1 /* 2 Simple DirectMedia Layer 3 Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org> 4 5 This software is provided 'as-is', without any express or implied 6 warranty. In no event will the authors be held liable for any damages 7 arising from the use of this software. 8 9 Permission is granted to anyone to use this software for any purpose, 10 including commercial applications, and to alter it and redistribute it 11 freely, subject to the following restrictions: 12 13 1. The origin of this software must not be misrepresented; you must not 14 claim that you wrote the original software. If you use this software 15 in a product, an acknowledgment in the product documentation would be 16 appreciated but is not required. 17 2. Altered source versions must be plainly marked as such, and must not be 18 misrepresented as being the original software. 19 3. This notice may not be removed or altered from any source distribution. 20 */ 21 22 /** 23 * \file SDL_stdinc.h 24 * 25 * This is a general header that includes C language support. 26 */ 27 28 #ifndef SDL_stdinc_h_ 29 #define SDL_stdinc_h_ 30 31 #include "SDL_config.h" 32 33 #ifdef HAVE_SYS_TYPES_H 34 #include <sys/types.h> 35 #endif 36 #ifdef HAVE_STDIO_H 37 #include <stdio.h> 38 #endif 39 #if defined(STDC_HEADERS) 40 # include <stdlib.h> 41 # include <stddef.h> 42 # include <stdarg.h> 43 #else 44 # if defined(HAVE_STDLIB_H) 45 # include <stdlib.h> 46 # elif defined(HAVE_MALLOC_H) 47 # include <malloc.h> 48 # endif 49 # if defined(HAVE_STDDEF_H) 50 # include <stddef.h> 51 # endif 52 # if defined(HAVE_STDARG_H) 53 # include <stdarg.h> 54 # endif 55 #endif 56 #ifdef HAVE_STRING_H 57 # if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H) 58 # include <memory.h> 59 # endif 60 # include <string.h> 61 #endif 62 #ifdef HAVE_STRINGS_H 63 # include <strings.h> 64 #endif 65 #ifdef HAVE_WCHAR_H 66 # include <wchar.h> 67 #endif 68 #if defined(HAVE_INTTYPES_H) 69 # include <inttypes.h> 70 #elif defined(HAVE_STDINT_H) 71 # include <stdint.h> 72 #endif 73 #ifdef HAVE_CTYPE_H 74 # include <ctype.h> 75 #endif 76 #ifdef HAVE_MATH_H 77 # if defined(__WINRT__) 78 /* Defining _USE_MATH_DEFINES is required to get M_PI to be defined on 79 WinRT. See http://msdn.microsoft.com/en-us/library/4hwaceh6.aspx 80 for more information. 81 */ 82 # define _USE_MATH_DEFINES 83 # endif 84 # include <math.h> 85 #endif 86 #ifdef HAVE_FLOAT_H 87 # include <float.h> 88 #endif 89 #if defined(HAVE_ALLOCA) && !defined(alloca) 90 # if defined(HAVE_ALLOCA_H) 91 # include <alloca.h> 92 # elif defined(__GNUC__) 93 # define alloca __builtin_alloca 94 # elif defined(_MSC_VER) 95 # include <malloc.h> 96 # define alloca _alloca 97 # elif defined(__WATCOMC__) 98 # include <malloc.h> 99 # elif defined(__BORLANDC__) 100 # include <malloc.h> 101 # elif defined(__DMC__) 102 # include <stdlib.h> 103 # elif defined(__AIX__) 104 #pragma alloca 105 # elif defined(__MRC__) 106 void *alloca(unsigned); 107 # else 108 char *alloca(); 109 # endif 110 #endif 111 112 /** 113 * The number of elements in an array. 114 */ 115 #define SDL_arraysize(array) (sizeof(array)/sizeof(array[0])) 116 #define SDL_TABLESIZE(table) SDL_arraysize(table) 117 118 /** 119 * Macro useful for building other macros with strings in them 120 * 121 * e.g. #define LOG_ERROR(X) OutputDebugString(SDL_STRINGIFY_ARG(__FUNCTION__) ": " X "\n") 122 */ 123 #define SDL_STRINGIFY_ARG(arg) #arg 124 125 /** 126 * \name Cast operators 127 * 128 * Use proper C++ casts when compiled as C++ to be compatible with the option 129 * -Wold-style-cast of GCC (and -Werror=old-style-cast in GCC 4.2 and above). 