include/SDL_stdinc.h
author Manuel Alfayate Corchete
Sun, 17 Jan 2021 21:33:51 +0100
changeset 14743 c3b1b429b80b
parent 14640 b2b3343a310d
permissions -rw-r--r--
[KMS/DRM] Fix for bug #5468: corruption on dynamic cursor changing caused by wrong buffer size.
     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 64 bit values.
   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 
   274 /* Annotations to help code analysis tools */
   275 #ifdef SDL_DISABLE_ANALYZE_MACROS
   276 #define SDL_IN_BYTECAP(x)
   277 #define SDL_INOUT_Z_CAP(x)
   278 #define SDL_OUT_Z_CAP(x)
   279 #define SDL_OUT_CAP(x)
   280 #define SDL_OUT_BYTECAP(x)
   281 #define SDL_OUT_Z_BYTECAP(x)
   282 #define SDL_PRINTF_FORMAT_STRING
   283 #define SDL_SCANF_FORMAT_STRING
   284 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
   285 #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
   286 #else
   287 #if defined(_MSC_VER) && (_MSC_VER >= 1600) /* VS 2010 and above */
   288 #include <sal.h>
   289 
   290 #define SDL_IN_BYTECAP(x) _In_bytecount_(x)
   291 #define SDL_INOUT_Z_CAP(x) _Inout_z_cap_(x)
   292 #define SDL_OUT_Z_CAP(x) _Out_z_cap_(x)
   293 #define SDL_OUT_CAP(x) _Out_cap_(x)
   294 #define SDL_OUT_BYTECAP(x) _Out_bytecap_(x)
   295 #define SDL_OUT_Z_BYTECAP(x) _Out_z_bytecap_(x)
   296 
   297 #define SDL_PRINTF_FORMAT_STRING _Printf_format_string_
   298 #define SDL_SCANF_FORMAT_STRING _Scanf_format_string_impl_
   299 #else
   300 #define SDL_IN_BYTECAP(x)
   301 #define SDL_INOUT_Z_CAP(x)
   302 #define SDL_OUT_Z_CAP(x)
   303 #define SDL_OUT_CAP(x)
   304 #define SDL_OUT_BYTECAP(x)
   305 #define SDL_OUT_Z_BYTECAP(x)
   306 #define SDL_PRINTF_FORMAT_STRING
   307 #define SDL_SCANF_FORMAT_STRING
   308 #endif
   309 #if defined(__GNUC__)
   310 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __printf__, fmtargnumber, fmtargnumber+1 )))
   311 #define SDL_SCANF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __scanf__, fmtargnumber, fmtargnumber+1 )))
   312 #else
   313 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
   314 #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
   315 #endif
   316 #endif /* SDL_DISABLE_ANALYZE_MACROS */
   317 
   318 #define SDL_COMPILE_TIME_ASSERT(name, x)               \
   319        typedef int SDL_compile_time_assert_ ## name[(x) * 2 - 1]
   320 /** \cond */
   321 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
   322 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
   323 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
   324 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
   325 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
   326 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
   327 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
   328 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
   329 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
   330 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
   331 /** \endcond */
   332 
   333 /* Check to make sure enums are the size of ints, for structure packing.
   334    For both Watcom C/C++ and Borland C/C++ the compiler option that makes
   335    enums having the size of an int must be enabled.
