SDL  2.0
SDL_stdinc.h
Go to the documentation of this file.
1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2022 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 __APPLE__
34 #ifndef _DARWIN_C_SOURCE
35 #define _DARWIN_C_SOURCE 1 /* for memset_pattern4() */
36 #endif
37 #endif
38 
39 #ifdef HAVE_SYS_TYPES_H
40 #include <sys/types.h>
41 #endif
42 #ifdef HAVE_STDIO_H
43 #include <stdio.h>
44 #endif
45 #if defined(STDC_HEADERS)
46 # include <stdlib.h>
47 # include <stddef.h>
48 # include <stdarg.h>
49 #else
50 # if defined(HAVE_STDLIB_H)
51 # include <stdlib.h>
52 # elif defined(HAVE_MALLOC_H)
53 # include <malloc.h>
54 # endif
55 # if defined(HAVE_STDDEF_H)
56 # include <stddef.h>
57 # endif
58 # if defined(HAVE_STDARG_H)
59 # include <stdarg.h>
60 # endif
61 #endif
62 #ifdef HAVE_STRING_H
63 # if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
64 # include <memory.h>
65 # endif
66 # include <string.h>
67 #endif
68 #ifdef HAVE_STRINGS_H
69 # include <strings.h>
70 #endif
71 #ifdef HAVE_WCHAR_H
72 # include <wchar.h>
73 #endif
74 #if defined(HAVE_INTTYPES_H)
75 # include <inttypes.h>
76 #elif defined(HAVE_STDINT_H)
77 # include <stdint.h>
78 #endif
79 #ifdef HAVE_CTYPE_H
80 # include <ctype.h>
81 #endif
82 #ifdef HAVE_MATH_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
86  for more information.
87 */
88 # define _USE_MATH_DEFINES
89 # endif
90 # include <math.h>
91 #endif
92 #ifdef HAVE_FLOAT_H
93 # include <float.h>
94 #endif
95 #if defined(HAVE_ALLOCA) && !defined(alloca)
96 # if defined(HAVE_ALLOCA_H)
97 # include <alloca.h>
98 # elif defined(__GNUC__)
99 # define alloca __builtin_alloca
100 # elif defined(_MSC_VER)
101 # include <malloc.h>
102 # define alloca _alloca
103 # elif defined(__WATCOMC__)
104 # include <malloc.h>
105 # elif defined(__BORLANDC__)
106 # include <malloc.h>
107 # elif defined(__DMC__)
108 # include <stdlib.h>
109 # elif defined(__AIX__)
110 #pragma alloca
111 # elif defined(__MRC__)
112 void *alloca(unsigned);
113 # else
114 char *alloca();
115 # endif
116 #endif
117 
118 #ifdef SIZE_MAX
119 # define SDL_SIZE_MAX SIZE_MAX
120 #else
121 # define SDL_SIZE_MAX ((size_t) -1)
122 #endif
123 
124 /**
125  * Check if the compiler supports a given builtin.
126  * Supported by virtually all clang versions and recent gcc. Use this
127  * instead of checking the clang version if possible.
128  */
129 #ifdef __has_builtin
130 #define _SDL_HAS_BUILTIN(x) __has_builtin(x)
131 #else
132 #define _SDL_HAS_BUILTIN(x) 0
133 #endif
134 
135 /**
136  * The number of elements in an array.
137  */
138 #define SDL_arraysize(array) (sizeof(array)/sizeof(array[0]))
139 #define SDL_TABLESIZE(table) SDL_arraysize(table)
140 
141 /**
142  * Macro useful for building other macros with strings in them
143  *
144  * e.g. #define LOG_ERROR(X) OutputDebugString(SDL_STRINGIFY_ARG(__FUNCTION__) ": " X "\n")
145  */
146 #define SDL_STRINGIFY_ARG(arg) #arg
147 
148 /**
149  * \name Cast operators
150  *
151  * Use proper C++ casts when compiled as C++ to be compatible with the option
152  * -Wold-style-cast of GCC (and -Werror=old-style-cast in GCC 4.2 and above).
153  */
154 /* @{ */
155 #ifdef __cplusplus
156 #define SDL_reinterpret_cast(type, expression) reinterpret_cast<type>(expression)
157 #define SDL_static_cast(type, expression) static_cast<type>(expression)
158 #define SDL_const_cast(type, expression) const_cast<type>(expression)
159 #else
160 #define SDL_reinterpret_cast(type, expression) ((type)(expression))
161 #define SDL_static_cast(type, expression) ((type)(expression))
162 #define SDL_const_cast(type, expression) ((type)(expression))
163 #endif
164 /* @} *//* Cast operators */
165 
166 /* Define a four character code as a Uint32 */
167 #define SDL_FOURCC(A, B, C, D) \
168  ((SDL_static_cast(Uint32, SDL_static_cast(Uint8, (A))) << 0) | \
169  (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (B))) << 8) | \
170  (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (C))) << 16) | \
171  (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (D))) << 24))
172 
173 /**
174  * \name Basic data types
175  */
176 /* @{ */
177 
178 #ifdef __CC_ARM
179 /* ARM's compiler throws warnings if we use an enum: like "SDL_bool x = a < b;" */
180 #define SDL_FALSE 0
181 #define SDL_TRUE 1
182 typedef int SDL_bool;
183 #else
184 typedef enum
185 {
187  SDL_TRUE = 1
189 #endif
190 
191 /**
192  * \brief A signed 8-bit integer type.
193  */
194 #define SDL_MAX_SINT8 ((Sint8)0x7F) /* 127 */
195 #define SDL_MIN_SINT8 ((Sint8)(~0x7F)) /* -128 */
196 typedef int8_t Sint8;
197 /**
198  * \brief An unsigned 8-bit integer type.