130 */ 131 /* @{ */ 132 #ifdef __cplusplus 133 #define SDL_reinterpret_cast(type, expression) reinterpret_cast<type>(expression) 134 #define SDL_static_cast(type, expression) static_cast<type>(expression) 135 #define SDL_const_cast(type, expression) const_cast<type>(expression) 136 #else 137 #define SDL_reinterpret_cast(type, expression) ((type)(expression)) 138 #define SDL_static_cast(type, expression) ((type)(expression)) 139 #define SDL_const_cast(type, expression) ((type)(expression)) 140 #endif 141 /* @} *//* Cast operators */ 142 143 /* Define a four character code as a Uint32 */ 144 #define SDL_FOURCC(A, B, C, D) \ 145 ((SDL_static_cast(Uint32, SDL_static_cast(Uint8, (A))) << 0) | \ 146 (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (B))) << 8) | \ 147 (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (C))) << 16) | \ 148 (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (D))) << 24)) 149 150 /** 151 * \name Basic data types 152 */ 153 /* @{ */ 154 155 #ifdef __CC_ARM 156 /* ARM's compiler throws warnings if we use an enum: like "SDL_bool x = a < b;" */ 157 #define SDL_FALSE 0 158 #define SDL_TRUE 1 159 typedef int SDL_bool; 160 #else 161 typedef enum 162 { 163 SDL_FALSE = 0, 164 SDL_TRUE = 1 165 } SDL_bool; 166 #endif 167 168 /** 169 * \brief A signed 8-bit integer type. 170 */ 171 #define SDL_MAX_SINT8 ((Sint8)0x7F) /* 127 */ 172 #define SDL_MIN_SINT8 ((Sint8)(~0x7F)) /* -128 */ 173 typedef int8_t Sint8; 174 /** 175 * \brief An unsigned 8-bit integer type. 176 */ 177 #define SDL_MAX_UINT8 ((Uint8)0xFF) /* 255 */ 178 #define SDL_MIN_UINT8 ((Uint8)0x00) /* 0 */ 179 typedef uint8_t Uint8; 180 /** 181 * \brief A signed 16-bit integer type. 182 */ 183 #define SDL_MAX_SINT16 ((Sint16)0x7FFF) /* 32767 */ 184 #define SDL_MIN_SINT16 ((Sint16)(~0x7FFF)) /* -32768 */ 185 typedef int16_t Sint16; 186 /** 187 * \brief An unsigned 16-bit integer type. 188 */ 189 #define SDL_MAX_UINT16 ((Uint16)0xFFFF) /* 65535 */ 190 #define SDL_MIN_UINT16 ((Uint16)0x0000) /* 0 */ 191 typedef uint16_t Uint16; 192 /** 193 * \brief A signed 32-bit integer type. 194 */ 195 #define SDL_MAX_SINT32 ((Sint32)0x7FFFFFFF) /* 2147483647 */ 196 #define SDL_MIN_SINT32 ((Sint32)(~0x7FFFFFFF)) /* -2147483648 */ 197 typedef int32_t Sint32; 198 /** 199 * \brief An unsigned 32-bit integer type. 200 */ 201 #define SDL_MAX_UINT32 ((Uint32)0xFFFFFFFFu) /* 4294967295 */ 202 #define SDL_MIN_UINT32 ((Uint32)0x00000000) /* 0 */ 203 typedef uint32_t Uint32; 204 205 /** 206 * \brief A signed 64-bit integer type. 207 */ 208 #define SDL_MAX_SINT64 ((Sint64)0x7FFFFFFFFFFFFFFFll) /* 9223372036854775807 */ 209 #define SDL_MIN_SINT64 ((Sint64)(~0x7FFFFFFFFFFFFFFFll)) /* -9223372036854775808 */ 210 typedef int64_t Sint64; 211 /** 212 * \brief An unsigned 64-bit integer type. 213 */ 214 #define SDL_MAX_UINT64 ((Uint64)0xFFFFFFFFFFFFFFFFull) /* 18446744073709551615 */ 215 #define SDL_MIN_UINT64 ((Uint64)(0x0000000000000000ull)) /* 0 */ 216 typedef uint64_t Uint64; 217 218 /* @} *//* Basic data types */ 219 220 /* Make sure we have macros for printing 64 bit values. 221 * <stdint.h> should define these but this is not true all platforms. 