1 /*
2   Simple DirectMedia Layer
3   Copyright (C) 1997-2021 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 /**
119  *  The number of elements in an array.
120  */
121 #define SDL_arraysize(array)    (sizeof(array)/sizeof(array[0]))
122 #define SDL_TABLESIZE(table)    SDL_arraysize(table)
123 
124 /**
125  *  Macro useful for building other macros with strings in them
126  *
127  *  e.g. #define LOG_ERROR(X) OutputDebugString(SDL_STRINGIFY_ARG(__FUNCTION__) ": " X "\n")
128  */
129 #define SDL_STRINGIFY_ARG(arg)  #arg
130 
131 /**
132  *  \name Cast operators
133  *
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).
136  */
137 /* @{ */
138 #ifdef __cplusplus
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)
142 #else
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))
146 #endif
147 /* @} *//* Cast operators */
148 
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))
155 
156 /**
157  *  \name Basic data types
158  */
159 /* @{ */
160 
161 #ifdef __CC_ARM
162 /* ARM's compiler throws warnings if we use an enum: like "SDL_bool x = a < b;" */
163 #define SDL_FALSE 0
164 #define SDL_TRUE 1
165 typedef int SDL_bool;
166 #else
167 typedef enum
168 {
169     SDL_FALSE = 0,
170     SDL_TRUE = 1
171 } SDL_bool;
172 #endif
173 
174 /**
175  * \brief A signed 8-bit integer type.
176  */
177 #define SDL_MAX_SINT8   ((Sint8)0x7F)           /* 127 */
178 #define SDL_MIN_SINT8   ((Sint8)(~0x7F))        /* -128 */
179 typedef int8_t Sint8;
180 /**
181  * \brief An unsigned 8-bit integer type.
182  */
183 #define SDL_MAX_UINT8   ((Uint8)0xFF)           /* 255 */
184 #define SDL_MIN_UINT8   ((Uint8)0x00)           /* 0 */
185 typedef uint8_t Uint8;
186 /**
187  * \brief A signed 16-bit integer type.
188  */
189 #define SDL_MAX_SINT16  ((Sint16)0x7FFF)        /* 32767 */
190 #define SDL_MIN_SINT16  ((Sint16)(~0x7FFF))     /* -32768 */
191 typedef int16_t Sint16;
192 /**
193  * \brief An unsigned 16-bit integer type.
194  */
195 #define SDL_MAX_UINT16  ((Uint16)0xFFFF)        /* 65535 */
196 #define SDL_MIN_UINT16  ((Uint16)0x0000)        /* 0 */
197 typedef uint16_t Uint16;
198 /**
199  * \brief A signed 32-bit integer type.
200  */
201 #define SDL_MAX_SINT32  ((Sint32)0x7FFFFFFF)    /* 2147483647 */
202 #define SDL_MIN_SINT32  ((Sint32)(~0x7FFFFFFF)) /* -2147483648 */
203 typedef int32_t Sint32;
204 /**
205  * \brief An unsigned 32-bit integer type.
206  */
207 #define SDL_MAX_UINT32  ((Uint32)0xFFFFFFFFu)   /* 4294967295 */
208 #define SDL_MIN_UINT32  ((Uint32)0x00000000)    /* 0 */
209 typedef uint32_t Uint32;
210 
211 /**
212  * \brief A signed 64-bit integer type.
213  */
214 #define SDL_MAX_SINT64  ((Sint64)0x7FFFFFFFFFFFFFFFll)      /* 9223372036854775807 */
215 #define SDL_MIN_SINT64  ((Sint64)(~0x7FFFFFFFFFFFFFFFll))   /* -9223372036854775808 */
216 typedef int64_t Sint64;
217 /**
218  * \brief An unsigned 64-bit integer type.
219  */
220 #define SDL_MAX_UINT64  ((Uint64)0xFFFFFFFFFFFFFFFFull)     /* 18446744073709551615 */
221 #define SDL_MIN_UINT64  ((Uint64)(0x0000000000000000ull))   /* 0 */
222 typedef uint64_t Uint64;
223 
224 /* @} *//* Basic data types */
225 
226 /* Make sure we have macros for printing width-based integers.
227  * <stdint.h> should define these but this is not true all platforms.