   336    This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
   337 */
   338 
   339 /** \cond */
   340 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
   341 #if !defined(__ANDROID__)
   342    /* TODO: include/SDL_stdinc.h:174: error: size of array 'SDL_dummy_enum' is negative */
   343 typedef enum
   344 {
   345     DUMMY_ENUM_VALUE
   346 } SDL_DUMMY_ENUM;
   347 
   348 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
   349 #endif
   350 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
   351 /** \endcond */
   352 
   353 #include "begin_code.h"
   354 /* Set up for C function definitions, even when using C++ */
   355 #ifdef __cplusplus
   356 extern "C" {
   357 #endif
   358 
   359 #ifdef HAVE_ALLOCA
   360 #define SDL_stack_alloc(type, count)    (type*)alloca(sizeof(type)*(count))
   361 #define SDL_stack_free(data)
   362 #else
   363 #define SDL_stack_alloc(type, count)    (type*)SDL_malloc(sizeof(type)*(count))
   364 #define SDL_stack_free(data)            SDL_free(data)
   365 #endif
   366 
   367 extern DECLSPEC void *SDLCALL SDL_malloc(size_t size);
   368 extern DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size);
   369 extern DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size);
   370 extern DECLSPEC void SDLCALL SDL_free(void *mem);
   371 
   372 typedef void *(SDLCALL *SDL_malloc_func)(size_t size);
   373 typedef void *(SDLCALL *SDL_calloc_func)(size_t nmemb, size_t size);
   374 typedef void *(SDLCALL *SDL_realloc_func)(void *mem, size_t size);
   375 typedef void (SDLCALL *SDL_free_func)(void *mem);
   376 
   377 /**
   378  *  \brief Get the current set of SDL memory functions
   379  */
   380 extern DECLSPEC void SDLCALL SDL_GetMemoryFunctions(SDL_malloc_func *malloc_func,
   381                                                     SDL_calloc_func *calloc_func,
   382                                                     SDL_realloc_func *realloc_func,
   383                                                     SDL_free_func *free_func);
   384 
   385 /**
   386  *  \brief Replace SDL's memory allocation functions with a custom set
   387  *
   388  *  \note If you are replacing SDL's memory functions, you should call
   389  *        SDL_GetNumAllocations() and be very careful if it returns non-zero.
   390  *        That means that your free function will be called with memory
   391  *        allocated by the previous memory allocation functions.
   392  */
   393 extern DECLSPEC int SDLCALL SDL_SetMemoryFunctions(SDL_malloc_func malloc_func,
   394                                                    SDL_calloc_func calloc_func,
   395                                                    SDL_realloc_func realloc_func,
   396                                                    SDL_free_func free_func);
   397 
   398 /**
   399  *  \brief Get the number of outstanding (unfreed) allocations
   400  */
   401 extern DECLSPEC int SDLCALL SDL_GetNumAllocations(void);
   402 
   403 extern DECLSPEC char *SDLCALL SDL_getenv(const char *name);
   404 extern DECLSPEC int SDLCALL SDL_setenv(const char *name, const char *value, int overwrite);
   405 
   406 extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size, int (*compare) (const void *, const void *));
   407 
   408 extern DECLSPEC int SDLCALL SDL_abs(int x);
   409 
   410 /* !!! FIXME: these have side effects. You probably shouldn't use them. */
   411 /* !!! FIXME: Maybe we do forceinline functions of SDL_mini, SDL_minf, etc? */
   412 #define SDL_min(x, y) (((x) < (y)) ? (x) : (y))
   413 #define SDL_max(x, y) (((x) > (y)) ? (x) : (y))
   414 
   415 extern DECLSPEC int SDLCALL SDL_isdigit(int x);
   416 extern DECLSPEC int SDLCALL SDL_isspace(int x);
   417 extern DECLSPEC int SDLCALL SDL_isupper(int x);
   418 extern DECLSPEC int SDLCALL SDL_islower(int x);
   419 extern DECLSPEC int SDLCALL SDL_toupper(int x);
   420 extern DECLSPEC int SDLCALL SDL_tolower(int x);
   421 
   422 extern DECLSPEC Uint32 SDLCALL SDL_crc32(Uint32 crc, const void *data, size_t len);
   423 
   424 extern DECLSPEC void *SDLCALL SDL_memset(SDL_OUT_BYTECAP(len) void *dst, int c, size_t len);
   425 
   426 #define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x)))
   427 #define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x)))
   428 #define SDL_zeroa(x) SDL_memset((x), 0, sizeof((x)))
   429 