222 * (for example win32) */ 223 #ifndef SDL_PRIs64 224 #ifdef PRIs64 225 #define SDL_PRIs64 PRIs64 226 #elif defined(__WIN32__) 227 #define SDL_PRIs64 "I64d" 228 #elif defined(__LINUX__) && defined(__LP64__) 229 #define SDL_PRIs64 "ld" 230 #else 231 #define SDL_PRIs64 "lld" 232 #endif 233 #endif 234 #ifndef SDL_PRIu64 235 #ifdef PRIu64 236 #define SDL_PRIu64 PRIu64 237 #elif defined(__WIN32__) 238 #define SDL_PRIu64 "I64u" 239 #elif defined(__LINUX__) && defined(__LP64__) 240 #define SDL_PRIu64 "lu" 241 #else 242 #define SDL_PRIu64 "llu" 243 #endif 244 #endif 245 #ifndef SDL_PRIx64 246 #ifdef PRIx64 247 #define SDL_PRIx64 PRIx64 248 #elif defined(__WIN32__) 249 #define SDL_PRIx64 "I64x" 250 #elif defined(__LINUX__) && defined(__LP64__) 251 #define SDL_PRIx64 "lx" 252 #else 253 #define SDL_PRIx64 "llx" 254 #endif 255 #endif 256 #ifndef SDL_PRIX64 257 #ifdef PRIX64 258 #define SDL_PRIX64 PRIX64 259 #elif defined(__WIN32__) 260 #define SDL_PRIX64 "I64X" 261 #elif defined(__LINUX__) && defined(__LP64__) 262 #define SDL_PRIX64 "lX" 263 #else 264 #define SDL_PRIX64 "llX" 265 #endif 266 #endif 267 268 /* Annotations to help code analysis tools */ 269 #ifdef SDL_DISABLE_ANALYZE_MACROS 270 #define SDL_IN_BYTECAP(x) 271 #define SDL_INOUT_Z_CAP(x) 272 #define SDL_OUT_Z_CAP(x) 273 #define SDL_OUT_CAP(x) 274 #define SDL_OUT_BYTECAP(x) 275 #define SDL_OUT_Z_BYTECAP(x) 276 #define SDL_PRINTF_FORMAT_STRING 277 #define SDL_SCANF_FORMAT_STRING 278 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber ) 279 #define SDL_SCANF_VARARG_FUNC( fmtargnumber ) 280 #else 281 #if defined(_MSC_VER) && (_MSC_VER >= 1600) /* VS 2010 and above */ 282 #include <sal.h> 283 284 #define SDL_IN_BYTECAP(x) _In_bytecount_(x) 285 #define SDL_INOUT_Z_CAP(x) _Inout_z_cap_(x) 286 #define SDL_OUT_Z_CAP(x) _Out_z_cap_(x) 287 #define SDL_OUT_CAP(x) _Out_cap_(x) 288 #define SDL_OUT_BYTECAP(x) _Out_bytecap_(x) 289 #define SDL_OUT_Z_BYTECAP(x) _Out_z_bytecap_(x) 290 291 #define SDL_PRINTF_FORMAT_STRING _Printf_format_string_ 292 #define SDL_SCANF_FORMAT_STRING _Scanf_format_string_impl_ 293 #else 294 #define SDL_IN_BYTECAP(x) 295 #define SDL_INOUT_Z_CAP(x) 296 #define SDL_OUT_Z_CAP(x) 297 #define SDL_OUT_CAP(x) 298 #define SDL_OUT_BYTECAP(x) 299 #define SDL_OUT_Z_BYTECAP(x) 300 #define SDL_PRINTF_FORMAT_STRING 301 #define SDL_SCANF_FORMAT_STRING 302 #endif 303 #if defined(__GNUC__) 304 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __printf__, fmtargnumber, fmtargnumber+1 ))) 305 #define SDL_SCANF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __scanf__, fmtargnumber, fmtargnumber+1 ))) 306 #else 307 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber ) 308 #define SDL_SCANF_VARARG_FUNC( fmtargnumber ) 309 #endif 310 #endif /* SDL_DISABLE_ANALYZE_MACROS */ 311 312 #define SDL_COMPILE_TIME_ASSERT(name, x) \ 313 typedef int SDL_compile_time_assert_ ## name[(x) * 2 - 1] 314 /** \cond */ 315 #ifndef DOXYGEN_SHOULD_IGNORE_THIS 316 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1); 317 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1); 318 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2); 319 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2); 320 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4); 321 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4); 322 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8); 323 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8); 324 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */ 325 /** \endcond */ 326 327 /* Check to make sure enums are the size of ints, for structure packing. 