(x)
276 #define SDL_PRINTF_FORMAT_STRING
277 #define SDL_SCANF_FORMAT_STRING
278 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
279 #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
280 #else
281 #if defined(_MSC_VER) && (_MSC_VER >= 1600) /* VS 2010 and above */
282 #include <sal.h>
283 
284 #define SDL_IN_BYTECAP(x) _In_bytecount_(x)
285 #define SDL_INOUT_Z_CAP(x) _Inout_z_cap_(x)
286 #define SDL_OUT_Z_CAP(x) _Out_z_cap_(x)
287 #define SDL_OUT_CAP(x) _Out_cap_(x)
288 #define SDL_OUT_BYTECAP(x) _Out_bytecap_(x)
289 #define SDL_OUT_Z_BYTECAP(x) _Out_z_bytecap_(x)
290 
291 #define SDL_PRINTF_FORMAT_STRING _Printf_format_string_
292 #define SDL_SCANF_FORMAT_STRING _Scanf_format_string_impl_
293 #else
294 #define SDL_IN_BYTECAP(x)
295 #define SDL_INOUT_Z_CAP(x)
296 #define SDL_OUT_Z_CAP(x)
297 #define SDL_OUT_CAP(x)
298 #define SDL_OUT_BYTECAP(x)
299 #define SDL_OUT_Z_BYTECAP(x)
300 #define SDL_PRINTF_FORMAT_STRING
301 #define SDL_SCANF_FORMAT_STRING
302 #endif
303 #if defined(__GNUC__)
304 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __printf__, fmtargnumber, fmtargnumber+1 )))
305 #define SDL_SCANF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __scanf__, fmtargnumber, fmtargnumber+1 )))
306 #else
307 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
308 #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
309 #endif
310 #endif /* SDL_DISABLE_ANALYZE_MACROS */
311 
312 #define SDL_COMPILE_TIME_ASSERT(name, x) \
313  typedef int SDL_compile_time_assert_ ## name[(x) * 2 - 1]
314 /** \cond */
315 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
316 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
317 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
318 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
319 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
320 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
321 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
322 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
323 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
324 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
325 /** \endcond */
326 
327 /* Check to make sure enums are the size of ints, for structure packing.
328  For both Watcom C/C++ and Borland C/C++ the compiler option that makes
329  enums having the size of an int must be enabled.
330  This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
331 */
332 
333 /** \cond */
334 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
335 #if !defined(__ANDROID__)
336  /* TODO: include/SDL_stdinc.h:174: error: size of array 'SDL_dummy_enum' is negative */
337 typedef enum
338 {
339  DUMMY_ENUM_VALUE
340 } SDL_DUMMY_ENUM;
341 
342 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
343 #endif
344 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
345 /** \endcond */
346 
347 #include "begin_code.h"
348 /* Set up for C function definitions, even when using C++ */
349 #ifdef __cplusplus
350 extern "C" {
351 #endif
352 
353 #ifdef HAVE_ALLOCA
354 #define SDL_stack_alloc(type, count) (type*)alloca(sizeof(type)*(count))
355 #define SDL_stack_free(data)
356 #else
357 #define SDL_stack_alloc(type, count) (type*)SDL_malloc(sizeof(type)*(count))
358 #define SDL_stack_free(data) SDL_free(data)
359 #endif
360 
361 extern DECLSPEC void *SDLCALL SDL_malloc(size_t size);
362 extern DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size);
363 extern DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size);
364 extern DECLSPEC void SDLCALL SDL_free(void *mem);
365 
366 typedef void *(SDLCALL *SDL_malloc_func)(size_t size);
367 typedef void *(SDLCALL *SDL_calloc_func)(size_t nmemb, size_t size);
368 typedef void *(SDLCALL *SDL_realloc_func)(void *mem, size_t size);
369 typedef void (SDLCALL *SDL_free_func)(void *mem);
370 
371 /**
372  * \brief Get the current set of SDL memory functions
373  */
374 extern DECLSPEC void SDLCALL SDL_GetMemoryFunctions(SDL_malloc_func *malloc_func,
375  SDL_calloc_func *calloc_func,
376  SDL_realloc_func *realloc_func,
377  SDL_free_func *free_func);
378 
379 /**
380  * \brief Replace SDL's memory allocation functions with a custom set
381  *
382  * \note If you are replacing SDL's memory functions, you should call
383  * SDL_GetNumAllocations() and be very careful if it returns non-zero.
