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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 
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 
93 #define SDL_arraysize(array) (sizeof(array)/sizeof(array[0]))
94 #define SDL_TABLESIZE(table) SDL_arraysize(table)
95 
101 #define SDL_STRINGIFY_ARG(arg) #arg
102 
109 /* @{ */
110 #ifdef __cplusplus
111 #define SDL_reinterpret_cast(type, expression) reinterpret_cast<type>(expression)
112 #define SDL_static_cast(type, expression) static_cast<type>(expression)
113 #define SDL_const_cast(type, expression) const_cast<type>(expression)
114 #else
115 #define SDL_reinterpret_cast(type, expression) ((type)(expression))
116 #define SDL_static_cast(type, expression) ((type)(expression))
117 #define SDL_const_cast(type, expression) ((type)(expression))
118 #endif
119 /* @} *//* Cast operators */
120 
121 /* Define a four character code as a Uint32 */
122 #define SDL_FOURCC(A, B, C, D) \
123  ((SDL_static_cast(Uint32, SDL_static_cast(Uint8, (A))) << 0) | \
124  (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (B))) << 8) | \
125  (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (C))) << 16) | \
126  (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (D))) << 24))
127 
131 /* @{ */
132 
133 #ifdef __CC_ARM
134 /* ARM's compiler throws warnings if we use an enum: like "SDL_bool x = a < b;" */
135 #define SDL_FALSE 0
136 #define SDL_TRUE 1
137 typedef int SDL_bool;
138 #else
139 typedef enum
140 {
141  SDL_FALSE = 0,
142  SDL_TRUE = 1
143 } SDL_bool;
144 #endif
145 
149 #define SDL_MAX_SINT8 ((Sint8)0x7F) /* 127 */
150 #define SDL_MIN_SINT8 ((Sint8)(~0x7F)) /* -128 */
151 typedef int8_t Sint8;
155 #define SDL_MAX_UINT8 ((Uint8)0xFF) /* 255 */
156 #define SDL_MIN_UINT8 ((Uint8)0x00) /* 0 */
157 typedef uint8_t Uint8;
161 #define SDL_MAX_SINT16 ((Sint16)0x7FFF) /* 32767 */
162 #define SDL_MIN_SINT16 ((Sint16)(~0x7FFF)) /* -32768 */
163 typedef int16_t Sint16;
167 #define SDL_MAX_UINT16 ((Uint16)0xFFFF) /* 65535 */
168 #define SDL_MIN_UINT16 ((Uint16)0x0000) /* 0 */
169 typedef uint16_t Uint16;
173 #define SDL_MAX_SINT32 ((Sint32)0x7FFFFFFF) /* 2147483647 */
174 #define SDL_MIN_SINT32 ((Sint32)(~0x7FFFFFFF)) /* -2147483648 */
175 typedef int32_t Sint32;
179 #define SDL_MAX_UINT32 ((Uint32)0xFFFFFFFFu) /* 4294967295 */
180 #define SDL_MIN_UINT32 ((Uint32)0x00000000) /* 0 */
181 typedef uint32_t Uint32;
182 
186 #define SDL_MAX_SINT64 ((Sint64)0x7FFFFFFFFFFFFFFFll) /* 9223372036854775807 */
187 #define SDL_MIN_SINT64 ((Sint64)(~0x7FFFFFFFFFFFFFFFll)) /* -9223372036854775808 */
188 typedef int64_t Sint64;
192 #define SDL_MAX_UINT64 ((Uint64)0xFFFFFFFFFFFFFFFFull) /* 18446744073709551615 */
193 #define SDL_MIN_UINT64 ((Uint64)(0x0000000000000000ull)) /* 0 */
194 typedef uint64_t Uint64;
195 
196 /* @} *//* Basic data types */
197 
198 /* Make sure we have macros for printing 64 bit values.
199  * <stdint.h> should define these but this is not true all platforms.
