/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2012 Sam Lantinga

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Lesser General Public

    License as published by the Free Software Foundation; either

    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public

    License along with this library; if not, write to the Free Software

    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga

    slouken@libsdl.org

*/

/** @file SDL_stdinc.h

 *  This is a general header that includes C language support

 */

#ifndef _SDL_stdinc_h

#define _SDL_stdinc_h

#include "SDL_config.h"

#ifdef HAVE_SYS_TYPES_H

#include <sys/types.h>

#endif

#ifdef HAVE_STDIO_H

#include <stdio.h>

#endif

#if defined(STDC_HEADERS)

# include <stdlib.h>

# include <stddef.h>

# include <stdarg.h>

#else

# if defined(HAVE_STDLIB_H)

#  include <stdlib.h>

# elif defined(HAVE_MALLOC_H)

#  include <malloc.h>

# endif

# if defined(HAVE_STDDEF_H)

#  include <stddef.h>

# endif

# if defined(HAVE_STDARG_H)

#  include <stdarg.h>

# endif

#endif

#ifdef HAVE_STRING_H

# if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)

#  include <memory.h>

# endif

# include <string.h>

#endif

#ifdef HAVE_STRINGS_H

# include <strings.h>

#endif

#if defined(HAVE_INTTYPES_H)

# include <inttypes.h>

#elif defined(HAVE_STDINT_H)

# include <stdint.h>

#endif

#ifdef HAVE_CTYPE_H

# include <ctype.h>

#endif

#if defined(HAVE_ICONV) && defined(HAVE_ICONV_H)

# include <iconv.h>

#endif

/** The number of elements in an array */

#define SDL_arraysize(array)	(sizeof(array)/sizeof(array[0]))

#define SDL_TABLESIZE(table)	SDL_arraysize(table)

/* Use proper C++ casts when compiled as C++ to be compatible with the option

 -Wold-style-cast of GCC (and -Werror=old-style-cast in GCC 4.2 and above. */

#ifdef __cplusplus

#define SDL_reinterpret_cast(type, expression) reinterpret_cast<type>(expression)

#define SDL_static_cast(type, expression) static_cast<type>(expression)

#else

#define SDL_reinterpret_cast(type, expression) ((type)(expression))

#define SDL_static_cast(type, expression) ((type)(expression))

#endif

/** @name Basic data types */

/*@{*/

typedef enum {

	SDL_FALSE = 0,

	SDL_TRUE  = 1

} SDL_bool;

typedef int8_t		Sint8;

typedef uint8_t		Uint8;

typedef int16_t		Sint16;

typedef uint16_t	Uint16;

typedef int32_t		Sint32;

typedef uint32_t	Uint32;

#ifdef SDL_HAS_64BIT_TYPE

typedef int64_t		Sint64;

#ifndef SYMBIAN32_GCCE

typedef uint64_t	Uint64;

#endif

#else

/* This is really just a hack to prevent the compiler from complaining */

typedef struct {

	Uint32 hi;

	Uint32 lo;

} Uint64, Sint64;

#endif

/*@}*/

/** @name Make sure the types really have the right sizes */

/*@{*/

#define SDL_COMPILE_TIME_ASSERT(name, x)               \

       typedef int SDL_dummy_ ## name[(x) * 2 - 1]

SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);

SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);

SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);

SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);

SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);

SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);

SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);

SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);

/*@}*/

/** @name Enum Size Check

 *  Check to make sure enums are the size of ints, for structure packing.

 *  For both Watcom C/C++ and Borland C/C++ the compiler option that makes

 *  enums having the size of an int must be enabled.

 *  This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).

 */

/* Enable enums always int in CodeWarrior (for MPW use "-enum int") */

#ifdef __MWERKS__

#pragma enumsalwaysint on

#endif

typedef enum {

	DUMMY_ENUM_VALUE

} SDL_DUMMY_ENUM;

#ifndef __NDS__

SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));

#endif

/*@}*/

#include "begin_code.h"

/* Set up for C function definitions, even when using C++ */

#ifdef __cplusplus

extern "C" {

#endif

#ifdef HAVE_MALLOC

#define SDL_malloc	malloc

#else

extern DECLSPEC void * SDLCALL SDL_malloc(size_t size);

#endif

#ifdef HAVE_CALLOC

#define SDL_calloc	calloc

#else

extern DECLSPEC void * SDLCALL SDL_calloc(size_t nmemb, size_t size);

#endif

#ifdef HAVE_REALLOC

#define SDL_realloc	realloc

#else

extern DECLSPEC void * SDLCALL SDL_realloc(void *mem, size_t size);

#endif

#ifdef HAVE_FREE

#define SDL_free	free

#else

extern DECLSPEC void SDLCALL SDL_free(void *mem);

#endif

#if defined(HAVE_ALLOCA) && !defined(alloca)

# if defined(HAVE_ALLOCA_H)

#  include <alloca.h>

# elif defined(__GNUC__)

#  define alloca __builtin_alloca

# elif defined(_MSC_VER)

#  include <malloc.h>

#  define alloca _alloca

# elif defined(__WATCOMC__)

#  include <malloc.h>

# elif defined(__BORLANDC__)

#  include <malloc.h>

# elif defined(__DMC__)

#  include <stdlib.h>

# elif defined(__AIX__)

  #pragma alloca

# elif defined(__MRC__)

   void *alloca (unsigned);

# else

   char *alloca ();

# endif

#endif

#ifdef HAVE_ALLOCA

#define SDL_stack_alloc(type, count)    (type*)alloca(sizeof(type)*(count))

#define SDL_stack_free(data)

#else

#define SDL_stack_alloc(type, count)    (type*)SDL_malloc(sizeof(type)*(count))