328 For both Watcom C/C++ and Borland C/C++ the compiler option that makes 329 enums having the size of an int must be enabled. 330 This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11). 331 */ 332 333 /** \cond */ 334 #ifndef DOXYGEN_SHOULD_IGNORE_THIS 335 #if !defined(__ANDROID__) 336 /* TODO: include/SDL_stdinc.h:174: error: size of array 'SDL_dummy_enum' is negative */ 337 typedef enum 338 { 339 DUMMY_ENUM_VALUE 340 } SDL_DUMMY_ENUM; 341 #ifndef __ALIOS__ 342 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int)); 343 #endif 344 #endif 345 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */ 346 /** \endcond */ 347 348 #include "begin_code.h" 349 /* Set up for C function definitions, even when using C++ */ 350 #ifdef __cplusplus 351 extern "C" { 352 #endif 353 354 #ifdef HAVE_ALLOCA 355 #define SDL_stack_alloc(type, count) (type*)alloca(sizeof(type)*(count)) 356 #define SDL_stack_free(data) 357 #else 358 #define SDL_stack_alloc(type, count) (type*)SDL_malloc(sizeof(type)*(count)) 359 #define SDL_stack_free(data) SDL_free(data) 360 #endif 361 362 extern DECLSPEC void *SDLCALL SDL_malloc(size_t size); 363 extern DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size); 364 extern DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size); 365 extern DECLSPEC void SDLCALL SDL_free(void *mem); 366 367 typedef void *(SDLCALL *SDL_malloc_func)(size_t size); 368 typedef void *(SDLCALL *SDL_calloc_func)(size_t nmemb, size_t size); 369 typedef void *(SDLCALL *SDL_realloc_func)(void *mem, size_t size); 370 typedef void (SDLCALL *SDL_free_func)(void *mem); 371 372 /** 373 * \brief Get the current set of SDL memory functions 374 */ 375 extern DECLSPEC void SDLCALL SDL_GetMemoryFunctions(SDL_malloc_func *malloc_func, 376 SDL_calloc_func *calloc_func, 377 SDL_realloc_func *realloc_func, 378 SDL_free_func *free_func); 379 380 /** 381 * \brief Replace SDL's memory allocation functions with a custom set 382 * 383 * \note If you are replacing SDL's memory functions, you should call 384 * SDL_GetNumAllocations() and be very careful if it returns non-zero. 385 * That means that your free function will be called with memory 386 * allocated by the previous memory allocation functions. 387 */ 388 extern DECLSPEC int SDLCALL SDL_SetMemoryFunctions(SDL_malloc_func malloc_func, 389 SDL_calloc_func calloc_func, 390 SDL_realloc_func realloc_func, 391 SDL_free_func free_func); 392 393 /** 394 * \brief Get the number of outstanding (unfreed) allocations 395 */ 396 extern DECLSPEC int SDLCALL SDL_GetNumAllocations(void); 397 398 extern DECLSPEC char *SDLCALL SDL_getenv(const char *name); 399 extern DECLSPEC int SDLCALL SDL_setenv(const char *name, const char *value, int overwrite); 400 401 extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size, int (*compare) (const void *, const void *)); 402 403 extern DECLSPEC int SDLCALL SDL_abs(int x); 404 405 /* !!! FIXME: these have side effects. You probably shouldn't use them. */ 406 /* !!! FIXME: Maybe we do forceinline functions of SDL_mini, SDL_minf, etc? */ 407 #define SDL_min(x, y) (((x) < (y)) ? (x) : (y)) 408 #define SDL_max(x, y) (((x) > (y)) ? (x) : (y)) 409 410 extern DECLSPEC int SDLCALL SDL_isdigit(int x); 411 extern DECLSPEC int SDLCALL SDL_isspace(int x); 412 extern DECLSPEC int SDLCALL SDL_isupper(int x); 413 extern DECLSPEC int SDLCALL SDL_islower(int x); 414 extern DECLSPEC int SDLCALL SDL_toupper(int x); 415 extern DECLSPEC int SDLCALL