include/SDL_stdinc.h
author Ozkan Sezer <sezeroz@gmail.com>
Sat, 14 Sep 2019 17:00:50 +0300
branchSDL-1.2
changeset 13077 cd46eb772bee
parent 12050 f68904a749c9
permissions -rw-r--r--
make SDL_qsort.c to actually link (missing SDL_stdinc.h include)

also sync its comments with version 1.15 from mainstream
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2012 Sam Lantinga
     4 
     5     This library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Lesser General Public
     7     License as published by the Free Software Foundation; either
     8     version 2.1 of the License, or (at your option) any later version.
     9 
    10     This library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Lesser General Public License for more details.
    14 
    15     You should have received a copy of the GNU Lesser General Public
    16     License along with this library; if not, write to the Free Software
    17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
    18 
    19     Sam Lantinga
    20     slouken@libsdl.org
    21 */
    22 
    23 /** @file SDL_stdinc.h
    24  *  This is a general header that includes C language support
    25  */
    26 
    27 #ifndef _SDL_stdinc_h
    28 #define _SDL_stdinc_h
    29 
    30 #include "SDL_config.h"
    31 
    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 #if defined(HAVE_ICONV) && defined(HAVE_ICONV_H)
    74 # include <iconv.h>
    75 #endif
    76 #if defined(HAVE_ALLOCA) && !defined(alloca)
    77 # if defined(HAVE_ALLOCA_H)
    78 #  include <alloca.h>
    79 # elif defined(__GNUC__)
    80 #  define alloca __builtin_alloca
    81 # elif defined(_MSC_VER)
    82 #  include <malloc.h>
    83 #  define alloca _alloca
    84 # elif defined(__WATCOMC__)
    85 #  include <malloc.h>
    86 # elif defined(__BORLANDC__)
    87 #  include <malloc.h>
    88 # elif defined(__DMC__)
    89 #  include <stdlib.h>
    90 # elif defined(__AIX__)
    91   #pragma alloca
    92 # elif defined(__MRC__)
    93    void *alloca (unsigned);
    94 # else
    95    char *alloca ();
    96 # endif
    97 #endif
    98 
    99 /** The number of elements in an array */
   100 #define SDL_arraysize(array)	(sizeof(array)/sizeof(array[0]))
   101 #define SDL_TABLESIZE(table)	SDL_arraysize(table)
   102 
   103 /* Use proper C++ casts when compiled as C++ to be compatible with the option
   104  -Wold-style-cast of GCC (and -Werror=old-style-cast in GCC 4.2 and above. */
   105 #ifdef __cplusplus
   106 #define SDL_reinterpret_cast(type, expression) reinterpret_cast<type>(expression)
   107 #define SDL_static_cast(type, expression) static_cast<type>(expression)
   108 #else
   109 #define SDL_reinterpret_cast(type, expression) ((type)(expression))
   110 #define SDL_static_cast(type, expression) ((type)(expression))
   111 #endif
   112 
   113 /** @name Basic data types */
   114 /*@{*/
   115 typedef enum {
   116 	SDL_FALSE = 0,
   117 	SDL_TRUE  = 1
   118 } SDL_bool;
   119 
   120 typedef int8_t		Sint8;
   121 typedef uint8_t		Uint8;
   122 typedef int16_t		Sint16;
   123 typedef uint16_t	Uint16;
   124 typedef int32_t		Sint32;
   125 typedef uint32_t	Uint32;
   126 
   127 #ifdef SDL_HAS_64BIT_TYPE
   128 typedef int64_t		Sint64;
   129 #ifndef SYMBIAN32_GCCE
   130 typedef uint64_t	Uint64;
   131 #endif
   132 #else
   133 /* This is really just a hack to prevent the compiler from complaining */
   134 typedef struct {
   135 	Uint32 hi;
   136 	Uint32 lo;
   137 } Uint64, Sint64;
   138 #endif
   139 
   140 /*@}*/
   141 
   142 /** @name Make sure the types really have the right sizes */
   143 /*@{*/
   144 #define SDL_COMPILE_TIME_ASSERT(name, x)               \
   145        typedef int SDL_dummy_ ## name[(x) * 2 - 1]
   146 
   147 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
   148 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
   149 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
   150 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
   151 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
   152 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
   153 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
   154 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
   155 /*@}*/
   156 
   157 /** @name Enum Size Check
   158  *  Check to make sure enums are the size of ints, for structure packing.