   430 /* Note that memset() is a byte assignment and this is a 32-bit assignment, so they're not directly equivalent. */
   431 SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
   432 {
   433 #ifdef __APPLE__
   434     memset_pattern4(dst, &val, dwords * 4);
   435 #elif defined(__GNUC__) && defined(i386)
   436     int u0, u1, u2;
   437     __asm__ __volatile__ (
   438         "cld \n\t"
   439         "rep ; stosl \n\t"
   440         : "=&D" (u0), "=&a" (u1), "=&c" (u2)
   441         : "0" (dst), "1" (val), "2" (SDL_static_cast(Uint32, dwords))
   442         : "memory"
   443     );
   444 #else
   445     size_t _n = (dwords + 3) / 4;
   446     Uint32 *_p = SDL_static_cast(Uint32 *, dst);
   447     Uint32 _val = (val);
   448     if (dwords == 0)
   449         return;
   450     switch (dwords % 4)
   451     {
   452         case 0: do {    *_p++ = _val;   /* fallthrough */
   453         case 3:         *_p++ = _val;   /* fallthrough */
   454         case 2:         *_p++ = _val;   /* fallthrough */
   455         case 1:         *_p++ = _val;   /* fallthrough */
   456         } while ( --_n );
   457     }
   458 #endif
   459 }
   460 
   461 extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
   462 
   463 extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
   464 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
   465 
   466 extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
   467 extern DECLSPEC size_t SDLCALL SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
   468 extern DECLSPEC size_t SDLCALL SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
   469 extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr);
   470 extern DECLSPEC wchar_t *SDLCALL SDL_wcsstr(const wchar_t *haystack, const wchar_t *needle);
   471 
   472 extern DECLSPEC int SDLCALL SDL_wcscmp(const wchar_t *str1, const wchar_t *str2);
   473 extern DECLSPEC int SDLCALL SDL_wcsncmp(const wchar_t *str1, const wchar_t *str2, size_t maxlen);
   474 extern DECLSPEC int SDLCALL SDL_wcscasecmp(const wchar_t *str1, const wchar_t *str2);
   475 extern DECLSPEC int SDLCALL SDL_wcsncasecmp(const wchar_t *str1, const wchar_t *str2, size_t len);
   476 
   477 extern DECLSPEC size_t SDLCALL SDL_strlen(const char *str);
   478 extern DECLSPEC size_t SDLCALL SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
   479 extern DECLSPEC size_t SDLCALL SDL_utf8strlcpy(SDL_OUT_Z_CAP(dst_bytes) char *dst, const char *src, size_t dst_bytes);
   480 extern DECLSPEC size_t SDLCALL SDL_strlcat(SDL_INOUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
   481 extern DECLSPEC char *SDLCALL SDL_strdup(const char *str);
   482 extern DECLSPEC char *SDLCALL SDL_strrev(char *str);
   483 extern DECLSPEC char *SDLCALL SDL_strupr(char *str);
   484 extern DECLSPEC char *SDLCALL SDL_strlwr(char *str);
   485 extern DECLSPEC char *SDLCALL SDL_strchr(const char *str, int c);
   486 extern DECLSPEC char *SDLCALL SDL_strrchr(const char *str, int c);
   487 extern DECLSPEC char *SDLCALL SDL_strstr(const char *haystack, const char *needle);
   488 extern DECLSPEC char *SDLCALL SDL_strtokr(char *s1, const char *s2, char **saveptr);
   489 extern DECLSPEC size_t SDLCALL SDL_utf8strlen(const char *str);
   490 
   491 extern DECLSPEC char *SDLCALL SDL_itoa(int value, char *str, int radix);
   492 extern DECLSPEC char *SDLCALL SDL_uitoa(unsigned int value, char *str, int radix);
   493 extern DECLSPEC char *SDLCALL SDL_ltoa(long value, char *str, int radix);
   494 extern DECLSPEC char *SDLCALL SDL_ultoa(unsigned long value, char *str, int radix);
   495 extern DECLSPEC char *SDLCALL SDL_lltoa(Sint64 value, char *str, int radix);
   496 extern DECLSPEC char *SDLCALL SDL_ulltoa(Uint64 value, char *str, int radix);
   497 
   498 extern DECLSPEC int SDLCALL SDL_atoi(const char *str);
   499 extern DECLSPEC double SDLCALL SDL_atof(const char *str);
   500 extern DECLSPEC long SDLCALL SDL_strtol(const char *str, char **endp, int base);
   501 extern DECLSPEC unsigned long SDLCALL SDL_strtoul(const char *str, char **endp, int base);
   502 extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *str, char **endp, int base);
   503 extern DECLSPEC Uint64 SDLCALL SDL_strtoull(const char *str, char **endp, int base);
   504 extern DECLSPEC double SDLCALL SDL_strtod(const char *str, char **endp);
   505 
   506 extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2);