200  * (for example win32) */
201 #ifndef SDL_PRIs64
202 #ifdef PRIs64
203 #define SDL_PRIs64 PRIs64
204 #elif defined(__WIN32__)
205 #define SDL_PRIs64 "I64d"
206 #elif defined(__LINUX__) && defined(__LP64__)
207 #define SDL_PRIs64 "ld"
208 #else
209 #define SDL_PRIs64 "lld"
210 #endif
211 #endif
212 #ifndef SDL_PRIu64
213 #ifdef PRIu64
214 #define SDL_PRIu64 PRIu64
215 #elif defined(__WIN32__)
216 #define SDL_PRIu64 "I64u"
217 #elif defined(__LINUX__) && defined(__LP64__)
218 #define SDL_PRIu64 "lu"
219 #else
220 #define SDL_PRIu64 "llu"
221 #endif
222 #endif
223 #ifndef SDL_PRIx64
224 #ifdef PRIx64
225 #define SDL_PRIx64 PRIx64
226 #elif defined(__WIN32__)
227 #define SDL_PRIx64 "I64x"
228 #elif defined(__LINUX__) && defined(__LP64__)
229 #define SDL_PRIx64 "lx"
230 #else
231 #define SDL_PRIx64 "llx"
232 #endif
233 #endif
234 #ifndef SDL_PRIX64
235 #ifdef PRIX64
236 #define SDL_PRIX64 PRIX64
237 #elif defined(__WIN32__)
238 #define SDL_PRIX64 "I64X"
239 #elif defined(__LINUX__) && defined(__LP64__)
240 #define SDL_PRIX64 "lX"
241 #else
242 #define SDL_PRIX64 "llX"
243 #endif
244 #endif
245 
246 /* Annotations to help code analysis tools */
247 #ifdef SDL_DISABLE_ANALYZE_MACROS
248 #define SDL_IN_BYTECAP(x)
249 #define SDL_INOUT_Z_CAP(x)
250 #define SDL_OUT_Z_CAP(x)
251 #define SDL_OUT_CAP(x)
252 #define SDL_OUT_BYTECAP(x)
253 #define SDL_OUT_Z_BYTECAP(x)
254 #define SDL_PRINTF_FORMAT_STRING
255 #define SDL_SCANF_FORMAT_STRING
256 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
257 #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
258 #else
259 #if defined(_MSC_VER) && (_MSC_VER >= 1600) /* VS 2010 and above */
260 #include <sal.h>
261 
262 #define SDL_IN_BYTECAP(x) _In_bytecount_(x)
263 #define SDL_INOUT_Z_CAP(x) _Inout_z_cap_(x)
264 #define SDL_OUT_Z_CAP(x) _Out_z_cap_(x)
265 #define SDL_OUT_CAP(x) _Out_cap_(x)
266 #define SDL_OUT_BYTECAP(x) _Out_bytecap_(x)
267 #define SDL_OUT_Z_BYTECAP(x) _Out_z_bytecap_(x)
268 
269 #define SDL_PRINTF_FORMAT_STRING _Printf_format_string_
270 #define SDL_SCANF_FORMAT_STRING _Scanf_format_string_impl_
271 #else
272 #define SDL_IN_BYTECAP(x)
273 #define SDL_INOUT_Z_CAP(x)
274 #define SDL_OUT_Z_CAP(x)
275 #define SDL_OUT_CAP(x)
276 #define SDL_OUT_BYTECAP(x)
277 #define SDL_OUT_Z_BYTECAP(x)
278 #define SDL_PRINTF_FORMAT_STRING
279 #define SDL_SCANF_FORMAT_STRING
280 #endif
281 #if defined(__GNUC__)
282 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __printf__, fmtargnumber, fmtargnumber+1 )))
283 #define SDL_SCANF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __scanf__, fmtargnumber, fmtargnumber+1 )))
284 #else
285 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
286 #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
287 #endif
288 #endif /* SDL_DISABLE_ANALYZE_MACROS */
289 
290 #define SDL_COMPILE_TIME_ASSERT(name, x) \
291  typedef int SDL_compile_time_assert_ ## name[(x) * 2 - 1]
292 
293 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
294 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
295 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
296 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
297 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
298 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
299 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
300 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
301 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
302 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
303 
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 
312 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
313 #if !defined(__ANDROID__)
314  /* TODO: include/SDL_stdinc.h:174: error: size of array 'SDL_dummy_enum' is negative */
315 typedef enum
316 {
317  DUMMY_ENUM_VALUE
318 } SDL_DUMMY_ENUM;
319 
320 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
321 #endif
322 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
323 
325 #include "begin_code.h"
326 /* Set up for C function definitions, even when using C++ */
327 #ifdef __cplusplus
328 extern "C" {
329 #endif
330 
331 #if defined(HAVE_ALLOCA) && !defined(alloca)
332 # if defined(HAVE_ALLOCA_H)
333 # include <alloca.h>
334 # elif defined(__GNUC__)
335 # define alloca __builtin_alloca
336 # elif defined(_MSC_VER)
337 # include <malloc.h>
338 # define alloca _alloca
339 # elif defined(__WATCOMC__)
340 # include <malloc.h>
341 # elif defined(__BORLANDC__)
342 # include <malloc.h>
343 # elif defined(__DMC__)
344 # include <stdlib.h>
345 # elif defined(__AIX__)
346 #pragma alloca
347 # elif defined(__MRC__)
348 void *alloca(unsigned);
349 # else
350 char *alloca();
351 # endif
352 #endif
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 