199  */
200 #define SDL_MAX_UINT8 ((Uint8)0xFF) /* 255 */
201 #define SDL_MIN_UINT8 ((Uint8)0x00) /* 0 */
202 typedef uint8_t Uint8;
203 /**
204  * \brief A signed 16-bit integer type.
205  */
206 #define SDL_MAX_SINT16 ((Sint16)0x7FFF) /* 32767 */
207 #define SDL_MIN_SINT16 ((Sint16)(~0x7FFF)) /* -32768 */
208 typedef int16_t Sint16;
209 /**
210  * \brief An unsigned 16-bit integer type.
211  */
212 #define SDL_MAX_UINT16 ((Uint16)0xFFFF) /* 65535 */
213 #define SDL_MIN_UINT16 ((Uint16)0x0000) /* 0 */
214 typedef uint16_t Uint16;
215 /**
216  * \brief A signed 32-bit integer type.
217  */
218 #define SDL_MAX_SINT32 ((Sint32)0x7FFFFFFF) /* 2147483647 */
219 #define SDL_MIN_SINT32 ((Sint32)(~0x7FFFFFFF)) /* -2147483648 */
220 typedef int32_t Sint32;
221 /**
222  * \brief An unsigned 32-bit integer type.
223  */
224 #define SDL_MAX_UINT32 ((Uint32)0xFFFFFFFFu) /* 4294967295 */
225 #define SDL_MIN_UINT32 ((Uint32)0x00000000) /* 0 */
226 typedef uint32_t Uint32;
227 
228 /**
229  * \brief A signed 64-bit integer type.
230  */
231 #define SDL_MAX_SINT64 ((Sint64)0x7FFFFFFFFFFFFFFFll) /* 9223372036854775807 */
232 #define SDL_MIN_SINT64 ((Sint64)(~0x7FFFFFFFFFFFFFFFll)) /* -9223372036854775808 */
233 typedef int64_t Sint64;
234 /**
235  * \brief An unsigned 64-bit integer type.
236  */
237 #define SDL_MAX_UINT64 ((Uint64)0xFFFFFFFFFFFFFFFFull) /* 18446744073709551615 */
238 #define SDL_MIN_UINT64 ((Uint64)(0x0000000000000000ull)) /* 0 */
239 typedef uint64_t Uint64;
240 
241 /* @} *//* Basic data types */
242 
243 /**
244  * \name Floating-point constants
245  */
246 /* @{ */
247 
248 #ifdef FLT_EPSILON
249 #define SDL_FLT_EPSILON FLT_EPSILON
250 #else
251 #define SDL_FLT_EPSILON 1.1920928955078125e-07F /* 0x0.000002p0 */
252 #endif
253 
254 /* @} *//* Floating-point constants */
255 
256 /* Make sure we have macros for printing width-based integers.
257  * <stdint.h> should define these but this is not true all platforms.
258  * (for example win32) */
259 #ifndef SDL_PRIs64
260 #ifdef PRIs64
261 #define SDL_PRIs64 PRIs64
262 #elif defined(__WIN32__)
263 #define SDL_PRIs64 "I64d"
264 #elif defined(__LINUX__) && defined(__LP64__)
265 #define SDL_PRIs64 "ld"
266 #else
267 #define SDL_PRIs64 "lld"
268 #endif
269 #endif
270 #ifndef SDL_PRIu64
271 #ifdef PRIu64
272 #define SDL_PRIu64 PRIu64
273 #elif defined(__WIN32__)
274 #define SDL_PRIu64 "I64u"
275 #elif defined(__LINUX__) && defined(__LP64__)
276 #define SDL_PRIu64 "lu"
277 #else
278 #define SDL_PRIu64 "llu"
279 #endif
280 #endif
281 #ifndef SDL_PRIx64
282 #ifdef PRIx64
283 #define SDL_PRIx64 PRIx64
284 #elif defined(__WIN32__)
285 #define SDL_PRIx64 "I64x"
286 #elif defined(__LINUX__) && defined(__LP64__)
287 #define SDL_PRIx64 "lx"
288 #else
289 #define SDL_PRIx64 "llx"
290 #endif
291 #endif
292 #ifndef SDL_PRIX64
293 #ifdef PRIX64
294 #define SDL_PRIX64 PRIX64
295 #elif defined(__WIN32__)
296 #define SDL_PRIX64 "I64X"
297 #elif defined(__LINUX__) && defined(__LP64__)
298 #define SDL_PRIX64 "lX"
299 #else
300 #define SDL_PRIX64 "llX"
301 #endif
302 #endif
303 #ifndef SDL_PRIs32
304 #ifdef PRId32
305 #define SDL_PRIs32 PRId32
306 #else
307 #define SDL_PRIs32 "d"
308 #endif
309 #endif
310 #ifndef SDL_PRIu32
311 #ifdef PRIu32
312 #define SDL_PRIu32 PRIu32
313 #else
314 #define SDL_PRIu32 "u"
315 #endif
316 #endif
317 #ifndef SDL_PRIx32
318 #ifdef PRIx32
319 #define SDL_PRIx32 PRIx32
320 #else
321 #define SDL_PRIx32 "x"
322 #endif
323 #endif
324 #ifndef SDL_PRIX32
325 #ifdef PRIX32
326 #define SDL_PRIX32 PRIX32
327 #else
328 #define SDL_PRIX32 "X"
329 #endif
330 #endif
331 
332 /* Annotations to help code analysis tools */
333 #ifdef SDL_DISABLE_ANALYZE_MACROS
334 #define SDL_IN_BYTECAP(x)
335 #define SDL_INOUT_Z_CAP(x)
336 #define SDL_OUT_Z_CAP(x)
337 #define SDL_OUT_CAP(x)
338 #define SDL_OUT_BYTECAP(x)
339 #define SDL_OUT_Z_BYTECAP(x)
340 #define SDL_PRINTF_FORMAT_STRING
341 #define SDL_SCANF_FORMAT_STRING
342 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
343 #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
344 #else
345 #if defined(_MSC_VER) && (_MSC_VER >= 1600) /* VS 2010 and above */
346 #include <sal.h>
347 
348 #define SDL_IN_BYTECAP(x) _In_bytecount_(x)
349 #define SDL_INOUT_Z_CAP(x) _Inout_z_cap_(x)
350 #define SDL_OUT_Z_CAP(x) _Out_z_cap_(x)
351 #define SDL_OUT_CAP(x) _Out_cap_(x)
352 #define SDL_OUT_BYTECAP(x) _Out_bytecap_(x)
353 #define SDL_OUT_Z_BYTECAP(x) _Out_z_bytecap_(x)