384  * That means that your free function will be called with memory
385  * allocated by the previous memory allocation functions.
386  */
387 extern DECLSPEC int SDLCALL SDL_SetMemoryFunctions(SDL_malloc_func malloc_func,
388  SDL_calloc_func calloc_func,
389  SDL_realloc_func realloc_func,
390  SDL_free_func free_func);
391 
392 /**
393  * \brief Get the number of outstanding (unfreed) allocations
394  */
395 extern DECLSPEC int SDLCALL SDL_GetNumAllocations(void);
396 
397 extern DECLSPEC char *SDLCALL SDL_getenv(const char *name);
398 extern DECLSPEC int SDLCALL SDL_setenv(const char *name, const char *value, int overwrite);
399 
400 extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size, int (*compare) (const void *, const void *));
401 
402 extern DECLSPEC int SDLCALL SDL_abs(int x);
403 
404 /* !!! FIXME: these have side effects. You probably shouldn't use them. */
405 /* !!! FIXME: Maybe we do forceinline functions of SDL_mini, SDL_minf, etc? */
406 #define SDL_min(x, y) (((x) < (y)) ? (x) : (y))
407 #define SDL_max(x, y) (((x) > (y)) ? (x) : (y))
408 
409 extern DECLSPEC int SDLCALL SDL_isdigit(int x);
410 extern DECLSPEC int SDLCALL SDL_isspace(int x);
411 extern DECLSPEC int SDLCALL SDL_toupper(int x);
412 extern DECLSPEC int SDLCALL SDL_tolower(int x);
413 
414 extern DECLSPEC void *SDLCALL SDL_memset(SDL_OUT_BYTECAP(len) void *dst, int c, size_t len);
415 
416 #define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x)))
417 #define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x)))
418 
419 /* Note that memset() is a byte assignment and this is a 32-bit assignment, so they're not directly equivalent. */
420 SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
421 {
422 #if defined(__GNUC__) && defined(i386)
423  int u0, u1, u2;
424  __asm__ __volatile__ (
425  "cld \n\t"
426  "rep ; stosl \n\t"
427  : "=&D" (u0), "=&a" (u1), "=&c" (u2)
428  : "0" (dst), "1" (val), "2" (SDL_static_cast(Uint32, dwords))
429  : "memory"
430  );
431 #else
432  size_t _n = (dwords + 3) / 4;
433  Uint32 *_p = SDL_static_cast(Uint32 *, dst);
434  Uint32 _val = (val);
435  if (dwords == 0)
436  return;
437  switch (dwords % 4)
438  {
439  case 0: do { *_p++ = _val; /* fallthrough */
440  case 3: *_p++ = _val; /* fallthrough */
441  case 2: *_p++ = _val; /* fallthrough */
442  case 1: *_p++ = _val; /* fallthrough */
443  } while ( --_n );
444  }
445 #endif
446 }
447 
448 extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
449 
450 extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
451 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
452 
453 extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr);
454 extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
455 extern DECLSPEC size_t SDLCALL SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
456 extern DECLSPEC size_t SDLCALL SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
457 extern DECLSPEC int SDLCALL SDL_wcscmp(const wchar_t *str1, const wchar_t *str2);
458 
459 extern DECLSPEC size_t SDLCALL SDL_strlen(const char *str);
460 extern DECLSPEC size_t SDLCALL SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
461 extern DECLSPEC size_t SDLCALL SDL_utf8strlcpy(SDL_OUT_Z_CAP(dst_bytes) char *dst, const char *src, size_t dst_bytes);
462 extern DECLSPEC size_t SDLCALL SDL_strlcat(SDL_INOUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
463 extern DECLSPEC char *SDLCALL SDL_strdup(const char *str);
464 extern DECLSPEC char *SDLCALL SDL_strrev(char *str);