   159  *  For both Watcom C/C++ and Borland C/C++ the compiler option that makes
   160  *  enums having the size of an int must be enabled.
   161  *  This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
   162  */
   163 /* Enable enums always int in CodeWarrior (for MPW use "-enum int") */
   164 #ifdef __MWERKS__
   165 #pragma enumsalwaysint on
   166 #endif
   167 
   168 typedef enum {
   169 	DUMMY_ENUM_VALUE
   170 } SDL_DUMMY_ENUM;
   171 
   172 #ifndef __NDS__
   173 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
   174 #endif
   175 /*@}*/
   176 
   177 #include "begin_code.h"
   178 /* Set up for C function definitions, even when using C++ */
   179 #ifdef __cplusplus
   180 extern "C" {
   181 #endif
   182 
   183 #ifdef HAVE_MALLOC
   184 #define SDL_malloc	malloc
   185 #else
   186 extern DECLSPEC void * SDLCALL SDL_malloc(size_t size);
   187 #endif
   188 
   189 #ifdef HAVE_CALLOC
   190 #define SDL_calloc	calloc
   191 #else
   192 extern DECLSPEC void * SDLCALL SDL_calloc(size_t nmemb, size_t size);
   193 #endif
   194 
   195 #ifdef HAVE_REALLOC
   196 #define SDL_realloc	realloc
   197 #else
   198 extern DECLSPEC void * SDLCALL SDL_realloc(void *mem, size_t size);
   199 #endif
   200 
   201 #ifdef HAVE_FREE
   202 #define SDL_free	free
   203 #else
   204 extern DECLSPEC void SDLCALL SDL_free(void *mem);
   205 #endif
   206 
   207 #ifdef HAVE_ALLOCA
   208 #define SDL_stack_alloc(type, count)    (type*)alloca(sizeof(type)*(count))
   209 #define SDL_stack_free(data)
   210 #else
   211 #define SDL_stack_alloc(type, count)    (type*)SDL_malloc(sizeof(type)*(count))
   212 #define SDL_stack_free(data)            SDL_free(data)
   213 #endif
   214 
   215 #ifdef HAVE_GETENV
   216 #define SDL_getenv	getenv
   217 #else
   218 extern DECLSPEC char * SDLCALL SDL_getenv(const char *name);
   219 #endif
   220 
   221 #ifdef HAVE_PUTENV
   222 #define SDL_putenv	putenv
   223 #else
   224 extern DECLSPEC int SDLCALL SDL_putenv(const char *variable);
   225 #endif
   226 
   227 #ifdef HAVE_QSORT
   228 #define SDL_qsort	qsort
   229 #else
   230 extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size,
   231            int (*compare)(const void *, const void *));
   232 #endif
   233 
   234 #ifdef HAVE_ABS
   235 #define SDL_abs		abs
   236 #else
   237 #define SDL_abs(X)	((X) < 0 ? -(X) : (X))
   238 #endif
   239 
   240 #define SDL_min(x, y)	(((x) < (y)) ? (x) : (y))
   241 #define SDL_max(x, y)	(((x) > (y)) ? (x) : (y))
   242 
   243 #ifdef HAVE_CTYPE_H
   244 #define SDL_isdigit(X)  isdigit(X)
   245 #define SDL_isspace(X)  isspace(X)
   246 #define SDL_toupper(X)  toupper(X)
   247 #define SDL_tolower(X)  tolower(X)
   248 #else
   249 #define SDL_isdigit(X)  (((X) >= '0') && ((X) <= '9'))
   250 #define SDL_isspace(X)  (((X) == ' ') || ((X) == '\t') || ((X) == '\r') || ((X) == '\n'))
   251 #define SDL_toupper(X)  (((X) >= 'a') && ((X) <= 'z') ? ('A'+((X)-'a')) : (X))
   252 #define SDL_tolower(X)  (((X) >= 'A') && ((X) <= 'Z') ? ('a'+((X)-'A')) : (X))
   253 #endif
   254 
   255 #ifdef HAVE_MEMSET