354 
355 #define SDL_PRINTF_FORMAT_STRING _Printf_format_string_
356 #define SDL_SCANF_FORMAT_STRING _Scanf_format_string_impl_
357 #else
358 #define SDL_IN_BYTECAP(x)
359 #define SDL_INOUT_Z_CAP(x)
360 #define SDL_OUT_Z_CAP(x)
361 #define SDL_OUT_CAP(x)
362 #define SDL_OUT_BYTECAP(x)
363 #define SDL_OUT_Z_BYTECAP(x)
364 #define SDL_PRINTF_FORMAT_STRING
365 #define SDL_SCANF_FORMAT_STRING
366 #endif
367 #if defined(__GNUC__)
368 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __printf__, fmtargnumber, fmtargnumber+1 )))
369 #define SDL_SCANF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __scanf__, fmtargnumber, fmtargnumber+1 )))
370 #else
371 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
372 #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
373 #endif
374 #endif /* SDL_DISABLE_ANALYZE_MACROS */
375 
376 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
377 #define SDL_COMPILE_TIME_ASSERT(name, x) _Static_assert(x, #x)
378 #elif defined(__cplusplus) && (__cplusplus >= 201103L)
379 #define SDL_COMPILE_TIME_ASSERT(name, x) static_assert(x, #x)
380 #else /* universal, but may trigger -Wunused-local-typedefs */
381 #define SDL_COMPILE_TIME_ASSERT(name, x) \
382  typedef int SDL_compile_time_assert_ ## name[(x) * 2 - 1]
383 #endif
384 /** \cond */
385 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
386 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
387 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
388 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
389 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
390 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
391 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
392 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
393 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
394 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
395 /** \endcond */
396 
397 /* Check to make sure enums are the size of ints, for structure packing.
398  For both Watcom C/C++ and Borland C/C++ the compiler option that makes
399  enums having the size of an int must be enabled.
400  This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
401 */
402 
403 /** \cond */
404 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
405 #if !defined(__ANDROID__) && !defined(__VITA__)
406  /* TODO: include/SDL_stdinc.h:174: error: size of array 'SDL_dummy_enum' is negative */
407 typedef enum
408 {
409  DUMMY_ENUM_VALUE
410 } SDL_DUMMY_ENUM;
411 
412 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
413 #endif
414 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
415 /** \endcond */
416 
417 #include "begin_code.h"
418 /* Set up for C function definitions, even when using C++ */
419 #ifdef __cplusplus
420 extern "C" {
421 #endif
422 
423 #ifdef HAVE_ALLOCA
424 #define SDL_stack_alloc(type, count) (type*)alloca(sizeof(type)*(count))
425 #define SDL_stack_free(data)
426 #else
427 #define SDL_stack_alloc(type, count) (type*)SDL_malloc(sizeof(type)*(count))
428 #define SDL_stack_free(data) SDL_free(data)
429 #endif
430 
431 extern DECLSPEC void *SDLCALL SDL_malloc(size_t size);
432 extern DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size);
433 extern DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size);
434 extern DECLSPEC void SDLCALL SDL_free(void *mem);
435 
436 typedef void *(SDLCALL *SDL_malloc_func)(size_t size);
437 typedef void *(SDLCALL *SDL_calloc_func)(size_t nmemb, size_t size);
438 typedef void *(SDLCALL *SDL_realloc_func)(void *mem, size_t size);
439 typedef void (SDLCALL *SDL_free_func)(void *mem);
440 
441 /**
442  * Get the current set of SDL memory functions
443  *
444  * \since This function is available since SDL 2.0.7.
445  */
446 extern DECLSPEC void SDLCALL SDL_GetMemoryFunctions(SDL_malloc_func *malloc_func,
447  SDL_calloc_func *calloc_func,
448  SDL_realloc_func *realloc_func,
449  SDL_free_func *free_func);
450 
451 /**
452  * Replace SDL's memory allocation functions with a custom set
453  *
454  * \since This function is available since SDL 2.0.7.
455  */
456 extern DECLSPEC int SDLCALL SDL_SetMemoryFunctions(SDL_malloc_func malloc_func,
457  SDL_calloc_func calloc_func,
458  SDL_realloc_func realloc_func,
459  SDL_free_func free_func);
460 
461 /**
462  * Get the number of outstanding (unfreed) allocations
463  *
464  * \since This function is available since SDL 2.0.7.