228  * (for example win32) */
229 #ifndef SDL_PRIs64
230 #ifdef PRIs64
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"
236 #else
237 #define SDL_PRIs64 "lld"
238 #endif
239 #endif
240 #ifndef SDL_PRIu64
241 #ifdef PRIu64
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"
247 #else
248 #define SDL_PRIu64 "llu"
249 #endif
250 #endif
251 #ifndef SDL_PRIx64
252 #ifdef PRIx64
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"
258 #else
259 #define SDL_PRIx64 "llx"
260 #endif
261 #endif
262 #ifndef SDL_PRIX64
263 #ifdef PRIX64
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"
269 #else
270 #define SDL_PRIX64 "llX"
271 #endif
272 #endif
273 #ifndef SDL_PRIs32
274 #ifdef PRId32
275 #define SDL_PRIs32 PRId32
276 #else
277 #define SDL_PRIs32 "d"
278 #endif
279 #endif
280 #ifndef SDL_PRIu32
281 #ifdef PRIu32
282 #define SDL_PRIu32 PRIu32
283 #else
284 #define SDL_PRIu32 "u"
285 #endif
286 #endif
287 #ifndef SDL_PRIx32
288 #ifdef PRIx32
289 #define SDL_PRIx32 PRIx32
290 #else
291 #define SDL_PRIx32 "x"
292 #endif
293 #endif
294 #ifndef SDL_PRIX32
295 #ifdef PRIX32
296 #define SDL_PRIX32 PRIX32
297 #else
298 #define SDL_PRIX32 "X"
299 #endif
300 #endif
301 
302 /* Annotations to help code analysis tools */
303 #ifdef SDL_DISABLE_ANALYZE_MACROS
304 #define SDL_IN_BYTECAP(x)
305 #define SDL_INOUT_Z_CAP(x)
306 #define SDL_OUT_Z_CAP(x)
307 #define SDL_OUT_CAP(x)
308 #define SDL_OUT_BYTECAP(x)
309 #define SDL_OUT_Z_BYTECAP(x)
310 #define SDL_PRINTF_FORMAT_STRING
311 #define SDL_SCANF_FORMAT_STRING
312 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
313 #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
314 #else
315 #if defined(_MSC_VER) && (_MSC_VER >= 1600) /* VS 2010 and above */
316 #include <sal.h>
317 
318 #define SDL_IN_BYTECAP(x) _In_bytecount_(x)
319 #define SDL_INOUT_Z_CAP(x) _Inout_z_cap_(x)
320 #define SDL_OUT_Z_CAP(x) _Out_z_cap_(x)
321 #define SDL_OUT_CAP(x) _Out_cap_(x)
322 #define SDL_OUT_BYTECAP(x) _Out_bytecap_(x)
323 #define SDL_OUT_Z_BYTECAP(x) _Out_z_bytecap_(x)
324 
325 #define SDL_PRINTF_FORMAT_STRING _Printf_format_string_
326 #define SDL_SCANF_FORMAT_STRING _Scanf_format_string_impl_
327 #else
328 #define SDL_IN_BYTECAP(x)
329 #define SDL_INOUT_Z_CAP(x)
330 #define SDL_OUT_Z_CAP(x)
331 #define SDL_OUT_CAP(x)
332 #define SDL_OUT_BYTECAP(x)
333 #define SDL_OUT_Z_BYTECAP(x)
334 #define SDL_PRINTF_FORMAT_STRING
335 #define SDL_SCANF_FORMAT_STRING
336 #endif
337 #if defined(__GNUC__)
338 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __printf__, fmtargnumber, fmtargnumber+1 )))
339 #define SDL_SCANF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __scanf__, fmtargnumber, fmtargnumber+1 )))
340 #else
341 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
342 #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
343 #endif
344 #endif /* SDL_DISABLE_ANALYZE_MACROS */
345 
346 #define SDL_COMPILE_TIME_ASSERT(name, x)               \
347        typedef int SDL_compile_time_assert_ ## name[(x) * 2 - 1]
348 /** \cond */
349 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
350 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
351 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
352 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
353 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
354 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
355 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
356 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
357 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
358 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
359 /** \endcond */
360 
361 /* Check to make sure enums are the size of ints, for structure packing.
362    For both Watcom C/C++ and Borland C/C++ the compiler option that makes
363    enums having the size of an int must be enabled.