   256 #define SDL_memset      memset
   257 #else
   258 extern DECLSPEC void * SDLCALL SDL_memset(void *dst, int c, size_t len);
   259 #endif
   260 
   261 #if defined(__GNUC__) && defined(i386)
   262 #define SDL_memset4(dst, val, len)				\
   263 do {								\
   264 	int u0, u1, u2;						\
   265 	__asm__ __volatile__ (					\
   266 		"cld\n\t"					\
   267 		"rep ; stosl\n\t"				\
   268 		: "=&D" (u0), "=&a" (u1), "=&c" (u2)		\
   269 		: "0" (dst), "1" (val), "2" (SDL_static_cast(Uint32, len))	\
   270 		: "memory" );					\
   271 } while(0)
   272 #endif
   273 #ifndef SDL_memset4
   274 #define SDL_memset4(dst, val, len)		\
   275 do {						\
   276 	unsigned _count = (len);		\
   277 	unsigned _n = (_count + 3) / 4;		\
   278 	Uint32 *_p = SDL_static_cast(Uint32 *, dst);	\
   279 	Uint32 _val = (val);			\
   280 	if (len == 0) break;			\
   281         switch (_count % 4) {			\
   282         case 0: do {    *_p++ = _val;		\
   283         case 3:         *_p++ = _val;		\
   284         case 2:         *_p++ = _val;		\
   285         case 1:         *_p++ = _val;		\
   286 		} while ( --_n );		\
   287 	}					\
   288 } while(0)
   289 #endif
   290 
   291 /* We can count on memcpy existing on Mac OS X and being well-tuned. */
   292 #if defined(__MACH__) && defined(__APPLE__)
   293 #define SDL_memcpy(dst, src, len) memcpy(dst, src, len)
   294 #elif defined(__GNUC__) && defined(i386)
   295 #define SDL_memcpy(dst, src, len)					  \
   296 do {									  \
   297 	int u0, u1, u2;						  	  \
   298 	__asm__ __volatile__ (						  \
   299 		"cld\n\t"						  \
   300 		"rep ; movsl\n\t"					  \
   301 		"testb $2,%b4\n\t"					  \
   302 		"je 1f\n\t"						  \
   303 		"movsw\n"						  \
   304 		"1:\ttestb $1,%b4\n\t"					  \
   305 		"je 2f\n\t"						  \
   306 		"movsb\n"						  \
   307 		"2:"							  \
   308 		: "=&c" (u0), "=&D" (u1), "=&S" (u2)			  \
   309 		: "0" (SDL_static_cast(unsigned, len)/4), "q" (len), "1" (dst),"2" (src) \
   310 		: "memory" );						  \
   311 } while(0)
   312 #endif
   313 #ifndef SDL_memcpy
   314 #ifdef HAVE_MEMCPY
   315 #define SDL_memcpy      memcpy
   316 #elif defined(HAVE_BCOPY)
   317 #define SDL_memcpy(d, s, n)	bcopy((s), (d), (n))
   318 #else
   319 extern DECLSPEC void * SDLCALL SDL_memcpy(void *dst, const void *src, size_t len);
   320 #endif
   321 #endif
   322 
   323 /* We can count on memcpy existing on Mac OS X and being well-tuned. */
   324 #if defined(__MACH__) && defined(__APPLE__)
   325 #define SDL_memcpy4(dst, src, len) memcpy(dst, src, (len)*4)
   326 #elif defined(__GNUC__) && defined(i386)
   327 #define SDL_memcpy4(dst, src, len)				\
   328 do {								\
   329 	int ecx, edi, esi;					\
   330 	__asm__ __volatile__ (					\
   331 		"cld\n\t"					\
   332 		"rep ; movsl"					\
   333 		: "=&c" (ecx), "=&D" (edi), "=&S" (esi)		\
   334 		: "0" (SDL_static_cast(unsigned, len)), "1" (dst), "2" (src)	\
   335 		: "memory" );					\
   336 } while(0)
   337 #endif
   338 #ifndef SDL_memcpy4
   339 #define SDL_memcpy4(dst, src, len)	SDL_memcpy(dst, src, (len) << 2)
   340 #endif
   341 
   342 #if defined(__GNUC__) && defined(i386)