465  */
466 extern DECLSPEC int SDLCALL SDL_GetNumAllocations(void);
467 
468 extern DECLSPEC char *SDLCALL SDL_getenv(const char *name);
469 extern DECLSPEC int SDLCALL SDL_setenv(const char *name, const char *value, int overwrite);
470 
471 extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size, int (SDLCALL *compare) (const void *, const void *));
472 extern DECLSPEC void * SDLCALL SDL_bsearch(const void *key, const void *base, size_t nmemb, size_t size, int (SDLCALL *compare) (const void *, const void *));
473 
474 extern DECLSPEC int SDLCALL SDL_abs(int x);
475 
476 /* NOTE: these double-evaluate their arguments, so you should never have side effects in the parameters */
477 #define SDL_min(x, y) (((x) < (y)) ? (x) : (y))
478 #define SDL_max(x, y) (((x) > (y)) ? (x) : (y))
479 #define SDL_clamp(x, a, b) (((x) < (a)) ? (a) : (((x) > (b)) ? (b) : (x)))
480 
481 extern DECLSPEC int SDLCALL SDL_isalpha(int x);
482 extern DECLSPEC int SDLCALL SDL_isalnum(int x);
483 extern DECLSPEC int SDLCALL SDL_isblank(int x);
484 extern DECLSPEC int SDLCALL SDL_iscntrl(int x);
485 extern DECLSPEC int SDLCALL SDL_isdigit(int x);
486 extern DECLSPEC int SDLCALL SDL_isxdigit(int x);
487 extern DECLSPEC int SDLCALL SDL_ispunct(int x);
488 extern DECLSPEC int SDLCALL SDL_isspace(int x);
489 extern DECLSPEC int SDLCALL SDL_isupper(int x);
490 extern DECLSPEC int SDLCALL SDL_islower(int x);
491 extern DECLSPEC int SDLCALL SDL_isprint(int x);
492 extern DECLSPEC int SDLCALL SDL_isgraph(int x);
493 extern DECLSPEC int SDLCALL SDL_toupper(int x);
494 extern DECLSPEC int SDLCALL SDL_tolower(int x);
495 
496 extern DECLSPEC Uint32 SDLCALL SDL_crc32(Uint32 crc, const void *data, size_t len);
497 
498 extern DECLSPEC void *SDLCALL SDL_memset(SDL_OUT_BYTECAP(len) void *dst, int c, size_t len);
499 
500 #define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x)))
501 #define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x)))
502 #define SDL_zeroa(x) SDL_memset((x), 0, sizeof((x)))
503 
504 /* Note that memset() is a byte assignment and this is a 32-bit assignment, so they're not directly equivalent. */
505 SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
506 {
507 #ifdef __APPLE__
508  memset_pattern4(dst, &val, dwords * 4);
509 #elif defined(__GNUC__) && defined(__i386__)
510  int u0, u1, u2;
511  __asm__ __volatile__ (
512  "cld \n\t"
513  "rep ; stosl \n\t"
514  : "=&D" (u0), "=&a" (u1), "=&c" (u2)
515  : "0" (dst), "1" (val), "2" (SDL_static_cast(Uint32, dwords))
516  : "memory"
517  );
518 #else
519  size_t _n = (dwords + 3) / 4;
520  Uint32 *_p = SDL_static_cast(Uint32 *, dst);
521  Uint32 _val = (val);
522  if (dwords == 0) {
523  return;
524  }
525  switch (dwords % 4) {
526  case 0: do { *_p++ = _val; SDL_FALLTHROUGH;
527  case 3: *_p++ = _val; SDL_FALLTHROUGH;
528  case 2: *_p++ = _val; SDL_FALLTHROUGH;
529  case 1: *_p++ = _val;
530  } while ( --_n );
531  }
532 #endif
533 }
534 
535 extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
536 
537 extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
538 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
539 
540 extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
541 extern DECLSPEC size_t SDLCALL SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
542 extern DECLSPEC size_t SDLCALL SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
543 extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr);
544 extern DECLSPEC wchar_t *SDLCALL SDL_wcsstr(const wchar_t *haystack, const wchar_t *needle);
545 
546 extern DECLSPEC int SDLCALL SDL_wcscmp(const wchar_t *str1, const wchar_t *str2);
547 extern DECLSPEC int SDLCALL SDL_wcsncmp(const wchar_t *str1, const wchar_t *str2, size_t maxlen);
548 extern DECLSPEC int SDLCALL SDL_wcscasecmp(const wchar_t *str1, const wchar_t *str2);
549 extern DECLSPEC int SDLCALL SDL_wcsncasecmp(const wchar_t *str1, const wchar_t *str2, size_t len);
550 
551 extern DECLSPEC size_t SDLCALL SDL_strlen(const char *str);
552 extern DECLSPEC size_t SDLCALL SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
553 extern DECLSPEC size_t SDLCALL SDL_utf8strlcpy(SDL_OUT_Z_CAP(dst_bytes) char *dst, const char *src, size_t dst_bytes);
554 extern DECLSPEC size_t SDLCALL SDL_strlcat(SDL_INOUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
555 extern DECLSPEC char *SDLCALL SDL_strdup(const char *str);
556 extern DECLSPEC char *SDLCALL SDL_strrev(char *str);
557 extern DECLSPEC char *SDLCALL SDL_strupr(char *str);
558 extern DECLSPEC char *SDLCALL SDL_strlwr(char *str);
559 extern DECLSPEC char *SDLCALL SDL_strchr(const char *str, int c);
560 extern DECLSPEC char *SDLCALL SDL_strrchr(const char *str, int c);
561 extern DECLSPEC char *SDLCALL SDL_strstr(const char *haystack, const char *needle);
562 extern DECLSPEC char *SDLCALL SDL_strtokr(char *s1, const char *s2, char **saveptr);
563 extern DECLSPEC size_t SDLCALL SDL_utf8strlen(const char *str);
564 extern DECLSPEC size_t SDLCALL SDL_utf8strnlen(const char *str, size_t bytes);
565 
566 extern DECLSPEC char *SDLCALL SDL_itoa(int value, char *str, int radix);
567 extern DECLSPEC char *SDLCALL SDL_uitoa(unsigned int value, char *str, int radix);
568 extern DECLSPEC char *SDLCALL SDL_ltoa(long value, char *str, int radix);
569 extern DECLSPEC char *SDLCALL SDL_ultoa(unsigned long value, char *str, int radix);