364    This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
365 */
366 
367 /** \cond */
368 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
369 #if !defined(__ANDROID__) && !defined(__VITA__)
370    /* TODO: include/SDL_stdinc.h:174: error: size of array 'SDL_dummy_enum' is negative */
371 typedef enum
372 {
373     DUMMY_ENUM_VALUE
374 } SDL_DUMMY_ENUM;
375 
376 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
377 #endif
378 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
379 /** \endcond */
380 
381 #include "begin_code.h"
382 /* Set up for C function definitions, even when using C++ */
383 #ifdef __cplusplus
384 extern "C" {
385 #endif
386 
387 #ifdef HAVE_ALLOCA
388 #define SDL_stack_alloc(type, count)    (type*)alloca(sizeof(type)*(count))
389 #define SDL_stack_free(data)
390 #else
391 #define SDL_stack_alloc(type, count)    (type*)SDL_malloc(sizeof(type)*(count))
392 #define SDL_stack_free(data)            SDL_free(data)
393 #endif
394 
395 extern DECLSPEC void *SDLCALL SDL_malloc(size_t size);
396 extern DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size);
397 extern DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size);
398 extern DECLSPEC void SDLCALL SDL_free(void *mem);
399 
400 typedef void *(SDLCALL *SDL_malloc_func)(size_t size);
401 typedef void *(SDLCALL *SDL_calloc_func)(size_t nmemb, size_t size);
402 typedef void *(SDLCALL *SDL_realloc_func)(void *mem, size_t size);
403 typedef void (SDLCALL *SDL_free_func)(void *mem);
404 
405 /**
406  * Get the current set of SDL memory functions
407  */
408 extern DECLSPEC void SDLCALL SDL_GetMemoryFunctions(SDL_malloc_func *malloc_func,
409                                                     SDL_calloc_func *calloc_func,
410                                                     SDL_realloc_func *realloc_func,
411                                                     SDL_free_func *free_func);
412 
413 /**
414  * Replace SDL's memory allocation functions with a custom set
415  */
416 extern DECLSPEC int SDLCALL SDL_SetMemoryFunctions(SDL_malloc_func malloc_func,
417                                                    SDL_calloc_func calloc_func,
418                                                    SDL_realloc_func realloc_func,
419                                                    SDL_free_func free_func);
420 
421 /**
422  * Get the number of outstanding (unfreed) allocations
423  */
424 extern DECLSPEC int SDLCALL SDL_GetNumAllocations(void);
425 
426 extern DECLSPEC char *SDLCALL SDL_getenv(const char *name);
427 extern DECLSPEC int SDLCALL SDL_setenv(const char *name, const char *value, int overwrite);
428 
429 extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size, int (*compare) (const void *, const void *));
430 
431 extern DECLSPEC int SDLCALL SDL_abs(int x);
432 
433 /* !!! FIXME: these have side effects. You probably shouldn't use them. */
434 /* !!! FIXME: Maybe we do forceinline functions of SDL_mini, SDL_minf, etc? */
435 #define SDL_min(x, y) (((x) < (y)) ? (x) : (y))
436 #define SDL_max(x, y) (((x) > (y)) ? (x) : (y))
437 
438 extern DECLSPEC int SDLCALL SDL_isalpha(int x);
439 extern DECLSPEC int SDLCALL SDL_isalnum(int x);
440 extern DECLSPEC int SDLCALL SDL_isblank(int x);
441 extern DECLSPEC int SDLCALL SDL_iscntrl(int x);
442 extern DECLSPEC int SDLCALL SDL_isdigit(int x);
443 extern DECLSPEC int SDLCALL SDL_isxdigit(int x);
444 extern DECLSPEC int SDLCALL SDL_ispunct(int x);
445 extern DECLSPEC int SDLCALL SDL_isspace(int x);
446 extern DECLSPEC int SDLCALL SDL_isupper(int x);
447 extern DECLSPEC int SDLCALL SDL_islower(int x);
448 extern DECLSPEC int SDLCALL SDL_isprint(int x);
449 extern DECLSPEC int SDLCALL SDL_isgraph(int x);
450 extern DECLSPEC int SDLCALL SDL_toupper(int x);
451 extern DECLSPEC int SDLCALL SDL_tolower(int x);
452 
453 extern DECLSPEC Uint32 SDLCALL SDL_crc32(Uint32 crc, const void *data, size_t len);
454 
455 extern DECLSPEC void *SDLCALL SDL_memset(SDL_OUT_BYTECAP(len) void *dst, int c, size_t len);
456 
457 #define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x)))
458 #define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x)))
459 #define SDL_zeroa(x) SDL_memset((x), 0, sizeof((x)))
460 
461 /* Note that memset() is a byte assignment and this is a 32-bit assignment, so they're not directly equivalent. */