   343 #define SDL_revcpy(dst, src, len)			\
   344 do {							\
   345 	int u0, u1, u2;					\
   346 	char *dstp = SDL_static_cast(char *, dst);	\
   347 	char *srcp = SDL_static_cast(char *, src);	\
   348 	int n = (len);					\
   349 	if ( n >= 4 ) {					\
   350 	__asm__ __volatile__ (				\
   351 		"std\n\t"				\
   352 		"rep ; movsl\n\t"			\
   353 		"cld\n\t"				\
   354 		: "=&c" (u0), "=&D" (u1), "=&S" (u2)	\
   355 		: "0" (n >> 2),				\
   356 		  "1" (dstp+(n-4)), "2" (srcp+(n-4))	\
   357 		: "memory" );				\
   358 	}						\
   359 	switch (n & 3) {				\
   360 		case 3: dstp[2] = srcp[2];		\
   361 		case 2: dstp[1] = srcp[1];		\
   362 		case 1: dstp[0] = srcp[0];		\
   363 			break;				\
   364 		default:				\
   365 			break;				\
   366 	}						\
   367 } while(0)
   368 #endif
   369 #ifndef SDL_revcpy
   370 extern DECLSPEC void * SDLCALL SDL_revcpy(void *dst, const void *src, size_t len);
   371 #endif
   372 
   373 #ifdef HAVE_MEMMOVE
   374 #define SDL_memmove     memmove
   375 #elif defined(HAVE_BCOPY)
   376 #define SDL_memmove(d, s, n)	bcopy((s), (d), (n))
   377 #else
   378 #define SDL_memmove(dst, src, len)			\
   379 do {							\
   380 	if ( dst < src ) {				\
   381 		SDL_memcpy(dst, src, len);		\
   382 	} else {					\
   383 		SDL_revcpy(dst, src, len);		\
   384 	}						\
   385 } while(0)
   386 #endif
   387 
   388 #ifdef HAVE_MEMCMP
   389 #define SDL_memcmp      memcmp
   390 #else
   391 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
   392 #endif
   393 
   394 #ifdef HAVE_STRLEN
   395 #define SDL_strlen      strlen
   396 #else
   397 extern DECLSPEC size_t SDLCALL SDL_strlen(const char *string);
   398 #endif
   399 
   400 #ifdef HAVE_STRLCPY
   401 #define SDL_strlcpy     strlcpy
   402 #else
   403 extern DECLSPEC size_t SDLCALL SDL_strlcpy(char *dst, const char *src, size_t maxlen);
   404 #endif
   405 
   406 #ifdef HAVE_STRLCAT
   407 #define SDL_strlcat    strlcat
   408 #else
   409 extern DECLSPEC size_t SDLCALL SDL_strlcat(char *dst, const char *src, size_t maxlen);
   410 #endif
   411 
   412 #ifdef HAVE_STRDUP
   413 #define SDL_strdup     strdup
   414 #else
   415 extern DECLSPEC char * SDLCALL SDL_strdup(const char *string);
   416 #endif
   417 
   418 #ifdef HAVE__STRREV
   419 #define SDL_strrev      _strrev
   420 #else
   421 extern DECLSPEC char * SDLCALL SDL_strrev(char *string);
   422 #endif
   423 
   424 #ifdef HAVE__STRUPR
   425 #define SDL_strupr      _strupr
   426 #else
   427 extern DECLSPEC char * SDLCALL SDL_strupr(char *string);
   428 #endif
   429 
   430 #ifdef HAVE__STRLWR
   431 #define SDL_strlwr      _strlwr
   432 #else
   433 extern DECLSPEC char * SDLCALL SDL_strlwr(char *string);
   434 #endif
   435 
   436 #ifdef HAVE_STRCHR
   437 #define SDL_strchr      strchr
   438 #elif defined(HAVE_INDEX)
   439 #define SDL_strchr      index
   440 #else
   441 extern DECLSPEC char * SDLCALL SDL_strchr(const char *string, int c);
   442 #endif
   443 
   444 #ifdef HAVE_STRRCHR
   445 #define SDL_strrchr     strrchr
   446 #elif defined(HAVE_RINDEX)