570 extern DECLSPEC char *SDLCALL SDL_lltoa(Sint64 value, char *str, int radix);
571 extern DECLSPEC char *SDLCALL SDL_ulltoa(Uint64 value, char *str, int radix);
572 
573 extern DECLSPEC int SDLCALL SDL_atoi(const char *str);
574 extern DECLSPEC double SDLCALL SDL_atof(const char *str);
575 extern DECLSPEC long SDLCALL SDL_strtol(const char *str, char **endp, int base);
576 extern DECLSPEC unsigned long SDLCALL SDL_strtoul(const char *str, char **endp, int base);
577 extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *str, char **endp, int base);
578 extern DECLSPEC Uint64 SDLCALL SDL_strtoull(const char *str, char **endp, int base);
579 extern DECLSPEC double SDLCALL SDL_strtod(const char *str, char **endp);
580 
581 extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2);
582 extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2, size_t maxlen);
583 extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1, const char *str2);
584 extern DECLSPEC int SDLCALL SDL_strncasecmp(const char *str1, const char *str2, size_t len);
585 
586 extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, SDL_SCANF_FORMAT_STRING const char *fmt, ...) SDL_SCANF_VARARG_FUNC(2);
587 extern DECLSPEC int SDLCALL SDL_vsscanf(const char *text, const char *fmt, va_list ap);
588 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);
589 extern DECLSPEC int SDLCALL SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, va_list ap);
590 extern DECLSPEC int SDLCALL SDL_asprintf(char **strp, SDL_PRINTF_FORMAT_STRING const char *fmt, ...) SDL_PRINTF_VARARG_FUNC(2);
591 extern DECLSPEC int SDLCALL SDL_vasprintf(char **strp, const char *fmt, va_list ap);
592 
593 #ifndef HAVE_M_PI
594 #ifndef M_PI
595 #define M_PI 3.14159265358979323846264338327950288 /**< pi */
596 #endif
597 #endif
598 
599 /**
600  * Use this function to compute arc cosine of `x`.
601  *
602  * The definition of `y = acos(x)` is `x = cos(y)`.
603  *
604  * Domain: `-1 <= x <= 1`
605  *
606  * Range: `0 <= y <= Pi`
607  *
608  * \param x floating point value, in radians.
609  * \returns arc cosine of `x`.
610  *
611  * \since This function is available since SDL 2.0.2.
612  */
613 extern DECLSPEC double SDLCALL SDL_acos(double x);
614 extern DECLSPEC float SDLCALL SDL_acosf(float x);
615 extern DECLSPEC double SDLCALL SDL_asin(double x);
616 extern DECLSPEC float SDLCALL SDL_asinf(float x);
617 extern DECLSPEC double SDLCALL SDL_atan(double x);
618 extern DECLSPEC float SDLCALL SDL_atanf(float x);
619 extern DECLSPEC double SDLCALL SDL_atan2(double y, double x);
620 extern DECLSPEC float SDLCALL SDL_atan2f(float y, float x);
621 extern DECLSPEC double SDLCALL SDL_ceil(double x);
622 extern DECLSPEC float SDLCALL SDL_ceilf(float x);
623 extern DECLSPEC double SDLCALL SDL_copysign(double x, double y);
624 extern DECLSPEC float SDLCALL SDL_copysignf(float x, float y);
625 extern DECLSPEC double SDLCALL SDL_cos(double x);
626 extern DECLSPEC float SDLCALL SDL_cosf(float x);
627 extern DECLSPEC double SDLCALL SDL_exp(double x);
628 extern DECLSPEC float SDLCALL SDL_expf(float x);
629 extern DECLSPEC double SDLCALL SDL_fabs(double x);
630 extern DECLSPEC float SDLCALL SDL_fabsf(float x);
631 extern DECLSPEC double SDLCALL SDL_floor(double x);
632 extern DECLSPEC float SDLCALL SDL_floorf(float x);
633 extern DECLSPEC double SDLCALL SDL_trunc(double x);
634 extern DECLSPEC float SDLCALL SDL_truncf(float x);
635 extern DECLSPEC double SDLCALL SDL_fmod(double x, double y);
636 extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
637 extern DECLSPEC double SDLCALL SDL_log(double x);
638 extern DECLSPEC float SDLCALL SDL_logf(float x);
639 extern DECLSPEC double SDLCALL SDL_log10(double x);
640 extern DECLSPEC float SDLCALL SDL_log10f(float x);
641 extern DECLSPEC double SDLCALL SDL_pow(double x, double y);
642 extern DECLSPEC float SDLCALL SDL_powf(float x, float y);
643 extern DECLSPEC double SDLCALL SDL_round(double x);
644 extern DECLSPEC float SDLCALL SDL_roundf(float x);
645 extern DECLSPEC long SDLCALL SDL_lround(double x);
646 extern DECLSPEC long SDLCALL SDL_lroundf(float x);
647 extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n);
648 extern DECLSPEC float SDLCALL SDL_scalbnf(float x, int n);
649 extern DECLSPEC double SDLCALL SDL_sin(double x);
650 extern DECLSPEC float SDLCALL SDL_sinf(float x);
651 extern DECLSPEC double SDLCALL SDL_sqrt(double x);
652 extern DECLSPEC float SDLCALL SDL_sqrtf(float x);
653 extern DECLSPEC double SDLCALL SDL_tan(double x);
654 extern DECLSPEC float SDLCALL SDL_tanf(float x);
655 
656 /* The SDL implementation of iconv() returns these error codes */
657 #define SDL_ICONV_ERROR (size_t)-1
658 #define SDL_ICONV_E2BIG (size_t)-2
659 #define SDL_ICONV_EILSEQ (size_t)-3
660 #define SDL_ICONV_EINVAL (size_t)-4
661 
662 /* SDL_iconv_* are now always real symbols/types, not macros or inlined. */
663 typedef struct _SDL_iconv_t *SDL_iconv_t;
664 extern DECLSPEC SDL_iconv_t SDLCALL SDL_iconv_open(const char *tocode,
665  const char *fromcode);
666 extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
667 extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf,
668  size_t * inbytesleft, char **outbuf,
669  size_t * outbytesleft);
670 
671 /**
672  * This function converts a string between encodings in one pass, returning a
673  * string that must be freed with SDL_free() or NULL on error.