   507 extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2, size_t maxlen);
   508 extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1, const char *str2);
   509 extern DECLSPEC int SDLCALL SDL_strncasecmp(const char *str1, const char *str2, size_t len);
   510 
   511 extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, SDL_SCANF_FORMAT_STRING const char *fmt, ...) SDL_SCANF_VARARG_FUNC(2);
   512 extern DECLSPEC int SDLCALL SDL_vsscanf(const char *text, const char *fmt, va_list ap);
   513 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);
   514 extern DECLSPEC int SDLCALL SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, va_list ap);
   515 
   516 #ifndef HAVE_M_PI
   517 #ifndef M_PI
   518 #define M_PI    3.14159265358979323846264338327950288   /**< pi */
   519 #endif
   520 #endif
   521 
   522 extern DECLSPEC double SDLCALL SDL_acos(double x);
   523 extern DECLSPEC float SDLCALL SDL_acosf(float x);
   524 extern DECLSPEC double SDLCALL SDL_asin(double x);
   525 extern DECLSPEC float SDLCALL SDL_asinf(float x);
   526 extern DECLSPEC double SDLCALL SDL_atan(double x);
   527 extern DECLSPEC float SDLCALL SDL_atanf(float x);
   528 extern DECLSPEC double SDLCALL SDL_atan2(double x, double y);
   529 extern DECLSPEC float SDLCALL SDL_atan2f(float x, float y);
   530 extern DECLSPEC double SDLCALL SDL_ceil(double x);
   531 extern DECLSPEC float SDLCALL SDL_ceilf(float x);
   532 extern DECLSPEC double SDLCALL SDL_copysign(double x, double y);
   533 extern DECLSPEC float SDLCALL SDL_copysignf(float x, float y);
   534 extern DECLSPEC double SDLCALL SDL_cos(double x);
   535 extern DECLSPEC float SDLCALL SDL_cosf(float x);
   536 extern DECLSPEC double SDLCALL SDL_exp(double x);
   537 extern DECLSPEC float SDLCALL SDL_expf(float x);
   538 extern DECLSPEC double SDLCALL SDL_fabs(double x);
   539 extern DECLSPEC float SDLCALL SDL_fabsf(float x);
   540 extern DECLSPEC double SDLCALL SDL_floor(double x);
   541 extern DECLSPEC float SDLCALL SDL_floorf(float x);
   542 extern DECLSPEC double SDLCALL SDL_trunc(double x);
   543 extern DECLSPEC float SDLCALL SDL_truncf(float x);
   544 extern DECLSPEC double SDLCALL SDL_fmod(double x, double y);
   545 extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
   546 extern DECLSPEC double SDLCALL SDL_log(double x);
   547 extern DECLSPEC float SDLCALL SDL_logf(float x);
   548 extern DECLSPEC double SDLCALL SDL_log10(double x);
   549 extern DECLSPEC float SDLCALL SDL_log10f(float x);
   550 extern DECLSPEC double SDLCALL SDL_pow(double x, double y);
   551 extern DECLSPEC float SDLCALL SDL_powf(float x, float y);
   552 extern DECLSPEC double SDLCALL SDL_round(double x);
   553 extern DECLSPEC float SDLCALL SDL_roundf(float x);
   554 extern DECLSPEC long SDLCALL SDL_lround(double x);
   555 extern DECLSPEC long SDLCALL SDL_lroundf(float x);
   556 extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n);
   557 extern DECLSPEC float SDLCALL SDL_scalbnf(float x, int n);
   558 extern DECLSPEC double SDLCALL SDL_sin(double x);
   559 extern DECLSPEC float SDLCALL SDL_sinf(float x);
   560 extern DECLSPEC double SDLCALL SDL_sqrt(double x);
   561 extern DECLSPEC float SDLCALL SDL_sqrtf(float x);
   562 extern DECLSPEC double SDLCALL SDL_tan(double x);
   563 extern DECLSPEC float SDLCALL SDL_tanf(float x);
   564 
   565 /* The SDL implementation of iconv() returns these error codes */
   566 #define SDL_ICONV_ERROR     (size_t)-1
   567 #define SDL_ICONV_E2BIG     (size_t)-2
   568 #define SDL_ICONV_EILSEQ    (size_t)-3
   569 #define SDL_ICONV_EINVAL    (size_t)-4
   570 
   571 /* SDL_iconv_* are now always real symbols/types, not macros or inlined. */
   572 typedef struct _SDL_iconv_t *SDL_iconv_t;
   573 extern DECLSPEC SDL_iconv_t SDLCALL SDL_iconv_open(const char *tocode,
   574                                                    const char *fromcode);
   575 extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
   576 extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf,
   577                                          size_t * inbytesleft, char **outbuf,
   578                                          size_t * outbytesleft);
   579 /**
   580  *  This function converts a string between encodings in one pass, returning a
   581  *  string that must be freed with SDL_free() or NULL on error.