SDL_memset4(void * dst,Uint32 val,size_t dwords)462 SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
463 {
464 #ifdef __APPLE__
465     memset_pattern4(dst, &val, dwords * 4);
466 #elif defined(__GNUC__) && defined(__i386__)
467     int u0, u1, u2;
468     __asm__ __volatile__ (
469         "cld \n\t"
470         "rep ; stosl \n\t"
471         : "=&D" (u0), "=&a" (u1), "=&c" (u2)
472         : "0" (dst), "1" (val), "2" (SDL_static_cast(Uint32, dwords))
473         : "memory"
474     );
475 #else
476     size_t _n = (dwords + 3) / 4;
477     Uint32 *_p = SDL_static_cast(Uint32 *, dst);
478     Uint32 _val = (val);
479     if (dwords == 0) {
480         return;
481     }
482 
483     /* !!! FIXME: there are better ways to do this, but this is just to clean this up for now. */
484     #ifdef __clang__
485     #pragma clang diagnostic push
486     #pragma clang diagnostic ignored "-Wimplicit-fallthrough"
487     #endif
488 
489     switch (dwords % 4) {
490         case 0: do {    *_p++ = _val;   /* fallthrough */
491         case 3:         *_p++ = _val;   /* fallthrough */
492         case 2:         *_p++ = _val;   /* fallthrough */
493         case 1:         *_p++ = _val;   /* fallthrough */
494         } while ( --_n );
495     }
496 
497     #ifdef __clang__
498     #pragma clang diagnostic pop
499     #endif
500 
501 #endif
502 }
503 
504 extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
505 
506 extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
507 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
508 
509 extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
510 extern DECLSPEC size_t SDLCALL SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
511 extern DECLSPEC size_t SDLCALL SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
512 extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr);
513 extern DECLSPEC wchar_t *SDLCALL SDL_wcsstr(const wchar_t *haystack, const wchar_t *needle);
514 
515 extern DECLSPEC int SDLCALL SDL_wcscmp(const wchar_t *str1, const wchar_t *str2);
516 extern DECLSPEC int SDLCALL SDL_wcsncmp(const wchar_t *str1, const wchar_t *str2, size_t maxlen);
517 extern DECLSPEC int SDLCALL SDL_wcscasecmp(const wchar_t *str1, const wchar_t *str2);
518 extern DECLSPEC int SDLCALL SDL_wcsncasecmp(const wchar_t *str1, const wchar_t *str2, size_t len);
519 
520 extern DECLSPEC size_t SDLCALL SDL_strlen(const char *str);
521 extern DECLSPEC size_t SDLCALL SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
522 extern DECLSPEC size_t SDLCALL SDL_utf8strlcpy(SDL_OUT_Z_CAP(dst_bytes) char *dst, const char *src, size_t dst_bytes);
523 extern DECLSPEC size_t SDLCALL SDL_strlcat(SDL_INOUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
524 extern DECLSPEC char *SDLCALL SDL_strdup(const char *str);
525 extern DECLSPEC char *SDLCALL SDL_strrev(char *str);
526 extern DECLSPEC char *SDLCALL SDL_strupr(char *str);
527 extern DECLSPEC char *SDLCALL SDL_strlwr(char *str);
528 extern DECLSPEC char *SDLCALL SDL_strchr(const char *str, int c);
529 extern DECLSPEC char *SDLCALL SDL_strrchr(const char *str, int c);
530 extern DECLSPEC char *SDLCALL SDL_strstr(const char *haystack, const char *needle);
531 extern DECLSPEC char *SDLCALL SDL_strtokr(char *s1, const char *s2, char **saveptr);
532 extern DECLSPEC size_t SDLCALL SDL_utf8strlen(const char *str);
533 
534 extern DECLSPEC char *SDLCALL SDL_itoa(int value, char *str, int radix);
535 extern DECLSPEC char *SDLCALL SDL_uitoa(unsigned int value, char *str, int radix);
536 extern DECLSPEC char *SDLCALL SDL_ltoa(long value, char *str, int radix);
537 extern DECLSPEC char *SDLCALL SDL_ultoa(unsigned long value, char *str, int radix);
538 extern DECLSPEC char *SDLCALL SDL_lltoa(Sint64 value, char *str, int radix);
539 extern DECLSPEC char *SDLCALL SDL_ulltoa(Uint64 value, char *str, int radix);
540 
541 extern DECLSPEC int SDLCALL SDL_atoi(const char *str);
542 extern DECLSPEC double SDLCALL SDL_atof(const char *str);
543 extern DECLSPEC long SDLCALL SDL_strtol(const char *str, char **endp, int base);
544 extern DECLSPEC unsigned long SDLCALL SDL_strtoul(const char *str, char **endp, int base);
545 extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *str, char **endp, int base);
546 extern DECLSPEC Uint64 SDLCALL SDL_strtoull(const char *str, char **endp, int base);