674  *
675  * \since This function is available since SDL 2.0.0.
676  */
677 extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode,
678  const char *fromcode,
679  const char *inbuf,
680  size_t inbytesleft);
681 #define SDL_iconv_utf8_locale(S) SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1)
682 #define SDL_iconv_utf8_ucs2(S) (Uint16 *)SDL_iconv_string("UCS-2-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
683 #define SDL_iconv_utf8_ucs4(S) (Uint32 *)SDL_iconv_string("UCS-4-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
684 #define SDL_iconv_wchar_utf8(S) SDL_iconv_string("UTF-8", "WCHAR_T", (char *)S, (SDL_wcslen(S)+1)*sizeof(wchar_t))
685 
686 /* force builds using Clang's static analysis tools to use literal C runtime
687  here, since there are possibly tests that are ineffective otherwise. */
688 #if defined(__clang_analyzer__) && !defined(SDL_DISABLE_ANALYZE_MACROS)
689 
690 /* The analyzer knows about strlcpy even when the system doesn't provide it */
691 #ifndef HAVE_STRLCPY
692 size_t strlcpy(char* dst, const char* src, size_t size);
693 #endif
694 
695 /* The analyzer knows about strlcat even when the system doesn't provide it */
696 #ifndef HAVE_STRLCAT
697 size_t strlcat(char* dst, const char* src, size_t size);
698 #endif
699 
700 #define SDL_malloc malloc
701 #define SDL_calloc calloc
702 #define SDL_realloc realloc
703 #define SDL_free free
704 #define SDL_memset memset
705 #define SDL_memcpy memcpy
706 #define SDL_memmove memmove
707 #define SDL_memcmp memcmp
708 #define SDL_strlcpy strlcpy
709 #define SDL_strlcat strlcat
710 #define SDL_strlen strlen
711 #define SDL_wcslen wcslen
712 #define SDL_wcslcpy wcslcpy
713 #define SDL_wcslcat wcslcat
714 #define SDL_strdup strdup
715 #define SDL_wcsdup wcsdup
716 #define SDL_strchr strchr
717 #define SDL_strrchr strrchr
718 #define SDL_strstr strstr
719 #define SDL_wcsstr wcsstr
720 #define SDL_strtokr strtok_r
721 #define SDL_strcmp strcmp
722 #define SDL_wcscmp wcscmp
723 #define SDL_strncmp strncmp
724 #define SDL_wcsncmp wcsncmp
725 #define SDL_strcasecmp strcasecmp
726 #define SDL_strncasecmp strncasecmp
727 #define SDL_sscanf sscanf
728 #define SDL_vsscanf vsscanf
729 #define SDL_snprintf snprintf
730 #define SDL_vsnprintf vsnprintf
731 #endif
732 
733 SDL_FORCE_INLINE void *SDL_memcpy4(SDL_OUT_BYTECAP(dwords*4) void *dst, SDL_IN_BYTECAP(dwords*4) const void *src, size_t dwords)
734 {
735  return SDL_memcpy(dst, src, dwords * 4);
736 }
737 
738 /**
739  * If a * b would overflow, return -1. Otherwise store a * b via ret
740  * and return 0.
741  *
742  * \since This function is available since SDL 2.24.0.
743  */
745  size_t b,
746  size_t *ret)
747 {
748  if (a != 0 && b > SDL_SIZE_MAX / a) {
749  return -1;
750  }
751  *ret = a * b;
752  return 0;
753 }
754 
755 #if _SDL_HAS_BUILTIN(__builtin_mul_overflow)
756 /* This needs to be wrapped in an inline rather than being a direct #define,
757  * because __builtin_mul_overflow() is type-generic, but we want to be
758  * consistent about interpreting a and b as size_t. */
759 SDL_FORCE_INLINE int _SDL_size_mul_overflow_builtin (size_t a,
760  size_t b,
761  size_t *ret)
762 {
763  return __builtin_mul_overflow(a, b, ret) == 0 ? 0 : -1;
764 }
765 #define SDL_size_mul_overflow(a, b, ret) (_SDL_size_mul_overflow_builtin(a, b, ret))
766 #endif
767 
768 /**
769  * If a + b would overflow, return -1. Otherwise store a + b via ret
770  * and return 0.
