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__)
112void *alloca(unsigned);
113# else
114char *alloca();
115# endif
116#endif
117
118/**
119 * Check if the compiler supports a given builtin.
120 * Supported by virtually all clang versions and recent gcc. Use this
121 * instead of checking the clang version if possible.
122 */
123#ifdef __has_builtin
124#define _SDL_HAS_BUILTIN(x) __has_builtin(x)
125#else
126#define _SDL_HAS_BUILTIN(x) 0
127#endif
128
129/**
130 * The number of elements in an array.
131 */
132#define SDL_arraysize(array) (sizeof(array)/sizeof(array[0]))
133#define SDL_TABLESIZE(table) SDL_arraysize(table)
134
135/**
136 * Macro useful for building other macros with strings in them
137 *
138 * e.g. #define LOG_ERROR(X) OutputDebugString(SDL_STRINGIFY_ARG(__FUNCTION__) ": " X "\n")
139 */
140#define SDL_STRINGIFY_ARG(arg) #arg
141
142/**
143 * \name Cast operators
144 *
145 * Use proper C++ casts when compiled as C++ to be compatible with the option
146 * -Wold-style-cast of GCC (and -Werror=old-style-cast in GCC 4.2 and above).
147 */
148/* @{ */
149#ifdef __cplusplus
150#define SDL_reinterpret_cast(type, expression) reinterpret_cast<type>(expression)
151#define SDL_static_cast(type, expression) static_cast<type>(expression)
152#define SDL_const_cast(type, expression) const_cast<type>(expression)
153#else
154#define SDL_reinterpret_cast(type, expression) ((type)(expression))
155#define SDL_static_cast(type, expression) ((type)(expression))
156#define SDL_const_cast(type, expression) ((type)(expression))
157#endif
158/* @} *//* Cast operators */
159
160/* Define a four character code as a Uint32 */
161#define SDL_FOURCC(A, B, C, D) \
162 ((SDL_static_cast(Uint32, SDL_static_cast(Uint8, (A))) << 0) | \
163 (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (B))) << 8) | \
164 (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (C))) << 16) | \
165 (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (D))) << 24))
166
167/**
168 * \name Basic data types
169 */
170/* @{ */
171
172#ifdef __CC_ARM
173/* ARM's compiler throws warnings if we use an enum: like "SDL_bool x = a < b;" */
174#define SDL_FALSE 0
175#define SDL_TRUE 1
176typedef int SDL_bool;
177#else
178typedef enum
179{
180 SDL_FALSE = 0,
181 SDL_TRUE = 1
182} SDL_bool;
183#endif
184
185/**
186 * \brief A signed 8-bit integer type.
187 */
188#define SDL_MAX_SINT8 ((Sint8)0x7F) /* 127 */
189#define SDL_MIN_SINT8 ((Sint8)(~0x7F)) /* -128 */
190typedef int8_t Sint8;
191/**
192 * \brief An unsigned 8-bit integer type.
193 */
194#define SDL_MAX_UINT8 ((Uint8)0xFF) /* 255 */
195#define SDL_MIN_UINT8 ((Uint8)0x00) /* 0 */
196typedef uint8_t Uint8;
197/**
198 * \brief A signed 16-bit integer type.
199 */
200#define SDL_MAX_SINT16 ((Sint16)0x7FFF) /* 32767 */
201#define SDL_MIN_SINT16 ((Sint16)(~0x7FFF)) /* -32768 */
202typedef int16_t Sint16;
203/**
204 * \brief An unsigned 16-bit integer type.
205 */
206#define SDL_MAX_UINT16 ((Uint16)0xFFFF) /* 65535 */
207#define SDL_MIN_UINT16 ((Uint16)0x0000) /* 0 */
208typedef uint16_t Uint16;
209/**
210 * \brief A signed 32-bit integer type.
211 */
212#define SDL_MAX_SINT32 ((Sint32)0x7FFFFFFF) /* 2147483647 */
213#define SDL_MIN_SINT32 ((Sint32)(~0x7FFFFFFF)) /* -2147483648 */
214typedef int32_t Sint32;
215/**
216 * \brief An unsigned 32-bit integer type.