465 extern DECLSPEC char *SDLCALL SDL_strupr(char *str);
466 extern DECLSPEC char *SDLCALL SDL_strlwr(char *str);
467 extern DECLSPEC char *SDLCALL SDL_strchr(const char *str, int c);
468 extern DECLSPEC char *SDLCALL SDL_strrchr(const char *str, int c);
469 extern DECLSPEC char *SDLCALL SDL_strstr(const char *haystack, const char *needle);
470 extern DECLSPEC size_t SDLCALL SDL_utf8strlen(const char *str);
471 
472 extern DECLSPEC char *SDLCALL SDL_itoa(int value, char *str, int radix);
473 extern DECLSPEC char *SDLCALL SDL_uitoa(unsigned int value, char *str, int radix);
474 extern DECLSPEC char *SDLCALL SDL_ltoa(long value, char *str, int radix);
475 extern DECLSPEC char *SDLCALL SDL_ultoa(unsigned long value, char *str, int radix);
476 extern DECLSPEC char *SDLCALL SDL_lltoa(Sint64 value, char *str, int radix);
477 extern DECLSPEC char *SDLCALL SDL_ulltoa(Uint64 value, char *str, int radix);
478 
479 extern DECLSPEC int SDLCALL SDL_atoi(const char *str);
480 extern DECLSPEC double SDLCALL SDL_atof(const char *str);
481 extern DECLSPEC long SDLCALL SDL_strtol(const char *str, char **endp, int base);
482 extern DECLSPEC unsigned long SDLCALL SDL_strtoul(const char *str, char **endp, int base);
483 extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *str, char **endp, int base);
484 extern DECLSPEC Uint64 SDLCALL SDL_strtoull(const char *str, char **endp, int base);
485 extern DECLSPEC double SDLCALL SDL_strtod(const char *str, char **endp);
486 
487 extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2);
488 extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2, size_t maxlen);
489 extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1, const char *str2);
490 extern DECLSPEC int SDLCALL SDL_strncasecmp(const char *str1, const char *str2, size_t len);
491 
492 extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, SDL_SCANF_FORMAT_STRING const char *fmt, ...) SDL_SCANF_VARARG_FUNC(2);
493 extern DECLSPEC int SDLCALL SDL_vsscanf(const char *text, const char *fmt, va_list ap);
494 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);
495 extern DECLSPEC int SDLCALL SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, va_list ap);
496 
497 #ifndef HAVE_M_PI
498 #ifndef M_PI
499 #define M_PI 3.14159265358979323846264338327950288 /**< pi */
500 #endif
501 #endif
502 
503 extern DECLSPEC double SDLCALL SDL_acos(double x);
504 extern DECLSPEC float SDLCALL SDL_acosf(float x);
505 extern DECLSPEC double SDLCALL SDL_asin(double x);
506 extern DECLSPEC float SDLCALL SDL_asinf(float x);
507 extern DECLSPEC double SDLCALL SDL_atan(double x);
508 extern DECLSPEC float SDLCALL SDL_atanf(float x);
509 extern DECLSPEC double SDLCALL SDL_atan2(double x, double y);
510 extern DECLSPEC float SDLCALL SDL_atan2f(float x, float y);
511 extern DECLSPEC double SDLCALL SDL_ceil(double x);
512 extern DECLSPEC float SDLCALL SDL_ceilf(float x);
513 extern DECLSPEC double SDLCALL SDL_copysign(double x, double y);
514 extern DECLSPEC float SDLCALL SDL_copysignf(float x, float y);
515 extern DECLSPEC double SDLCALL SDL_cos(double x);
516 extern DECLSPEC float SDLCALL SDL_cosf(float x);
517 extern DECLSPEC double SDLCALL SDL_exp(double x);
518 extern DECLSPEC float SDLCALL SDL_expf(float x);
519 extern DECLSPEC double SDLCALL SDL_fabs(double x);
520 extern DECLSPEC float SDLCALL SDL_fabsf(float x);
521 extern DECLSPEC double SDLCALL SDL_floor(double x);
522 extern DECLSPEC float SDLCALL SDL_floorf(float x);
523 extern DECLSPEC double SDLCALL SDL_fmod(double x, double y);
