1 /* 2 Simple DirectMedia Layer 3 Copyright (C) 1997-2014 Sam Lantinga <slouken (at) 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 #if defined(HAVE_INTTYPES_H) 66 # include <inttypes.h> 67 #elif defined(HAVE_STDINT_H) 68 # include <stdint.h> 69 #endif 70 #ifdef HAVE_CTYPE_H 71 # include <ctype.h> 72 #endif 73 #ifdef HAVE_MATH_H 74 # if defined(__WINRT__) 75 /* Defining _USE_MATH_DEFINES is required to get M_PI to be defined on 76 WinRT. See http://msdn.microsoft.com/en-us/library/4hwaceh6.aspx 77 for more information. 78 */ 79 # define _USE_MATH_DEFINES 80 # endif 81 # include <math.h> 82 #endif 83 #ifdef HAVE_FLOAT_H 84 # include <float.h> 85 #endif 86 #if defined(HAVE_ICONV) && defined(HAVE_ICONV_H) 87 # include <iconv.h> 88 #endif 89 90 /** 91 * The number of elements in an array. 92 */ 93 #define SDL_arraysize(array) (sizeof(array)/sizeof(array[0])) 94 #define SDL_TABLESIZE(table) SDL_arraysize(table) 95 96 /** 97 * \name Cast operators 98 * 99 * Use proper C++ casts when compiled as C++ to be compatible with the option 100 * -Wold-style-cast of GCC (and -Werror=old-style-cast in GCC 4.2 and above). 101 */ 102 /* @{ */ 103 #ifdef __cplusplus 104 #define SDL_reinterpret_cast(type, expression) reinterpret_cast<type>(expression) 105 #define SDL_static_cast(type, expression) static_cast<type>(expression) 106 #define SDL_const_cast(type, expression) const_cast<type>(expression) 107 #else 108 #define SDL_reinterpret_cast(type, expression) ((type)(expression)) 109 #define SDL_static_cast(type, expression) ((type)(expression)) 110 #define SDL_const_cast(type, expression) ((type)(expression)) 111 #endif 112 /* @} *//* Cast operators */ 113 114 /* Define a four character code as a Uint32 */ 115 #define SDL_FOURCC(A, B, C, D) \ 116 ((SDL_static_cast(Uint32, SDL_static_cast(Uint8, (A))) << 0) | \ 117 (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (B))) << 8) | \ 118 (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (C))) << 16) | \ 119 (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (D))) << 24)) 120 121 /** 122 * \name Basic data types 123 */ 124 /* @{ */ 125 126 typedef enum 127 { 128 SDL_FALSE = 0, 129 SDL_TRUE = 1 130 } SDL_bool; 131 132 /** 133 * \brief A signed 8-bit integer type. 134 */ 135 typedef int8_t Sint8; 136 /** 137 * \brief An unsigned 8-bit integer type. 138 */ 139 typedef uint8_t Uint8; 140 /** 141 * \brief A signed 16-bit integer type. 142 */ 143 typedef int16_t Sint16; 144 /** 145 * \brief An unsigned 16-bit integer type. 146 */ 147 typedef uint16_t Uint16; 148 /** 149 * \brief A signed 32-bit integer type. 150 */ 151 typedef int32_t Sint32; 152 /** 153 * \brief An unsigned 32-bit integer type. 154 */ 155 typedef uint32_t Uint32; 156 157 /** 158 * \brief A signed 64-bit integer type. 159 */ 160 typedef int64_t Sint64; 161 /** 162 * \brief An unsigned 64-bit integer type. 163 */ 164 typedef uint64_t Uint64; 165 166 /* @} *//* Basic data types */ 167 168 169 #define SDL_COMPILE_TIME_ASSERT(name, x) \ 170 typedef int SDL_dummy_ ## name[(x) * 2 - 1] 171 /** \cond */ 172 #ifndef DOXYGEN_SHOULD_IGNORE_THIS 173 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1); 174 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1); 175 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2); 176 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2); 177 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4); 178 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4); 179 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8); 180 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8); 181 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */ 182 /** \endcond */ 183 184 /* Check to make sure enums are the size of ints, for structure packing. 185 For both Watcom C/C++ and Borland C/C++ the compiler option that makes 186 enums having the size of an int must be enabled. 187 This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11). 