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 
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 
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 
449 extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
450 
451 extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
452 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
453 
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
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_fabs(double x);
518 extern DECLSPEC float SDLCALL SDL_fabsf(float x);
519 extern DECLSPEC double SDLCALL SDL_floor(double x);
520 extern DECLSPEC float SDLCALL SDL_floorf(float x);
521 extern DECLSPEC double SDLCALL SDL_fmod(double x, double y);
522 extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
523 extern DECLSPEC double SDLCALL SDL_log(double x);
524 extern DECLSPEC float SDLCALL SDL_logf(float x);
525 extern DECLSPEC double SDLCALL SDL_log10(double x);
526 extern DECLSPEC float SDLCALL SDL_log10f(float x);
527 extern DECLSPEC double SDLCALL SDL_pow(double x, double y);
528 extern DECLSPEC float SDLCALL SDL_powf(float x, float y);
529 extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n);
530 extern DECLSPEC float SDLCALL SDL_scalbnf(float x, int n);
531 extern DECLSPEC double SDLCALL SDL_sin(double x);
532 extern DECLSPEC float SDLCALL SDL_sinf(float x);
533 extern DECLSPEC double SDLCALL SDL_sqrt(double x);
534 extern DECLSPEC float SDLCALL SDL_sqrtf(float x);
535 extern DECLSPEC double SDLCALL SDL_tan(double x);
536 extern DECLSPEC float SDLCALL SDL_tanf(float x);
537 
538 /* The SDL implementation of iconv() returns these error codes */
539 #define SDL_ICONV_ERROR (size_t)-1
540 #define SDL_ICONV_E2BIG (size_t)-2
541 #define SDL_ICONV_EILSEQ (size_t)-3
542 #define SDL_ICONV_EINVAL (size_t)-4
543 
544 /* SDL_iconv_* are now always real symbols/types, not macros or inlined. */
545 typedef struct _SDL_iconv_t *SDL_iconv_t;
546 extern DECLSPEC SDL_iconv_t SDLCALL SDL_iconv_open(const char *tocode,
547  const char *fromcode);
548 extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
549 extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf,
550  size_t * inbytesleft, char **outbuf,
551  size_t * outbytesleft);
556 extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode,
557  const char *fromcode,
558  const char *inbuf,
559  size_t inbytesleft);
560 #define SDL_iconv_utf8_locale(S) SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1)
561 #define SDL_iconv_utf8_ucs2(S) (Uint16 *)SDL_iconv_string("UCS-2-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
562 #define SDL_iconv_utf8_ucs4(S) (Uint32 *)SDL_iconv_string("UCS-4-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
563 
564 /* force builds using Clang's static analysis tools to use literal C runtime
565  here, since there are possibly tests that are ineffective otherwise. */
566 #if defined(__clang_analyzer__) && !defined(SDL_DISABLE_ANALYZE_MACROS)
567 #define SDL_malloc malloc
568 #define SDL_calloc calloc
569 #define SDL_realloc realloc
570 #define SDL_free free
571 #define SDL_memset memset
572 #define SDL_memcpy memcpy
573 #define SDL_memmove memmove
574 #define SDL_memcmp memcmp
575 #define SDL_strlen strlen
576 #define SDL_strlcpy strlcpy
577 #define SDL_strlcat strlcat
578 #define SDL_strdup strdup
579 #define SDL_strchr strchr
580 #define SDL_strrchr strrchr
581 #define SDL_strstr strstr
582 #define SDL_strcmp strcmp
583 #define SDL_strncmp strncmp
584 #define SDL_strcasecmp strcasecmp
585 #define SDL_strncasecmp strncasecmp
586 #define SDL_sscanf sscanf
587 #define SDL_vsscanf vsscanf
588 #define SDL_snprintf snprintf
589 #define SDL_vsnprintf vsnprintf
590 #endif
591 
592 SDL_FORCE_INLINE void *SDL_memcpy4(SDL_OUT_BYTECAP(dwords*4) void *dst, SDL_IN_BYTECAP(dwords*4) const void *src, size_t dwords)
593 {
594  return SDL_memcpy(dst, src, dwords * 4);
595 }
596 
597 /* Ends C function definitions when using C++ */
598 #ifdef __cplusplus
599 }
600 #endif
601 #include "close_code.h"
602 
603 #endif /* SDL_stdinc_h_ */
604 
605 /* vi: set ts=4 sw=4 expandtab: */
DECLSPEC int SDLCALL SDL_GetNumAllocations(void)
Get the number of outstanding (unfreed) allocations.
DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode, const char *fromcode, const char *inbuf, size_t inbytesleft)
DECLSPEC void SDLCALL SDL_GetMemoryFunctions(SDL_malloc_func *malloc_func, SDL_calloc_func *calloc_func, SDL_realloc_func *realloc_func, SDL_free_func *free_func)
Get the current set of SDL memory functions.
DECLSPEC int SDLCALL SDL_SetMemoryFunctions(SDL_malloc_func malloc_func, SDL_calloc_func calloc_func, SDL_realloc_func realloc_func, SDL_free_func free_func)
Replace SDL&#39;s memory allocation functions with a custom set.