   582  */
   583 extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode,
   584                                                const char *fromcode,
   585                                                const char *inbuf,
   586                                                size_t inbytesleft);
   587 #define SDL_iconv_utf8_locale(S)    SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1)
   588 #define SDL_iconv_utf8_ucs2(S)      (Uint16 *)SDL_iconv_string("UCS-2-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
   589 #define SDL_iconv_utf8_ucs4(S)      (Uint32 *)SDL_iconv_string("UCS-4-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
   590 
   591 /* force builds using Clang's static analysis tools to use literal C runtime
   592    here, since there are possibly tests that are ineffective otherwise. */
   593 #if defined(__clang_analyzer__) && !defined(SDL_DISABLE_ANALYZE_MACROS)
   594 
   595 /* The analyzer knows about strlcpy even when the system doesn't provide it */
   596 #ifndef HAVE_STRLCPY
   597 size_t strlcpy(char* dst, const char* src, size_t size);
   598 #endif
   599 
   600 /* The analyzer knows about strlcat even when the system doesn't provide it */
   601 #ifndef HAVE_STRLCAT
   602 size_t strlcat(char* dst, const char* src, size_t size);
   603 #endif
   604 
   605 #define SDL_malloc malloc
   606 #define SDL_calloc calloc
   607 #define SDL_realloc realloc
   608 #define SDL_free free
   609 #define SDL_memset memset
   610 #define SDL_memcpy memcpy
   611 #define SDL_memmove memmove
   612 #define SDL_memcmp memcmp
   613 #define SDL_strlcpy strlcpy
   614 #define SDL_strlcat strlcat
   615 #define SDL_strlen strlen
   616 #define SDL_wcslen wcslen
   617 #define SDL_wcslcpy wcslcpy
   618 #define SDL_wcslcat wcslcat
   619 #define SDL_strdup strdup
   620 #define SDL_wcsdup wcsdup
   621 #define SDL_strchr strchr
   622 #define SDL_strrchr strrchr
   623 #define SDL_strstr strstr
   624 #define SDL_wcsstr wcsstr
   625 #define SDL_strtokr strtok_r
   626 #define SDL_strcmp strcmp
   627 #define SDL_wcscmp wcscmp
   628 #define SDL_strncmp strncmp
   629 #define SDL_wcsncmp wcsncmp
   630 #define SDL_strcasecmp strcasecmp
   631 #define SDL_strncasecmp strncasecmp
   632 #define SDL_sscanf sscanf
   633 #define SDL_vsscanf vsscanf
   634 #define SDL_snprintf snprintf
   635 #define SDL_vsnprintf vsnprintf
   636 #endif
   637 
   638 SDL_FORCE_INLINE void *SDL_memcpy4(SDL_OUT_BYTECAP(dwords*4) void *dst, SDL_IN_BYTECAP(dwords*4) const void *src, size_t dwords)
   639 {
   640     return SDL_memcpy(dst, src, dwords * 4);
   641 }
   642 
   643 /* Ends C function definitions when using C++ */
   644 #ifdef __cplusplus
   645 }
   646 #endif
   647 #include "close_code.h"
   648 
   649 #endif /* SDL_stdinc_h_ */
   650 
   651 /* vi: set ts=4 sw=4 expandtab: */