217 */
218#define SDL_MAX_UINT32 ((Uint32)0xFFFFFFFFu) /* 4294967295 */
219#define SDL_MIN_UINT32 ((Uint32)0x00000000) /* 0 */
220typedef uint32_t Uint32;
221
222/**
223 * \brief A signed 64-bit integer type.
224 */
225#define SDL_MAX_SINT64 ((Sint64)0x7FFFFFFFFFFFFFFFll) /* 9223372036854775807 */
226#define SDL_MIN_SINT64 ((Sint64)(~0x7FFFFFFFFFFFFFFFll)) /* -9223372036854775808 */
227typedef int64_t Sint64;
228/**
229 * \brief An unsigned 64-bit integer type.
230 */
231#define SDL_MAX_UINT64 ((Uint64)0xFFFFFFFFFFFFFFFFull) /* 18446744073709551615 */
232#define SDL_MIN_UINT64 ((Uint64)(0x0000000000000000ull)) /* 0 */
233typedef uint64_t Uint64;
234
235/* @} *//* Basic data types */
236
237/* Make sure we have macros for printing width-based integers.
238 * <stdint.h> should define these but this is not true all platforms.
239 * (for example win32) */
240#ifndef SDL_PRIs64
241#ifdef PRIs64
242#define SDL_PRIs64 PRIs64
243#elif defined(__WIN32__)
244#define SDL_PRIs64 "I64d"
245#elif defined(__LINUX__) && defined(__LP64__)
246#define SDL_PRIs64 "ld"
247#else
248#define SDL_PRIs64 "lld"
249#endif
250#endif
251#ifndef SDL_PRIu64
252#ifdef PRIu64
253#define SDL_PRIu64 PRIu64
254#elif defined(__WIN32__)
255#define SDL_PRIu64 "I64u"
256#elif defined(__LINUX__) && defined(__LP64__)
257#define SDL_PRIu64 "lu"
258#else
259#define SDL_PRIu64 "llu"
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_PRIX64
274#ifdef PRIX64
275#define SDL_PRIX64 PRIX64
276#elif defined(__WIN32__)
277#define SDL_PRIX64 "I64X"
278#elif defined(__LINUX__) && defined(__LP64__)
279#define SDL_PRIX64 "lX"
280#else
281#define SDL_PRIX64 "llX"
282#endif
283#endif
284#ifndef SDL_PRIs32
285#ifdef PRId32
286#define SDL_PRIs32 PRId32
287#else
288#define SDL_PRIs32 "d"
289#endif
290#endif
291#ifndef SDL_PRIu32
292#ifdef PRIu32
293#define SDL_PRIu32 PRIu32
294#else
295#define SDL_PRIu32 "u"
296#endif
297#endif
298#ifndef SDL_PRIx32
299#ifdef PRIx32
300#define SDL_PRIx32 PRIx32
301#else
302#define SDL_PRIx32 "x"
303#endif
304#endif
305#ifndef SDL_PRIX32
306#ifdef PRIX32
307#define SDL_PRIX32 PRIX32
308#else
309#define SDL_PRIX32 "X"
310#endif
311#endif
312
313/* Annotations to help code analysis tools */
314#ifdef SDL_DISABLE_ANALYZE_MACROS
315#define SDL_IN_BYTECAP(x)
316#define SDL_INOUT_Z_CAP(x)
317#define SDL_OUT_Z_CAP(x)
318#define SDL_OUT_CAP(x)
319#define SDL_OUT_BYTECAP(x)
320#define SDL_OUT_Z_BYTECAP(x)
321#define SDL_PRINTF_FORMAT_STRING
322#define SDL_SCANF_FORMAT_STRING
323#define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
324#define SDL_SCANF_VARARG_FUNC( fmtargnumber )
325#else
326#if defined(_MSC_VER) && (_MSC_VER >= 1600) /* VS 2010 and above */
327#include <sal.h>
328
329#define SDL_IN_BYTECAP(x) _In_bytecount_(x)
330#define SDL_INOUT_Z_CAP(x) _Inout_z_cap_(x)
331#define SDL_OUT_Z_CAP(x) _Out_z_cap_(x)
332#define SDL_OUT_CAP(x) _Out_cap_(x)
333#define SDL_OUT_BYTECAP(x) _Out_bytecap_(x)
334#define SDL_OUT_Z_BYTECAP(x) _Out_z_bytecap_(x)
335
336#define SDL_PRINTF_FORMAT_STRING _Printf_format_string_
337#define SDL_SCANF_FORMAT_STRING _Scanf_format_string_impl_
338#else