547 extern DECLSPEC double SDLCALL SDL_strtod(const char *str, char **endp);
548 
549 extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2);
550 extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2, size_t maxlen);
551 extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1, const char *str2);
552 extern DECLSPEC int SDLCALL SDL_strncasecmp(const char *str1, const char *str2, size_t len);
553 
554 extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, SDL_SCANF_FORMAT_STRING const char *fmt, ...) SDL_SCANF_VARARG_FUNC(2);
555 extern DECLSPEC int SDLCALL SDL_vsscanf(const char *text, const char *fmt, va_list ap);
556 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);
557 extern DECLSPEC int SDLCALL SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, va_list ap);
558 
559 #ifndef HAVE_M_PI
560 #ifndef M_PI
561 #define M_PI    3.14159265358979323846264338327950288   /**< pi */
562 #endif
563 #endif
564 
565 extern DECLSPEC double SDLCALL SDL_acos(double x);
566 extern DECLSPEC float SDLCALL SDL_acosf(float x);
567 extern DECLSPEC double SDLCALL SDL_asin(double x);
568 extern DECLSPEC float SDLCALL SDL_asinf(float x);
569 extern DECLSPEC double SDLCALL SDL_atan(double x);
570 extern DECLSPEC float SDLCALL SDL_atanf(float x);
571 extern DECLSPEC double SDLCALL SDL_atan2(double x, double y);
572 extern DECLSPEC float SDLCALL SDL_atan2f(float x, float y);
573 extern DECLSPEC double SDLCALL SDL_ceil(double x);
574 extern DECLSPEC float SDLCALL SDL_ceilf(float x);
575 extern DECLSPEC double SDLCALL SDL_copysign(double x, double y);
576 extern DECLSPEC float SDLCALL SDL_copysignf(float x, float y);
577 extern DECLSPEC double SDLCALL SDL_cos(double x);
578 extern DECLSPEC float SDLCALL SDL_cosf(float x);
579 extern DECLSPEC double SDLCALL SDL_exp(double x);
580 extern DECLSPEC float SDLCALL SDL_expf(float x);
581 extern DECLSPEC double SDLCALL SDL_fabs(double x);
582 extern DECLSPEC float SDLCALL SDL_fabsf(float x);
583 extern DECLSPEC double SDLCALL SDL_floor(double x);
584 extern DECLSPEC float SDLCALL SDL_floorf(float x);
585 extern DECLSPEC double SDLCALL SDL_trunc(double x);
586 extern DECLSPEC float SDLCALL SDL_truncf(float x);
587 extern DECLSPEC double SDLCALL SDL_fmod(double x, double y);
588 extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
589 extern DECLSPEC double SDLCALL SDL_log(double x);
590 extern DECLSPEC float SDLCALL SDL_logf(float x);
591 extern DECLSPEC double SDLCALL SDL_log10(double x);
592 extern DECLSPEC float SDLCALL SDL_log10f(float x);
593 extern DECLSPEC double SDLCALL SDL_pow(double x, double y);
594 extern DECLSPEC float SDLCALL SDL_powf(float x, float y);
595 extern DECLSPEC double SDLCALL SDL_round(double x);
596 extern DECLSPEC float SDLCALL SDL_roundf(float x);
597 extern DECLSPEC long SDLCALL SDL_lround(double x);
598 extern DECLSPEC long SDLCALL SDL_lroundf(float x);
599 extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n);
600 extern DECLSPEC float SDLCALL SDL_scalbnf(float x, int n);
601 extern DECLSPEC double SDLCALL SDL_sin(double x);
602 extern DECLSPEC float SDLCALL SDL_sinf(float x);
603 extern DECLSPEC double SDLCALL SDL_sqrt(double x);
604 extern DECLSPEC float SDLCALL SDL_sqrtf(float x);
605 extern DECLSPEC double SDLCALL SDL_tan(double x);
606 extern DECLSPEC float SDLCALL SDL_tanf(float x);
607 
608 /* The SDL implementation of iconv() returns these error codes */
609 #define SDL_ICONV_ERROR     (size_t)-1
610 #define SDL_ICONV_E2BIG     (size_t)-2
611 #define SDL_ICONV_EILSEQ    (size_t)-3
612 #define SDL_ICONV_EINVAL    (size_t)-4
613 
614 /* SDL_iconv_* are now always real symbols/types, not macros or inlined. */
615 typedef struct _SDL_iconv_t *SDL_iconv_t;
616 extern DECLSPEC SDL_iconv_t SDLCALL SDL_iconv_open(const char *tocode,
617                                                    const char *fromcode);
618 extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
619 extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf,
620                                          size_t * inbytesleft, char **outbuf,
621                                          size_t * outbytesleft);
622 /**
623  * This function converts a string between encodings in one pass, returning a
624  * string that must be freed with SDL_free() or NULL on error.