524 extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
525 extern DECLSPEC double SDLCALL SDL_log(double x);
526 extern DECLSPEC float SDLCALL SDL_logf(float x);
527 extern DECLSPEC double SDLCALL SDL_log10(double x);
528 extern DECLSPEC float SDLCALL SDL_log10f(float x);
529 extern DECLSPEC double SDLCALL SDL_pow(double x, double y);
530 extern DECLSPEC float SDLCALL SDL_powf(float x, float y);
531 extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n);
532 extern DECLSPEC float SDLCALL SDL_scalbnf(float x, int n);
533 extern DECLSPEC double SDLCALL SDL_sin(double x);
534 extern DECLSPEC float SDLCALL SDL_sinf(float x);
535 extern DECLSPEC double SDLCALL SDL_sqrt(double x);
536 extern DECLSPEC float SDLCALL SDL_sqrtf(float x);
537 extern DECLSPEC double SDLCALL SDL_tan(double x);
538 extern DECLSPEC float SDLCALL SDL_tanf(float x);
539 
540 /* The SDL implementation of iconv() returns these error codes */
541 #define SDL_ICONV_ERROR (size_t)-1
542 #define SDL_ICONV_E2BIG (size_t)-2
543 #define SDL_ICONV_EILSEQ (size_t)-3
544 #define SDL_ICONV_EINVAL (size_t)-4
545 
546 /* SDL_iconv_* are now always real symbols/types, not macros or inlined. */
547 typedef struct _SDL_iconv_t *SDL_iconv_t;
548 extern DECLSPEC SDL_iconv_t SDLCALL SDL_iconv_open(const char *tocode,
549  const char *fromcode);
550 extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
551 extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf,
552  size_t * inbytesleft, char **outbuf,
553  size_t * outbytesleft);
554 /**
555  * This function converts a string between encodings in one pass, returning a
556  * string that must be freed with SDL_free() or NULL on error.
557  */
558 extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode,
559  const char *fromcode,
560  const char *inbuf,
561  size_t inbytesleft);
562 #define SDL_iconv_utf8_locale(S) SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1)
563 #define SDL_iconv_utf8_ucs2(S) (Uint16 *)SDL_iconv_string("UCS-2-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
564 #define SDL_iconv_utf8_ucs4(S) (Uint32 *)SDL_iconv_string("UCS-4-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
565 
566 /* force builds using Clang's static analysis tools to use literal C runtime
567  here, since there are possibly tests that are ineffective otherwise. */
568 #if defined(__clang_analyzer__) && !defined(SDL_DISABLE_ANALYZE_MACROS)
569 #define SDL_malloc malloc
570 #define SDL_calloc calloc
571 #define SDL_realloc realloc
572 #define SDL_free free
573 #define SDL_memset memset
574 #define SDL_memcpy memcpy
575 #define SDL_memmove memmove
576 #define SDL_memcmp memcmp
577 #define SDL_strlen strlen
578 #define SDL_strlcpy strlcpy
579 #define SDL_strlcat strlcat
580 #define SDL_strdup strdup
581 #define SDL_strchr strchr
582 #define SDL_strrchr strrchr
583 #define SDL_strstr strstr
584 #define SDL_strcmp strcmp
585 #define SDL_strncmp strncmp
586 #define SDL_strcasecmp strcasecmp
587 #define SDL_strncasecmp strncasecmp
588 #define SDL_sscanf sscanf
589 #define SDL_vsscanf vsscanf
590 #define SDL_snprintf snprintf
591 #define SDL_vsnprintf vsnprintf
592 #endif
593 
594 SDL_FORCE_INLINE void *SDL_memcpy4(SDL_OUT_BYTECAP(dwords*4) void *dst, SDL_IN_BYTECAP(dwords*4) const void *src, size_t dwords)
595 {
596  return SDL_memcpy(dst, src, dwords * 4);
597 }
598 
599 /* Ends C function definitions when using C++ */
600 #ifdef __cplusplus
601 }
602 #endif
603 #include "close_code.h"
604 
605 #endif /* SDL_stdinc_h_ */
606 
607 /* vi: set ts=4 sw=4 expandtab: */