SDL_tolower(int x); 416 417 extern DECLSPEC void *SDLCALL SDL_memset(SDL_OUT_BYTECAP(len) void *dst, int c, size_t len); 418 419 #define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x))) 420 #define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x))) 421 #define SDL_zeroa(x) SDL_memset((x), 0, sizeof((x))) 422 423 /* 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)424 SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords) 425 { 426 #ifdef __APPLE__ 427 memset_pattern4(dst, &val, dwords * 4); 428 #elif defined(__GNUC__) && defined(i386) 429 int u0, u1, u2; 430 __asm__ __volatile__ ( 431 "cld \n\t" 432 "rep ; stosl \n\t" 433 : "=&D" (u0), "=&a" (u1), "=&c" (u2) 434 : "0" (dst), "1" (val), "2" (SDL_static_cast(Uint32, dwords)) 435 : "memory" 436 ); 437 #else 438 size_t _n = (dwords + 3) / 4; 439 Uint32 *_p = SDL_static_cast(Uint32 *, dst); 440 Uint32 _val = (val); 441 if (dwords == 0) 442 return; 443 switch (dwords % 4) 444 { 445 case 0: do { *_p++ = _val; /* fallthrough */ 446 case 3: *_p++ = _val; /* fallthrough */ 447 case 2: *_p++ = _val; /* fallthrough */ 448 case 1: *_p++ = _val; /* fallthrough */ 449 } while ( --_n ); 450 } 451 #endif 452 } 453 454 extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len); 455 456 extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len); 457 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len); 458 459 extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr); 460 extern DECLSPEC size_t SDLCALL SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen); 461 extern DECLSPEC size_t SDLCALL SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen); 462 extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr); 463 extern DECLSPEC wchar_t *SDLCALL SDL_wcsstr(const wchar_t *haystack, const wchar_t *needle); 464 465 extern DECLSPEC int SDLCALL SDL_wcscmp(const wchar_t *str1, const wchar_t *str2); 466 extern DECLSPEC int SDLCALL SDL_wcsncmp(const wchar_t *str1, const wchar_t *str2, size_t maxlen); 467 468 extern DECLSPEC size_t SDLCALL SDL_strlen(const char *str); 469 extern DECLSPEC size_t SDLCALL SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen); 470 extern DECLSPEC size_t SDLCALL SDL_utf8strlcpy(SDL_OUT_Z_CAP(dst_bytes) char *dst, const char *src, size_t dst_bytes); 471 extern DECLSPEC size_t SDLCALL SDL_strlcat(SDL_INOUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen); 472 extern DECLSPEC char *SDLCALL SDL_strdup(const char *str); 473 extern DECLSPEC char *SDLCALL SDL_strrev(char *str); 474 extern DECLSPEC char *SDLCALL SDL_strupr(char *str); 475 extern DECLSPEC char *SDLCALL SDL_strlwr(char *str); 476 extern DECLSPEC char *SDLCALL SDL_strchr(const char *str, int c); 477 extern DECLSPEC char *SDLCALL SDL_strrchr(const char *str, int c); 478 extern DECLSPEC char *SDLCALL SDL_strstr(const char *haystack, const char *needle); 479 extern DECLSPEC char *SDLCALL SDL_strtokr(char *s1, const char *s2, char **saveptr); 480 extern DECLSPEC size_t SDLCALL SDL_utf8strlen(const char *str); 481 482 extern DECLSPEC char *SDLCALL SDL_itoa(int value, char *str, int radix); 483 extern DECLSPEC char *SDLCALL SDL_uitoa(unsigned int value, char *str, int radix); 484 extern DECLSPEC char *SDLCALL SDL_ltoa(long value, char *str, int radix); 485 extern DECLSPEC char *SDLCALL SDL_ultoa(unsigned long value, char *str, int radix); 486 extern DECLSPEC char *SDLCALL SDL_lltoa(Sint64 value, char *str, int radix); 487 extern DECLSPEC char *SDLCALL SDL_ulltoa(Uint64 value, char *str, int radix); 488 489 extern DECLSPEC int SDLCALL SDL_atoi(const char *str); 490 extern DECLSPEC double SDLCALL SDL_atof(const char *str); 491 extern DECLSPEC long SDLCALL SDL_strtol(const char *str, char **endp, int base); 492 extern DECLSPEC unsigned long SDLCALL SDL_strtoul(const char *str, char **endp, int base); 493 extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *str, char **endp, int base); 494 extern DECLSPEC Uint64 SDLCALL SDL_strtoull(const char *str, char **endp, int base); 495 extern DECLSPEC double SDLCALL SDL_strtod(const char *str, char **endp); 496 497 extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2); 498 extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2, size_t maxlen); 499 extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1, const char *str2); 500 extern DECLSPEC int SDLCALL SDL_strncasecmp(const char *str1, const char *str2, size_t len); 501 502 extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, SDL_SCANF_FORMAT_STRING const char *fmt, ...) SDL_SCANF_VARARG_FUNC(2); 503 extern DECLSPEC int SDLCALL SDL_vsscanf(const char *text, const char *fmt, va_list ap); 504 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); 505 extern DECLSPEC int SDLCALL SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, va_list ap); 506 507 #ifndef HAVE_M_PI 508 #ifndef M_PI 509 #define M_PI 3.14159265358979323846264338327950288 /**< pi */ 510 #endif 511 #endif 512 513 extern DECLSPEC double SDLCALL SDL_acos(double x); 514 extern DECLSPEC float SDLCALL SDL_acosf(float x); 515 extern DECLSPEC double SDLCALL SDL_asin(double x); 516 extern DECLSPEC float SDLCALL SDL_asinf(float x); 517 extern DECLSPEC double SDLCALL SDL_atan(double x); 518 extern DECLSPEC float SDLCALL SDL_atanf(float x); 519 extern DECLSPEC double SDLCALL SDL_atan2(double x, double y); 520 extern DECLSPEC float SDLCALL SDL_atan2f(float x, float y); 521 extern DECLSPEC double SDLCALL SDL_ceil(double x); 522 extern DECLSPEC float SDLCALL SDL_ceilf(float x); 523 extern DECLSPEC double SDLCALL SDL_copysign(double x, double y); 524 extern DECLSPEC float SDLCALL SDL_copysignf(float x, float y); 525 extern DECLSPEC double SDLCALL SDL_cos(double x); 526 extern DECLSPEC float SDLCALL SDL_cosf(float x); 527 extern DECLSPEC double SDLCALL SDL_exp(double x); 528 extern DECLSPEC float SDLCALL SDL_expf(float x); 529 extern DECLSPEC double SDLCALL SDL_fabs(double x); 530 extern DECLSPEC float SDLCALL SDL_fabsf(float x); 531 extern DECLSPEC double SDLCALL SDL_floor(double x); 532 extern DECLSPEC float SDLCALL SDL_floorf(float x); 533 extern DECLSPEC double SDLCALL SDL_trunc(double x); 534 extern DECLSPEC float SDLCALL SDL_truncf(float x); 535 extern DECLSPEC double SDLCALL SDL_fmod(double x, double y); 536 extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y); 537 extern DECLSPEC double SDLCALL SDL_log(double x); 538 extern DECLSPEC float SDLCALL SDL_logf(float x); 539 extern DECLSPEC double SDLCALL SDL_log10(double x); 540 extern DECLSPEC float SDLCALL SDL_log10f(float x); 541 extern DECLSPEC double SDLCALL SDL_pow(double x, double y); 542 extern DECLSPEC float SDLCALL SDL_powf(float x, float y); 543 extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n); 544 extern DECLSPEC float SDLCALL SDL_scalbnf(float x, int n); 545 extern DECLSPEC double SDLCALL SDL_sin(double x); 546 extern DECLSPEC float SDLCALL SDL_sinf(float x); 547 extern DECLSPEC double