188 */ 189 190 /** \cond */ 191 #ifndef DOXYGEN_SHOULD_IGNORE_THIS 192 #if !defined(__ANDROID__) 193 /* TODO: include/SDL_stdinc.h:174: error: size of array 'SDL_dummy_enum' is negative */ 194 typedef enum 195 { 196 DUMMY_ENUM_VALUE 197 } SDL_DUMMY_ENUM; 198 199 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int)); 200 #endif 201 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */ 202 /** \endcond */ 203 204 #include "begin_code.h" 205 /* Set up for C function definitions, even when using C++ */ 206 #ifdef __cplusplus 207 extern "C" { 208 #endif 209 210 #if defined(HAVE_ALLOCA) && !defined(alloca) 211 # if defined(HAVE_ALLOCA_H) 212 # include <alloca.h> 213 # elif defined(__GNUC__) 214 # define alloca __builtin_alloca 215 # elif defined(_MSC_VER) 216 # include <malloc.h> 217 # define alloca _alloca 218 # elif defined(__WATCOMC__) 219 # include <malloc.h> 220 # elif defined(__BORLANDC__) 221 # include <malloc.h> 222 # elif defined(__DMC__) 223 # include <stdlib.h> 224 # elif defined(__AIX__) 225 #pragma alloca 226 # elif defined(__MRC__) 227 void *alloca(unsigned); 228 # else 229 char *alloca(); 230 # endif 231 #endif 232 #ifdef HAVE_ALLOCA 233 #define SDL_stack_alloc(type, count) (type*)alloca(sizeof(type)*(count)) 234 #define SDL_stack_free(data) 235 #else 236 #define SDL_stack_alloc(type, count) (type*)SDL_malloc(sizeof(type)*(count)) 237 #define SDL_stack_free(data) SDL_free(data) 238 #endif 239 240 extern DECLSPEC void *SDLCALL SDL_malloc(size_t size); 241 extern DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size); 242 extern DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size); 243 extern DECLSPEC void SDLCALL SDL_free(void *mem); 244 245 extern DECLSPEC char *SDLCALL SDL_getenv(const char *name); 246 extern DECLSPEC int SDLCALL SDL_setenv(const char *name, const char *value, int overwrite); 247 248 extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size, int (*compare) (const void *, const void *)); 249 250 extern DECLSPEC int SDLCALL SDL_abs(int x); 251 252 /* !!! FIXME: these have side effects. You probably shouldn't use them. */ 253 /* !!! FIXME: Maybe we do forceinline functions of SDL_mini, SDL_minf, etc? */ 254 #define SDL_min(x, y) (((x) < (y)) ? (x) : (y)) 255 #define SDL_max(x, y) (((x) > (y)) ? (x) : (y)) 256 257 extern DECLSPEC int SDLCALL SDL_isdigit(int x); 258 extern DECLSPEC int SDLCALL SDL_isspace(int x); 259 extern DECLSPEC int SDLCALL SDL_toupper(int x); 260 extern DECLSPEC int SDLCALL SDL_tolower(int x); 261 262 extern DECLSPEC void *SDLCALL SDL_memset(void *dst, int c, size_t len); 263 264 #define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x))) 265 #define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x))) 266 267 /* Note that memset() is a byte assignment and this is a 32-bit assignment, so they're not directly equivalent. */ 268 SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords) 269 { 270 #if defined(__GNUC__) && defined(i386) 271 int u0, u1, u2; 272 __asm__ __volatile__ ( 273 "cld \n\t" 274 "rep ; stosl \n\t" 275 : "=&D" (u0), "=&a" (u1), "=&c" (u2) 276 : "0" (dst), "1" (val), "2" (SDL_static_cast(Uint32, dwords)) 277 : "memory" 278 ); 279 #else 280 size_t _n = (dwords + 3) / 4; 281 Uint32 *_p = SDL_static_cast(Uint32 *, dst); 282 Uint32 _val = (val); 283 if (dwords == 0) 284 return; 285 switch (dwords % 4) 286 { 287 case 0: do { *_p++ = _val; 288 case 3: *_p++ = _val; 289 case 2: *_p++ = _val; 290 case 1: *_p++ = _val; 291 } while ( --_n ); 292 } 293 #endif 294 } 295 296 297 extern DECLSPEC void *SDLCALL SDL_memcpy(void *dst, const void *src, size_t len); 298 299 SDL_FORCE_INLINE void *SDL_memcpy4(void *dst, const void *src, size_t dwords) 300 { 301 return SDL_memcpy(dst, src, dwords * 4); 302 } 303 304 extern DECLSPEC void *SDLCALL SDL_memmove(void *dst, const void *src, size_t len); 305 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len); 306 307 extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr); 308 extern DECLSPEC size_t SDLCALL SDL_wcslcpy(wchar_t *dst, const wchar_t *src, size_t maxlen); 309 extern DECLSPEC size_t SDLCALL SDL_wcslcat(wchar_t *dst, const wchar_t *src, size_t maxlen); 310 311 extern DECLSPEC size_t SDLCALL SDL_strlen(const char *str); 312 extern DECLSPEC size_t SDLCALL SDL_strlcpy(char *dst, const char *src, size_t maxlen); 313 extern DECLSPEC size_t SDLCALL SDL_utf8strlcpy(char *dst, const char *src, size_t dst_bytes); 314 extern DECLSPEC size_t SDLCALL SDL_strlcat(char *dst, const char *src, size_t maxlen); 315 extern DECLSPEC char *SDLCALL SDL_strdup(const char *str); 316 extern DECLSPEC char *SDLCALL SDL_strrev(char *str); 317 extern DECLSPEC char *SDLCALL SDL_strupr(char *str); 318 extern DECLSPEC char *SDLCALL SDL_strlwr(char *str); 319 extern DECLSPEC char *SDLCALL SDL_strchr(const char *str, int c); 320 extern DECLSPEC char *SDLCALL SDL_strrchr(const