339#define SDL_IN_BYTECAP(x)
340#define SDL_INOUT_Z_CAP(x)
341#define SDL_OUT_Z_CAP(x)
342#define SDL_OUT_CAP(x)
343#define SDL_OUT_BYTECAP(x)
344#define SDL_OUT_Z_BYTECAP(x)
345#define SDL_PRINTF_FORMAT_STRING
346#define SDL_SCANF_FORMAT_STRING
347#endif
348#if defined(__GNUC__)
349#define SDL_PRINTF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __printf__, fmtargnumber, fmtargnumber+1 )))
350#define SDL_SCANF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __scanf__, fmtargnumber, fmtargnumber+1 )))
351#else
352#define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
353#define SDL_SCANF_VARARG_FUNC( fmtargnumber )
354#endif
355#endif /* SDL_DISABLE_ANALYZE_MACROS */
356
357#define SDL_COMPILE_TIME_ASSERT(name, x) \
358 typedef int SDL_compile_time_assert_ ## name[(x) * 2 - 1]
359/** \cond */
360#ifndef DOXYGEN_SHOULD_IGNORE_THIS
361SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
362SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
363SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
364SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
365SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
366SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
367SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
368SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
369#endif /* DOXYGEN_SHOULD_IGNORE_THIS */
370/** \endcond */
371
372/* Check to make sure enums are the size of ints, for structure packing.
373 For both Watcom C/C++ and Borland C/C++ the compiler option that makes
374 enums having the size of an int must be enabled.
375 This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
376*/
377
378/** \cond */
379#ifndef DOXYGEN_SHOULD_IGNORE_THIS
380#if !defined(__ANDROID__) && !defined(__VITA__)
381 /* TODO: include/SDL_stdinc.h:174: error: size of array 'SDL_dummy_enum' is negative */
382typedef enum
383{
384 DUMMY_ENUM_VALUE
385} SDL_DUMMY_ENUM;
386
387SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
388#endif
389#endif /* DOXYGEN_SHOULD_IGNORE_THIS */
390/** \endcond */
391
392#include "begin_code.h"
393/* Set up for C function definitions, even when using C++ */
394#ifdef __cplusplus
395extern "C" {
396#endif
397
398#ifdef HAVE_ALLOCA
399#define SDL_stack_alloc(type, count) (type*)alloca(sizeof(type)*(count))
400#define SDL_stack_free(data)
401#else
402#define SDL_stack_alloc(type, count) (type*)SDL_malloc(sizeof(type)*(count))
403#define SDL_stack_free(data) SDL_free(data)
404#endif
405
406extern DECLSPEC void *SDLCALL SDL_malloc(size_t size);
407extern DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size);
408extern DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size);
409extern DECLSPEC void SDLCALL SDL_free(void *mem);
410
411typedef void *(SDLCALL *SDL_malloc_func)(size_t size);
412typedef void *(SDLCALL *SDL_calloc_func)(size_t nmemb, size_t size);
413typedef void *(SDLCALL *SDL_realloc_func)(void *mem, size_t size);
414typedef void (SDLCALL *SDL_free_func)(void *mem);
415
416/**
417 * Get the current set of SDL memory functions
418 *
419 * \since This function is available since SDL 2.0.7.