771  *
772  * \since This function is available since SDL 2.24.0.
773  */
775  size_t b,
776  size_t *ret)
777 {
778  if (b > SDL_SIZE_MAX - a) {
779  return -1;
780  }
781  *ret = a + b;
782  return 0;
783 }
784 
785 #if _SDL_HAS_BUILTIN(__builtin_add_overflow)
786 /* This needs to be wrapped in an inline rather than being a direct #define,
787  * the same as the call to __builtin_mul_overflow() above. */
788 SDL_FORCE_INLINE int _SDL_size_add_overflow_builtin (size_t a,
789  size_t b,
790  size_t *ret)
791 {
792  return __builtin_add_overflow(a, b, ret) == 0 ? 0 : -1;
793 }
794 #define SDL_size_add_overflow(a, b, ret) (_SDL_size_add_overflow_builtin(a, b, ret))
795 #endif
796 
797 /* Ends C function definitions when using C++ */
798 #ifdef __cplusplus
799 }
800 #endif
801 #include "close_code.h"
802 
803 #endif /* SDL_stdinc_h_ */
804 
805 /* vi: set ts=4 sw=4 expandtab: */
signed short int16_t
unsigned short uint16_t
unsigned int uint32_t
unsigned long long uint64_t
signed int int32_t
unsigned char uint8_t
signed long long int64_t
signed char int8_t
double SDL_sqrt(double x)
int SDL_atoi(const char *str)
SDL_iconv_t SDL_iconv_open(const char *tocode, const char *fromcode)
SDL_FORCE_INLINE void * SDL_memcpy4(SDL_OUT_BYTECAP(dwords *4) void *dst, SDL_IN_BYTECAP(dwords *4) const void *src, size_t dwords)
Definition: SDL_stdinc.h:733
float SDL_tanf(float x)
SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
Definition: SDL_stdinc.h:505
int SDL_isspace(int x)
int SDL_isalnum(int x)
int SDL_tolower(int x)
void * SDL_bsearch(const void *key, const void *base, size_t nmemb, size_t size, int(*compare)(const void *, const void *))
int SDL_abs(int x)
size_t SDL_iconv(SDL_iconv_t cd, const char **inbuf, size_t *inbytesleft, char **outbuf, size_t *outbytesleft)
wchar_t * SDL_wcsdup(const wchar_t *wstr)
double SDL_tan(double x)
uint8_t Uint8
Definition: SDL_stdinc.h:202
int SDL_isxdigit(int x)
void(* SDL_free_func)(void *mem)
Definition: SDL_stdinc.h:439
float SDL_ceilf(float x)
int64_t Sint64
Definition: SDL_stdinc.h:233
#define SDL_OUT_BYTECAP(x)
Definition: SDL_stdinc.h:362
#define SDL_SIZE_MAX
Definition: SDL_stdinc.h:121
int SDL_wcsncmp(const wchar_t *str1, const wchar_t *str2, size_t maxlen)
uint16_t Uint16
Definition: SDL_stdinc.h:214
int SDL_sscanf(const char *text, SDL_SCANF_FORMAT_STRING const char *fmt,...) SDL_SCANF_VARARG_FUNC(2)
void SDL_qsort(void *base, size_t nmemb, size_t size, int(*compare)(const void *, const void *))
int SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, va_list ap)
float SDL_atanf(float x)
int SDL_isprint(int x)
char * SDL_strchr(const char *str, int c)
struct _SDL_iconv_t * SDL_iconv_t
Definition: SDL_stdinc.h:663
int SDL_wcsncasecmp(const wchar_t *str1, const wchar_t *str2, size_t len)
float SDL_copysignf(float x, float y)
void *(* SDL_realloc_func)(void *mem, size_t size)
Definition: SDL_stdinc.h:438
float SDL_acosf(float x)
void * SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len)
int SDL_SetMemoryFunctions(SDL_malloc_func malloc_func, SDL_calloc_func calloc_func, SDL_realloc_func realloc_func, SDL_free_func free_func)
size_t SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen)
char * SDL_getenv(const char *name)
SDL_FORCE_INLINE int SDL_size_mul_overflow(size_t a, size_t b, size_t *ret)
Definition: SDL_stdinc.h:744
int SDL_strncmp(const char *str1, const char *str2, size_t maxlen)
#define SDL_IN_BYTECAP(x)
Definition: SDL_stdinc.h:358
void * SDL_memset(SDL_OUT_BYTECAP(len) void *dst, int c, size_t len)
int SDL_isalpha(int x)
double SDL_round(double x)
long SDL_lround(double x)
int SDL_isdigit(int x)
int SDL_isblank(int x)
int SDL_iconv_close(SDL_iconv_t cd)
char * SDL_strstr(const char *haystack, const char *needle)
char * SDL_ltoa(long value, char *str, int radix)
double SDL_sin(double x)
float SDL_scalbnf(float x, int n)
double SDL_pow(double x, double y)
size_t SDL_utf8strlcpy(SDL_OUT_Z_CAP(dst_bytes) char *dst, const char *src, size_t dst_bytes)
float SDL_asinf(float x)
double SDL_asin(double x)
double SDL_acos(double x)
int8_t Sint8
Definition: SDL_stdinc.h:196
void * SDL_calloc(size_t nmemb, size_t size)
char * SDL_uitoa(unsigned int value, char *str, int radix)
char * SDL_strlwr(char *str)
float SDL_sinf(float x)
double SDL_ceil(double x)
size_t SDL_utf8strnlen(const char *str, size_t bytes)
int SDL_strcasecmp(const char *str1, const char *str2)