SDLCALL SDL_sqrt(double x); 548 extern DECLSPEC float SDLCALL SDL_sqrtf(float x); 549 extern DECLSPEC double SDLCALL SDL_tan(double x); 550 extern DECLSPEC float SDLCALL SDL_tanf(float x); 551 552 /* The SDL implementation of iconv() returns these error codes */ 553 #define SDL_ICONV_ERROR (size_t)-1 554 #define SDL_ICONV_E2BIG (size_t)-2 555 #define SDL_ICONV_EILSEQ (size_t)-3 556 #define SDL_ICONV_EINVAL (size_t)-4 557 558 /* SDL_iconv_* are now always real symbols/types, not macros or inlined. */ 559 typedef struct _SDL_iconv_t *SDL_iconv_t; 560 extern DECLSPEC SDL_iconv_t SDLCALL SDL_iconv_open(const char *tocode, 561 const char *fromcode); 562 extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd); 563 extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf, 564 size_t * inbytesleft, char **outbuf, 565 size_t * outbytesleft); 566 /** 567 * This function converts a string between encodings in one pass, returning a 568 * string that must be freed with SDL_free() or NULL on error. 569 */ 570 extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode, 571 const char *fromcode, 572 const char *inbuf, 573 size_t inbytesleft); 574 #define SDL_iconv_utf8_locale(S) SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1) 575 #define SDL_iconv_utf8_ucs2(S) (Uint16 *)SDL_iconv_string("UCS-2-INTERNAL", "UTF-8", S, SDL_strlen(S)+1) 576 #define SDL_iconv_utf8_ucs4(S) (Uint32 *)SDL_iconv_string("UCS-4-INTERNAL", "UTF-8", S, SDL_strlen(S)+1) 577 578 /* force builds using Clang's static analysis tools to use literal C runtime 579 here, since there are possibly tests that are ineffective otherwise. */ 580 #if defined(__clang_analyzer__) && !defined(SDL_DISABLE_ANALYZE_MACROS) 581 582 /* The analyzer knows about strlcpy even when the system doesn't provide it */ 583 #ifndef HAVE_STRLCPY 584 size_t strlcpy(char* dst, const char* src, size_t size); 585 #endif 586 587 /* The analyzer knows about strlcat even when the system doesn't provide it */ 588 #ifndef HAVE_STRLCAT 589 size_t strlcat(char* dst, const char* src, size_t size); 590 #endif 591 592 #define SDL_malloc malloc 593 #define SDL_calloc calloc 594 #define SDL_realloc realloc 595 #define SDL_free free 596 #define SDL_memset memset 597 #define SDL_memcpy memcpy 598 #define SDL_memmove memmove 599 #define SDL_memcmp memcmp 600 #define SDL_strlcpy strlcpy 601 #define SDL_strlcat strlcat 602 #define SDL_strlen strlen 603 #define SDL_wcslen wcslen 604 #define SDL_wcslcpy wcslcpy 605 #define SDL_wcslcat wcslcat 606 #define SDL_strdup strdup 607 #define SDL_wcsdup wcsdup 608 #define SDL_strchr strchr 609 #define SDL_strrchr strrchr 610 #define SDL_strstr strstr 611 #define SDL_wcsstr wcsstr 612 #define SDL_strtokr strtok_r 613 #define SDL_strcmp strcmp 614 #define SDL_wcscmp wcscmp 615 #define SDL_strncmp strncmp 616 #define SDL_wcsncmp wcsncmp 617 #define SDL_strcasecmp strcasecmp 618 #define SDL_strncasecmp strncasecmp 619 #define SDL_sscanf sscanf 620 #define SDL_vsscanf vsscanf 621 #define SDL_snprintf snprintf 622 #define SDL_vsnprintf vsnprintf 623 #endif 624 625 SDL_FORCE_INLINE void *SDL_memcpy4(SDL_OUT_BYTECAP(dwords*4) void *dst, SDL_IN_BYTECAP(dwords*4) const void *src, size_t dwords) 626 { 627 return SDL_memcpy(dst, src, dwords * 4); 628 } 629 630 /* Ends C function definitions when using C++ */ 631 #ifdef __cplusplus 632 } 633 #endif 634 #include "close_code.h" 635 636 #endif /* SDL_stdinc_h_ */ 637 638 /* vi: set ts=4 sw=4 expandtab: */ 639