   447 #define SDL_strrchr     rindex
   448 #else
   449 extern DECLSPEC char * SDLCALL SDL_strrchr(const char *string, int c);
   450 #endif
   451 
   452 #ifdef HAVE_STRSTR
   453 #define SDL_strstr      strstr
   454 #else
   455 extern DECLSPEC char * SDLCALL SDL_strstr(const char *haystack, const char *needle);
   456 #endif
   457 
   458 #ifdef HAVE_ITOA
   459 #define SDL_itoa        itoa
   460 #else
   461 #define SDL_itoa(value, string, radix)	SDL_ltoa((long)value, string, radix)
   462 #endif
   463 
   464 #ifdef HAVE__LTOA
   465 #define SDL_ltoa        _ltoa
   466 #else
   467 extern DECLSPEC char * SDLCALL SDL_ltoa(long value, char *string, int radix);
   468 #endif
   469 
   470 #ifdef HAVE__UITOA
   471 #define SDL_uitoa       _uitoa
   472 #else
   473 #define SDL_uitoa(value, string, radix)	SDL_ultoa((long)value, string, radix)
   474 #endif
   475 
   476 #ifdef HAVE__ULTOA
   477 #define SDL_ultoa       _ultoa
   478 #else
   479 extern DECLSPEC char * SDLCALL SDL_ultoa(unsigned long value, char *string, int radix);
   480 #endif
   481 
   482 #ifdef HAVE_STRTOL
   483 #define SDL_strtol      strtol
   484 #else
   485 extern DECLSPEC long SDLCALL SDL_strtol(const char *string, char **endp, int base);
   486 #endif
   487 
   488 #ifdef HAVE_STRTOUL
   489 #define SDL_strtoul      strtoul
   490 #else
   491 extern DECLSPEC unsigned long SDLCALL SDL_strtoul(const char *string, char **endp, int base);
   492 #endif
   493 
   494 #ifdef SDL_HAS_64BIT_TYPE
   495 
   496 #ifdef HAVE__I64TOA
   497 #define SDL_lltoa       _i64toa
   498 #else
   499 extern DECLSPEC char* SDLCALL SDL_lltoa(Sint64 value, char *string, int radix);
   500 #endif
   501 
   502 #ifdef HAVE__UI64TOA
   503 #define SDL_ulltoa      _ui64toa
   504 #else
   505 extern DECLSPEC char* SDLCALL SDL_ulltoa(Uint64 value, char *string, int radix);
   506 #endif
   507 
   508 #ifdef HAVE__STRTOI64
   509 #define SDL_strtoll    _strtoi64
   510 #elif defined(HAVE_STRTOLL)
   511 #define SDL_strtoll     strtoll
   512 #else
   513 extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *string, char **endp, int base);
   514 #endif
   515 
   516 #ifdef HAVE__STRTOUI64
   517 #define SDL_strtoull    _strtoui64
   518 #elif defined(HAVE_STRTOULL)
   519 #define SDL_strtoull     strtoull
   520 #else
   521 extern DECLSPEC Uint64 SDLCALL SDL_strtoull(const char *string, char **endp, int base);
   522 #endif
   523 
   524 #endif /* SDL_HAS_64BIT_TYPE */
   525 
   526 #ifdef HAVE_STRTOD
   527 #define SDL_strtod      strtod
   528 #else
   529 extern DECLSPEC double SDLCALL SDL_strtod(const char *string, char **endp);
   530 #endif
   531 
   532 #ifdef HAVE_ATOI
   533 #define SDL_atoi        atoi
   534 #else
   535 #define SDL_atoi(X)     SDL_strtol(X, NULL, 0)
   536 #endif
   537 
   538 #ifdef HAVE_ATOF
   539 #define SDL_atof        atof
   540 #else
   541 #define SDL_atof(X)     SDL_strtod(X, NULL)
   542 #endif
   543 
   544 #ifdef HAVE_STRCMP
   545 #define SDL_strcmp      strcmp
   546 #else
   547 extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2);
   548 #endif
   549 