420 */
421extern DECLSPEC void SDLCALL SDL_GetMemoryFunctions(SDL_malloc_func *malloc_func,
422 SDL_calloc_func *calloc_func,
423 SDL_realloc_func *realloc_func,
424 SDL_free_func *free_func);
425
426/**
427 * Replace SDL's memory allocation functions with a custom set
428 *
429 * \since This function is available since SDL 2.0.7.
430 */
431extern DECLSPEC int SDLCALL SDL_SetMemoryFunctions(SDL_malloc_func malloc_func,
432 SDL_calloc_func calloc_func,
433 SDL_realloc_func realloc_func,
434 SDL_free_func free_func);
435
436/**
437 * Get the number of outstanding (unfreed) allocations
438 *
439 * \since This function is available since SDL 2.0.7.
440 */
441extern DECLSPEC int SDLCALL SDL_GetNumAllocations(void);
442
443extern DECLSPEC char *SDLCALL SDL_getenv(const char *name);
444extern DECLSPEC int SDLCALL SDL_setenv(const char *name, const char *value, int overwrite);
445
446extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size, int (*compare) (const void *, const void *));
447
448extern DECLSPEC int SDLCALL SDL_abs(int x);
449
450/* NOTE: these double-evaluate their arguments, so you should never have side effects in the parameters */
451#define SDL_min(x, y) (((x) < (y)) ? (x) : (y))
452#define SDL_max(x, y) (((x) > (y)) ? (x) : (y))
453#define SDL_clamp(x, a, b) (((x) < (a)) ? (a) : (((x) > (b)) ? (b) : (x)))
454
455extern DECLSPEC int SDLCALL SDL_isalpha(int x);
456extern DECLSPEC int SDLCALL SDL_isalnum(int x);
457extern DECLSPEC int SDLCALL SDL_isblank(int x);
458extern DECLSPEC int SDLCALL SDL_iscntrl(int x);
459extern DECLSPEC int SDLCALL SDL_isdigit(int x);
460extern DECLSPEC int SDLCALL SDL_isxdigit(int x);
461extern DECLSPEC int SDLCALL SDL_ispunct(int x);
462extern DECLSPEC int SDLCALL SDL_isspace(int x);
463extern DECLSPEC int SDLCALL SDL_isupper(int x);
464extern DECLSPEC int SDLCALL SDL_islower(int x);
465extern DECLSPEC int SDLCALL SDL_isprint(int x);
466extern DECLSPEC int SDLCALL SDL_isgraph(int x);
467extern DECLSPEC int SDLCALL SDL_toupper(int x);
468extern DECLSPEC int SDLCALL SDL_tolower(int x);
469
470extern DECLSPEC Uint32 SDLCALL SDL_crc32(Uint32 crc, const void *data, size_t len);
471
472extern DECLSPEC void *SDLCALL SDL_memset(SDL_OUT_BYTECAP(len) void *dst, int c, size_t len);
473
474#define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x)))
475#define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x)))
476#define SDL_zeroa(x) SDL_memset((x), 0, sizeof((x)))
477
478/* Note that memset() is a byte assignment and this is a 32-bit assignment, so they're not directly equivalent. */
479SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
480{
481#ifdef __APPLE__
482 memset_pattern4(dst, &val, dwords * 4);
483#elif defined(__GNUC__) && defined(__i386__)
484 int u0, u1, u2;
485 __asm__ __volatile__ (
486 "cld \n\t"
487 "rep ; stosl \n\t"
488 : "=&D" (u0), "=&a" (u1), "=&c" (u2)
489 : "0" (dst), "1" (val), "2" (SDL_static_cast(Uint32, dwords))
490 : "memory"
491 );
492#else
493 size_t _n = (dwords + 3) / 4;
494 Uint32 *_p = SDL_static_cast(Uint32 *, dst);
495 Uint32 _val = (val);
496 if (dwords == 0) {
497 return;
498 }
499 switch (dwords % 4) {
500 case 0: do { *_p++ = _val; SDL_FALLTHROUGH;
501 case 3: *_p++ = _val; SDL_FALLTHROUGH;
502 case 2: *_p++ = _val; SDL_FALLTHROUGH;
503 case 1: *_p++ = _val;
504 } while ( --_n );
505 }
506#endif
507}
508
509extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
510
511extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
512extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
513
514extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
515extern DECLSPEC size_t SDLCALL SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
516extern DECLSPEC size_t SDLCALL SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
517extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr);
518extern DECLSPEC wchar_t *SDLCALL SDL_wcsstr(const wchar_t *haystack, const wchar_t *needle);
519
520extern DECLSPEC int SDLCALL SDL_wcscmp(const wchar_t *str1, const wchar_t *str2);
521extern DECLSPEC int SDLCALL SDL_wcsncmp(const wchar_t *str1, const wchar_t *str2, size_t maxlen);
522extern DECLSPEC int SDLCALL SDL_wcscasecmp(const wchar_t *str1, const wchar_t *str2);
523extern DECLSPEC int SDLCALL SDL_wcsncasecmp(const wchar_t *str1, const wchar_t *str2, size_t len);
524
525extern DECLSPEC size_t SDLCALL SDL_strlen(const char *str);
526extern DECLSPEC size_t SDLCALL SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
527extern DECLSPEC size_t SDLCALL SDL_utf8strlcpy(SDL_OUT_Z_CAP(dst_bytes) char *dst, const char *src, size_t dst_bytes);
528extern DECLSPEC size_t SDLCALL SDL_strlcat(SDL_INOUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
529extern DECLSPEC char *SDLCALL SDL_strdup(const char *str);
530extern DECLSPEC char *SDLCALL SDL_strrev(char *str);
531extern DECLSPEC char *SDLCALL SDL_strupr(char *str);
532extern DECLSPEC char *SDLCALL SDL_strlwr(char *str);
533extern DECLSPEC char *SDLCALL SDL_strchr(const char *str, int c);
534extern DECLSPEC char *SDLCALL SDL_strrchr(const char *str, int c);
535extern DECLSPEC char *SDLCALL SDL_strstr(const char *haystack, const char *needle);
536extern DECLSPEC char *SDLCALL SDL_strtokr(char *s1, const char *s2, char **saveptr);
537extern DECLSPEC size_t SDLCALL SDL_utf8strlen(const char *str);
538
539extern DECLSPEC char *SDLCALL SDL_itoa(int value, char *str, int radix);
540extern DECLSPEC char *SDLCALL SDL_uitoa(unsigned int value, char *str, int radix);
541extern DECLSPEC char *SDLCALL SDL_ltoa(long value, char *str, int radix);
542extern DECLSPEC char *SDLCALL SDL_ultoa(unsigned long value, char *str, int radix);
543extern DECLSPEC char *SDLCALL SDL_lltoa(Sint64 value, char *str, int radix);
544extern DECLSPEC char *SDLCALL SDL_ulltoa(Uint64 value, char *str, int radix);
545
546extern DECLSPEC int SDLCALL SDL_atoi(const char *str);
547extern DECLSPEC double SDLCALL SDL_atof(const char *str);
548extern DECLSPEC long SDLCALL SDL_strtol(const char *str, char **endp, int base);
549extern DECLSPEC unsigned long SDLCALL SDL_strtoul(const char *str, char **endp, int base);
550extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *str, char **endp, int base);
551extern DECLSPEC Uint64 SDLCALL SDL_strtoull(const char *str, char **endp, int base);
552extern DECLSPEC double SDLCALL SDL_strtod(const char *str, char **endp);
553
554extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2);
555extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2, size_t maxlen);
556extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1, const char *str2);
557extern DECLSPEC int SDLCALL SDL_strncasecmp(const char *str1, const char *str2, size_t len);
558
559extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, SDL_SCANF_FORMAT_STRING const char *fmt, ...) SDL_SCANF_VARARG_FUNC(2);
560extern DECLSPEC int SDLCALL SDL_vsscanf(const char *text, const char *fmt, va_list ap);
561extern 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);
562extern DECLSPEC int SDLCALL SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, va_list ap);
563extern DECLSPEC int SDLCALL SDL_asprintf(char **strp, SDL_PRINTF_FORMAT_STRING const char *fmt, ...) SDL_PRINTF_VARARG_FUNC(2);
564extern DECLSPEC int SDLCALL SDL_vasprintf(char **strp, const char *fmt, va_list ap);
565
566#ifndef HAVE_M_PI
567#ifndef M_PI
568#define M_PI 3.14159265358979323846264338327950288 /**< pi */
569#endif
570#endif
571
572/**
573 * Use this function to compute arc cosine of `x`.