625  */
626 extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode,
627                                                const char *fromcode,
628                                                const char *inbuf,
629                                                size_t inbytesleft);
630 #define SDL_iconv_utf8_locale(S)    SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1)
631 #define SDL_iconv_utf8_ucs2(S)      (Uint16 *)SDL_iconv_string("UCS-2-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
632 #define SDL_iconv_utf8_ucs4(S)      (Uint32 *)SDL_iconv_string("UCS-4-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
633 
634 /* force builds using Clang's static analysis tools to use literal C runtime
635    here, since there are possibly tests that are ineffective otherwise. */
636 #if defined(__clang_analyzer__) && !defined(SDL_DISABLE_ANALYZE_MACROS)
637 
638 /* The analyzer knows about strlcpy even when the system doesn't provide it */
639 #ifndef HAVE_STRLCPY
640 size_t strlcpy(char* dst, const char* src, size_t size);
641 #endif
642 
643 /* The analyzer knows about strlcat even when the system doesn't provide it */
644 #ifndef HAVE_STRLCAT
645 size_t strlcat(char* dst, const char* src, size_t size);
646 #endif
647 
648 #define SDL_malloc malloc
649 #define SDL_calloc calloc
650 #define SDL_realloc realloc
651 #define SDL_free free
652 #define SDL_memset memset
653 #define SDL_memcpy memcpy
654 #define SDL_memmove memmove
655 #define SDL_memcmp memcmp
656 #define SDL_strlcpy strlcpy
657 #define SDL_strlcat strlcat
658 #define SDL_strlen strlen
659 #define SDL_wcslen wcslen
660 #define SDL_wcslcpy wcslcpy
661 #define SDL_wcslcat wcslcat
662 #define SDL_strdup strdup
663 #define SDL_wcsdup wcsdup
664 #define SDL_strchr strchr
665 #define SDL_strrchr strrchr
666 #define SDL_strstr strstr
667 #define SDL_wcsstr wcsstr
668 #define SDL_strtokr strtok_r
669 #define SDL_strcmp strcmp
670 #define SDL_wcscmp wcscmp
671 #define SDL_strncmp strncmp
672 #define SDL_wcsncmp wcsncmp
673 #define SDL_strcasecmp strcasecmp
674 #define SDL_strncasecmp strncasecmp
675 #define SDL_sscanf sscanf
676 #define SDL_vsscanf vsscanf
677 #define SDL_snprintf snprintf
678 #define SDL_vsnprintf vsnprintf
679 #endif
680 
681 SDL_FORCE_INLINE void *SDL_memcpy4(SDL_OUT_BYTECAP(dwords*4) void *dst, SDL_IN_BYTECAP(dwords*4) const void *src, size_t dwords)
682 {
683     return SDL_memcpy(dst, src, dwords * 4);
684 }
685 
686 /* Ends C function definitions when using C++ */
687 #ifdef __cplusplus
688 }
689 #endif
690 #include "close_code.h"
691 
692 #endif /* SDL_stdinc_h_ */
693 
694 /* vi: set ts=4 sw=4 expandtab: */
695