   550 #ifdef HAVE_STRNCMP
   551 #define SDL_strncmp     strncmp
   552 #else
   553 extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2, size_t maxlen);
   554 #endif
   555 
   556 #if defined(HAVE__STRICMP)
   557 #define SDL_strcasecmp  _stricmp
   558 #elif defined(HAVE_STRCASECMP)
   559 #define SDL_strcasecmp  strcasecmp
   560 #else
   561 extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1, const char *str2);
   562 #endif
   563 
   564 #if defined(HAVE__STRNICMP)
   565 #define SDL_strncasecmp _strnicmp
   566 #elif defined(HAVE_STRNCASECMP)
   567 #define SDL_strncasecmp strncasecmp
   568 #else
   569 extern DECLSPEC int SDLCALL SDL_strncasecmp(const char *str1, const char *str2, size_t maxlen);
   570 #endif
   571 
   572 #ifdef HAVE_SSCANF
   573 #define SDL_sscanf      sscanf
   574 #else
   575 extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, const char *fmt, ...);
   576 #endif
   577 
   578 #if defined(HAVE_SNPRINTF) && !(defined(__WATCOMC__) || defined(_WIN32))
   579 #define SDL_snprintf    snprintf
   580 #else
   581 extern DECLSPEC int SDLCALL SDL_snprintf(char *text, size_t maxlen, const char *fmt, ...);
   582 #endif
   583 
   584 #if defined(HAVE_VSNPRINTF) && !(defined(__WATCOMC__) || defined(_WIN32))
   585 #define SDL_vsnprintf   vsnprintf
   586 #else
   587 extern DECLSPEC int SDLCALL SDL_vsnprintf(char *text, size_t maxlen, const char *fmt, va_list ap);
   588 #endif
   589 
   590 /** @name SDL_ICONV Error Codes
   591  *  The SDL implementation of iconv() returns these error codes 
   592  */
   593 /*@{*/
   594 #define SDL_ICONV_ERROR		(size_t)-1
   595 #define SDL_ICONV_E2BIG		(size_t)-2
   596 #define SDL_ICONV_EILSEQ	(size_t)-3
   597 #define SDL_ICONV_EINVAL	(size_t)-4
   598 /*@}*/
   599 
   600 #if defined(HAVE_ICONV) && defined(HAVE_ICONV_H)
   601 #define SDL_iconv_t     iconv_t
   602 #define SDL_iconv_open  iconv_open
   603 #define SDL_iconv_close iconv_close
   604 #else
   605 typedef struct _SDL_iconv_t *SDL_iconv_t;
   606 extern DECLSPEC SDL_iconv_t SDLCALL SDL_iconv_open(const char *tocode, const char *fromcode);
   607 extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
   608 #endif
   609 extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf, size_t *inbytesleft, char **outbuf, size_t *outbytesleft);
   610 /** This function converts a string between encodings in one pass, returning a
   611  *  string that must be freed with SDL_free() or NULL on error.
   612  */
   613 extern DECLSPEC char * SDLCALL SDL_iconv_string(const char *tocode, const char *fromcode, const char *inbuf, size_t inbytesleft);
   614 #define SDL_iconv_utf8_locale(S)	SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1)
   615 #define SDL_iconv_utf8_ucs2(S)		(Uint16 *)SDL_iconv_string("UCS-2", "UTF-8", S, SDL_strlen(S)+1)
   616 #define SDL_iconv_utf8_ucs4(S)		(Uint32 *)SDL_iconv_string("UCS-4", "UTF-8", S, SDL_strlen(S)+1)
   617 
   618 /* Ends C function definitions when using C++ */
   619 #ifdef __cplusplus
   620 }
   621 #endif
   622 #include "close_code.h"
   623 
   624 #endif /* _SDL_stdinc_h */