574 *
575 * The definition of `y = acos(x)` is `x = cos(y)`.
576 *
577 * Domain: `-1 <= x <= 1`
578 *
579 * Range: `0 <= y <= Pi`
580 *
581 * \param x floating point value, in radians.
582 * \returns arc cosine of `x`.
583 *
584 * \since This function is available since SDL 2.0.2.
585 */
586extern DECLSPEC double SDLCALL SDL_acos(double x);
587extern DECLSPEC float SDLCALL SDL_acosf(float x);
588extern DECLSPEC double SDLCALL SDL_asin(double x);
589extern DECLSPEC float SDLCALL SDL_asinf(float x);
590extern DECLSPEC double SDLCALL SDL_atan(double x);
591extern DECLSPEC float SDLCALL SDL_atanf(float x);
592extern DECLSPEC double SDLCALL SDL_atan2(double y, double x);
593extern DECLSPEC float SDLCALL SDL_atan2f(float y, float x);
594extern DECLSPEC double SDLCALL SDL_ceil(double x);
595extern DECLSPEC float SDLCALL SDL_ceilf(float x);
596extern DECLSPEC double SDLCALL SDL_copysign(double x, double y);
597extern DECLSPEC float SDLCALL SDL_copysignf(float x, float y);
598extern DECLSPEC double SDLCALL SDL_cos(double x);
599extern DECLSPEC float SDLCALL SDL_cosf(float x);
600extern DECLSPEC double SDLCALL SDL_exp(double x);
601extern DECLSPEC float SDLCALL SDL_expf(float x);
602extern DECLSPEC double SDLCALL SDL_fabs(double x);
603extern DECLSPEC float SDLCALL SDL_fabsf(float x);
604extern DECLSPEC double SDLCALL SDL_floor(double x);
605extern DECLSPEC float SDLCALL SDL_floorf(float x);
606extern DECLSPEC double SDLCALL SDL_trunc(double x);
607extern DECLSPEC float SDLCALL SDL_truncf(float x);
608extern DECLSPEC double SDLCALL SDL_fmod(double x, double y);
609extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
610extern DECLSPEC double SDLCALL SDL_log(double x);
611extern DECLSPEC float SDLCALL SDL_logf(float x);
612extern DECLSPEC double SDLCALL SDL_log10(double x);
613extern DECLSPEC float SDLCALL SDL_log10f(float x);
614extern DECLSPEC double SDLCALL SDL_pow(double x, double y);
615extern DECLSPEC float SDLCALL SDL_powf(float x, float y);
616extern DECLSPEC double SDLCALL SDL_round(double x);
617extern DECLSPEC float SDLCALL SDL_roundf(float x);
618extern DECLSPEC long SDLCALL SDL_lround(double x);
619extern DECLSPEC long SDLCALL SDL_lroundf(float x);
620extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n);
621extern DECLSPEC float SDLCALL SDL_scalbnf(float x, int n);
622extern DECLSPEC double SDLCALL SDL_sin(double x);
623extern DECLSPEC float SDLCALL SDL_sinf(float x);
624extern DECLSPEC double SDLCALL SDL_sqrt(double x);
625extern DECLSPEC float SDLCALL SDL_sqrtf(float x);
626extern DECLSPEC double SDLCALL SDL_tan(double x);
627extern DECLSPEC float SDLCALL SDL_tanf(float x);
628
629/* The SDL implementation of iconv() returns these error codes */
630#define SDL_ICONV_ERROR (size_t)-1
631#define SDL_ICONV_E2BIG (size_t)-2
632#define SDL_ICONV_EILSEQ (size_t)-3
633#define SDL_ICONV_EINVAL (size_t)-4
634
635/* SDL_iconv_* are now always real symbols/types, not macros or inlined. */
636typedef struct _SDL_iconv_t *SDL_iconv_t;
637extern DECLSPEC SDL_iconv_t SDLCALL SDL_iconv_open(const char *tocode,
638 const char *fromcode);
639extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
640extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf,
641 size_t * inbytesleft, char **outbuf,
642 size_t * outbytesleft);
643
644/**
645 * This function converts a string between encodings in one pass, returning a
646 * string that must be freed with SDL_free() or NULL on error.