#define SDL_SCANF_FORMAT_STRING
Definition: SDL_stdinc.h:365
int SDL_GetNumAllocations(void)
double SDL_exp(double x)
#define SDL_static_cast(type, expression)
Definition: SDL_stdinc.h:161
size_t SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen)
double SDL_atan(double x)
float SDL_sqrtf(float x)
size_t SDL_wcslen(const wchar_t *wstr)
int32_t Sint32
Definition: SDL_stdinc.h:220
int SDL_setenv(const char *name, const char *value, int overwrite)
size_t SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen)
#define SDL_INOUT_Z_CAP(x)
Definition: SDL_stdinc.h:359
double SDL_scalbn(double x, int n)
void *(* SDL_malloc_func)(size_t size)
Definition: SDL_stdinc.h:436
char * SDL_lltoa(Sint64 value, char *str, int radix)
int SDL_wcscasecmp(const wchar_t *str1, const wchar_t *str2)
double SDL_fmod(double x, double y)
double SDL_fabs(double x)
Sint64 SDL_strtoll(const char *str, char **endp, int base)
int SDL_ispunct(int x)
float SDL_truncf(float x)
double SDL_log10(double x)
float SDL_expf(float x)
char * SDL_strtokr(char *s1, const char *s2, char **saveptr)
char * SDL_itoa(int value, char *str, int radix)
double SDL_floor(double x)
int SDL_wcscmp(const wchar_t *str1, const wchar_t *str2)
long SDL_strtol(const char *str, char **endp, int base)
SDL_bool
Definition: SDL_stdinc.h:185
@ SDL_TRUE
Definition: SDL_stdinc.h:187
@ SDL_FALSE
Definition: SDL_stdinc.h:186
Uint32 SDL_crc32(Uint32 crc, const void *data, size_t len)
int SDL_islower(int x)
float SDL_logf(float x)
float SDL_log10f(float x)
int SDL_memcmp(const void *s1, const void *s2, size_t len)
int16_t Sint16
Definition: SDL_stdinc.h:208
float SDL_roundf(float x)
double SDL_strtod(const char *str, char **endp)
char * SDL_strdup(const char *str)
long SDL_lroundf(float x)
double SDL_atof(const char *str)
int SDL_vsscanf(const char *text, const char *fmt, va_list ap)
unsigned long SDL_strtoul(const char *str, char **endp, int base)
char * SDL_iconv_string(const char *tocode, const char *fromcode, const char *inbuf, size_t inbytesleft)
float SDL_floorf(float x)
int SDL_strcmp(const char *str1, const char *str2)
SDL_FORCE_INLINE int SDL_size_add_overflow(size_t a, size_t b, size_t *ret)
Definition: SDL_stdinc.h:774
char * SDL_strupr(char *str)
void * SDL_malloc(size_t size)
double SDL_cos(double x)
wchar_t * SDL_wcsstr(const wchar_t *haystack, const wchar_t *needle)
#define SDL_PRINTF_FORMAT_STRING
Definition: SDL_stdinc.h:364
void * SDL_realloc(void *mem, size_t size)
float SDL_fmodf(float x, float y)
void SDL_GetMemoryFunctions(SDL_malloc_func *malloc_func, SDL_calloc_func *calloc_func, SDL_realloc_func *realloc_func, SDL_free_func *free_func)
#define SDL_PRINTF_VARARG_FUNC(fmtargnumber)
Definition: SDL_stdinc.h:371
#define SDL_COMPILE_TIME_ASSERT(name, x)
Definition: SDL_stdinc.h:381
float SDL_atan2f(float y, float x)
int SDL_isupper(int x)
float SDL_fabsf(float x)
char * SDL_strrev(char *str)
uint64_t Uint64
Definition: SDL_stdinc.h:239
char * SDL_strrchr(const char *str, int c)
int SDL_iscntrl(int x)
void SDL_free(void *mem)
#define SDL_SCANF_VARARG_FUNC(fmtargnumber)
Definition: SDL_stdinc.h:372
double SDL_atan2(double y, double x)
double SDL_log(double x)
char * SDL_ultoa(unsigned long value, char *str, int radix)
int SDL_toupper(int x)
void *(* SDL_calloc_func)(size_t nmemb, size_t size)
Definition: SDL_stdinc.h:437
uint32_t Uint32
Definition: SDL_stdinc.h:226
float SDL_powf(float x, float y)
size_t SDL_strlen(const char *str)
int SDL_snprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, SDL_PRINTF_FORMAT_STRING const char *fmt,...) SDL_PRINTF_VARARG_FUNC(3)
float SDL_cosf(float x)
void * SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len)
size_t SDL_strlcat(SDL_INOUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen)
int SDL_vasprintf(char **strp, const char *fmt, va_list ap)
double SDL_copysign(double x, double y)
size_t SDL_utf8strlen(const char *str)
char * SDL_ulltoa(Uint64 value, char *str, int radix)
int SDL_isgraph(int x)
int SDL_strncasecmp(const char *str1, const char *str2, size_t len)
int SDL_asprintf(char **strp, SDL_PRINTF_FORMAT_STRING const char *fmt,...) SDL_PRINTF_VARARG_FUNC(2)
#define SDL_OUT_Z_CAP(x)
Definition: SDL_stdinc.h:360
Uint64 SDL_strtoull(const char *str, char **endp, int base)
double SDL_trunc(double x)
#define SDL_FALLTHROUGH
Definition: begin_code.h:183
#define SDL_FORCE_INLINE
Definition: begin_code.h:143