char *str, int c); 321 extern DECLSPEC char *SDLCALL SDL_strstr(const char *haystack, const char *needle); 322 323 extern DECLSPEC char *SDLCALL SDL_itoa(int value, char *str, int radix); 324 extern DECLSPEC char *SDLCALL SDL_uitoa(unsigned int value, char *str, int radix); 325 extern DECLSPEC char *SDLCALL SDL_ltoa(long value, char *str, int radix); 326 extern DECLSPEC char *SDLCALL SDL_ultoa(unsigned long value, char *str, int radix); 327 extern DECLSPEC char *SDLCALL SDL_lltoa(Sint64 value, char *str, int radix); 328 extern DECLSPEC char *SDLCALL SDL_ulltoa(Uint64 value, char *str, int radix); 329 330 extern DECLSPEC int SDLCALL SDL_atoi(const char *str); 331 extern DECLSPEC double SDLCALL SDL_atof(const char *str); 332 extern DECLSPEC long SDLCALL SDL_strtol(const char *str, char **endp, int base); 333 extern DECLSPEC unsigned long SDLCALL SDL_strtoul(const char *str, char **endp, int base); 334 extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *str, char **endp, int base); 335 extern DECLSPEC Uint64 SDLCALL SDL_strtoull(const char *str, char **endp, int base); 336 extern DECLSPEC double SDLCALL SDL_strtod(const char *str, char **endp); 337 338 extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2); 339 extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2, size_t maxlen); 340 extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1, const char *str2); 341 extern DECLSPEC int SDLCALL SDL_strncasecmp(const char *str1, const char *str2, size_t len); 342 343 extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, const char *fmt, ...); 344 extern DECLSPEC int SDLCALL SDL_vsscanf(const char *text, const char *fmt, va_list ap); 345 extern DECLSPEC int SDLCALL SDL_snprintf(char *text, size_t maxlen, const char *fmt, ...); 346 extern DECLSPEC int SDLCALL SDL_vsnprintf(char *text, size_t maxlen, const char *fmt, va_list ap); 347 348 #ifndef HAVE_M_PI 349 #ifndef M_PI 350 #define M_PI 3.14159265358979323846264338327950288 /* pi */ 351 #endif 352 #endif 353 354 extern DECLSPEC double SDLCALL SDL_acos(double x); 355 extern DECLSPEC double SDLCALL SDL_asin(double x); 356 extern DECLSPEC double SDLCALL SDL_atan(double x); 357 extern DECLSPEC double SDLCALL SDL_atan2(double x, double y); 358 extern DECLSPEC double SDLCALL SDL_ceil(double x); 359 extern DECLSPEC double SDLCALL SDL_copysign(double x, double y); 360 extern DECLSPEC double SDLCALL SDL_cos(double x); 361 extern DECLSPEC float SDLCALL SDL_cosf(float x); 362 extern DECLSPEC double SDLCALL SDL_fabs(double x); 363 extern DECLSPEC double SDLCALL SDL_floor(double x); 364 extern DECLSPEC double SDLCALL SDL_log(double x); 365 extern DECLSPEC double SDLCALL SDL_pow(double x, double y); 366 extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n); 367 extern DECLSPEC double SDLCALL SDL_sin(double x); 368 extern DECLSPEC float SDLCALL SDL_sinf(float x); 369 extern DECLSPEC double SDLCALL SDL_sqrt(double x); 370 371 /* The SDL implementation of iconv() returns these error codes */ 372 #define SDL_ICONV_ERROR (size_t)-1 373 #define SDL_ICONV_E2BIG (size_t)-2 374 #define SDL_ICONV_EILSEQ (size_t)-3 375 #define SDL_ICONV_EINVAL (size_t)-4 376 377 /* SDL_iconv_* are now always real symbols/types, not macros or inlined. */ 378 typedef struct _SDL_iconv_t *SDL_iconv_t; 379 extern DECLSPEC SDL_iconv_t SDLCALL SDL_iconv_open(const char *tocode, 380 const char *fromcode); 381 extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd); 382 extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf, 383 size_t * inbytesleft, char **outbuf, 384 size_t * outbytesleft); 385 /** 386 * This function converts a string between encodings in one pass, returning a 387 * string that must be freed with SDL_free() or NULL on error. 388 */ 389 extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode, 390 const char *fromcode, 391 const char *inbuf, 392 size_t inbytesleft); 393 #define SDL_iconv_utf8_locale(S) SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1) 394 #define SDL_iconv_utf8_ucs2(S) (Uint16 *)SDL_iconv_string("UCS-2-INTERNAL", "UTF-8", S, SDL_strlen(S)+1) 395 #define SDL_iconv_utf8_ucs4(S) (Uint32 *)SDL_iconv_string("UCS-4-INTERNAL", "UTF-8", S, SDL_strlen(S)+1) 396 397 /* Ends C function definitions when using C++ */ 398 #ifdef __cplusplus 399 } 400 #endif 401 #include "close_code.h" 402 403 #endif /* _SDL_stdinc_h */ 404 405 /* vi: set ts=4 sw=4 expandtab: */ 406