647 *
648 * \since This function is available since SDL 2.0.0.
649 */
650extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode,
651 const char *fromcode,
652 const char *inbuf,
653 size_t inbytesleft);
654#define SDL_iconv_utf8_locale(S) SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1)
655#define SDL_iconv_utf8_ucs2(S) (Uint16 *)SDL_iconv_string("UCS-2-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
656#define SDL_iconv_utf8_ucs4(S) (Uint32 *)SDL_iconv_string("UCS-4-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
657#define SDL_iconv_wchar_utf8(S) SDL_iconv_string("UTF-8", "WCHAR_T", (char *)S, (SDL_wcslen(S)+1)*sizeof(wchar_t))
658
659/* force builds using Clang's static analysis tools to use literal C runtime
660 here, since there are possibly tests that are ineffective otherwise. */
661#if defined(__clang_analyzer__) && !defined(SDL_DISABLE_ANALYZE_MACROS)
662
663/* The analyzer knows about strlcpy even when the system doesn't provide it */
664#ifndef HAVE_STRLCPY
665size_t strlcpy(char* dst, const char* src, size_t size);
666#endif
667
668/* The analyzer knows about strlcat even when the system doesn't provide it */
669#ifndef HAVE_STRLCAT
670size_t strlcat(char* dst, const char* src, size_t size);
671#endif
672
673#define SDL_malloc malloc
674#define SDL_calloc calloc
675#define SDL_realloc realloc
676#define SDL_free free
677#define SDL_memset memset
678#define SDL_memcpy memcpy
679#define SDL_memmove memmove
680#define SDL_memcmp memcmp
681#define SDL_strlcpy strlcpy
682#define SDL_strlcat strlcat
683#define SDL_strlen strlen
684#define SDL_wcslen wcslen
685#define SDL_wcslcpy wcslcpy
686#define SDL_wcslcat wcslcat
687#define SDL_strdup strdup
688#define SDL_wcsdup wcsdup
689#define SDL_strchr strchr
690#define SDL_strrchr strrchr
691#define SDL_strstr strstr
692#define SDL_wcsstr wcsstr
693#define SDL_strtokr strtok_r
694#define SDL_strcmp strcmp
695#define SDL_wcscmp wcscmp
696#define SDL_strncmp strncmp
697#define SDL_wcsncmp wcsncmp
698#define SDL_strcasecmp strcasecmp
699#define SDL_strncasecmp strncasecmp
700#define SDL_sscanf sscanf
701#define SDL_vsscanf vsscanf
702#define SDL_snprintf snprintf
703#define SDL_vsnprintf vsnprintf
704#endif
705
706SDL_FORCE_INLINE void *SDL_memcpy4(SDL_OUT_BYTECAP(dwords*4) void *dst, SDL_IN_BYTECAP(dwords*4) const void *src, size_t dwords)
707{
708 return SDL_memcpy(dst, src, len: dwords * 4);
709}
710
711/* Ends C function definitions when using C++ */
712#ifdef __cplusplus
713}
714#endif
715#include "close_code.h"
716
717#endif /* SDL_stdinc_h_ */
718
719/* vi: set ts=4 sw=4 expandtab: */
720

source code of include/SDL2/SDL_stdinc.h