#define SDL_stack_free(data)            SDL_free(data)

#endif

#ifdef HAVE_GETENV

#define SDL_getenv	getenv

#else

extern DECLSPEC char * SDLCALL SDL_getenv(const char *name);

#endif

#ifdef HAVE_PUTENV

#define SDL_putenv	putenv

#else

extern DECLSPEC int SDLCALL SDL_putenv(const char *variable);

#endif

#ifdef HAVE_QSORT

#define SDL_qsort	qsort

#else

extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size,

           int (*compare)(const void *, const void *));

#endif

#ifdef HAVE_ABS

#define SDL_abs		abs

#else

#define SDL_abs(X)	((X) < 0 ? -(X) : (X))

#endif

#define SDL_min(x, y)	(((x) < (y)) ? (x) : (y))

#define SDL_max(x, y)	(((x) > (y)) ? (x) : (y))

#ifdef HAVE_CTYPE_H

#define SDL_isdigit(X)  isdigit(X)

#define SDL_isspace(X)  isspace(X)

#define SDL_toupper(X)  toupper(X)

#define SDL_tolower(X)  tolower(X)

#else

#define SDL_isdigit(X)  (((X) >= '0') && ((X) <= '9'))

#define SDL_isspace(X)  (((X) == ' ') || ((X) == '\t') || ((X) == '\r') || ((X) == '\n'))

#define SDL_toupper(X)  (((X) >= 'a') && ((X) <= 'z') ? ('A'+((X)-'a')) : (X))

#define SDL_tolower(X)  (((X) >= 'A') && ((X) <= 'Z') ? ('a'+((X)-'A')) : (X))

#endif

#ifdef HAVE_MEMSET

#define SDL_memset      memset

#else

extern DECLSPEC void * SDLCALL SDL_memset(void *dst, int c, size_t len);

#endif

#if defined(__GNUC__) && defined(i386)

#define SDL_memset4(dst, val, len)				\

do {								\

	int u0, u1, u2;						\

	__asm__ __volatile__ (					\

		"cld\n\t"					\

		"rep ; stosl\n\t"				\

		: "=&D" (u0), "=&a" (u1), "=&c" (u2)		\

		: "0" (dst), "1" (val), "2" (SDL_static_cast(Uint32, len))	\

		: "memory" );					\

} while(0)

#endif

#ifndef SDL_memset4

#define SDL_memset4(dst, val, len)		\

do {						\

	unsigned _count = (len);		\

	unsigned _n = (_count + 3) / 4;		\

	Uint32 *_p = SDL_static_cast(Uint32 *, dst);	\

	Uint32 _val = (val);			\

	if (len == 0) break;			\

        switch (_count % 4) {			\

        case 0: do {    *_p++ = _val;		\

        case 3:         *_p++ = _val;		\

        case 2:         *_p++ = _val;		\

        case 1:         *_p++ = _val;		\

		} while ( --_n );		\

	}					\

} while(0)

#endif

/* We can count on memcpy existing on Mac OS X and being well-tuned. */

#if defined(__MACH__) && defined(__APPLE__)

#define SDL_memcpy(dst, src, len) memcpy(dst, src, len)

#elif defined(__GNUC__) && defined(i386)

#define SDL_memcpy(dst, src, len)					  \

do {									  \

	int u0, u1, u2;						  	  \

	__asm__ __volatile__ (						  \

		"cld\n\t"						  \

		"rep ; movsl\n\t"					  \

		"testb $2,%b4\n\t"					  \

		"je 1f\n\t"						  \

		"movsw\n"						  \

		"1:\ttestb $1,%b4\n\t"					  \

		"je 2f\n\t"						  \

		"movsb\n"						  \

		"2:"							  \

		: "=&c" (u0), "=&D" (u1), "=&S" (u2)			  \

		: "0" (SDL_static_cast(unsigned, len)/4), "q" (len), "1" (dst),"2" (src) \

		: "memory" );						  \

} while(0)

#endif

#ifndef SDL_memcpy

#ifdef HAVE_MEMCPY

#define SDL_memcpy      memcpy

#elif defined(HAVE_BCOPY)

#define SDL_memcpy(d, s, n)	bcopy((s), (d), (n))

#else

extern DECLSPEC void * SDLCALL SDL_memcpy(void *dst, const void *src, size_t len);

#endif

#endif

/* We can count on memcpy existing on Mac OS X and being well-tuned. */

#if defined(__MACH__) && defined(__APPLE__)

#define SDL_memcpy4(dst, src, len) memcpy(dst, src, (len)*4)

#elif defined(__GNUC__) && defined(i386)

#define SDL_memcpy4(dst, src, len)				\

do {								\

	int ecx, edi, esi;					\

	__asm__ __volatile__ (					\

		"cld\n\t"					\

		"rep ; movsl"					\

		: "=&c" (ecx), "=&D" (edi), "=&S" (esi)		\

		: "0" (SDL_static_cast(unsigned, len)), "1" (dst), "2" (src)	\

		: "memory" );					\

} while(0)

#endif

#ifndef SDL_memcpy4

#define SDL_memcpy4(dst, src, len)	SDL_memcpy(dst, src, (len) << 2)

#endif

#if defined(__GNUC__) && defined(i386)

#define SDL_revcpy(dst, src, len)			\

do {							\

	int u0, u1, u2;					\

	char *dstp = SDL_static_cast(char *, dst);	\

	char *srcp = SDL_static_cast(char *, src);	\

	int n = (len);					\

	if ( n >= 4 ) {					\

	__asm__ __volatile__ (				\

		"std\n\t"				\

		"rep ; movsl\n\t"			\

		"cld\n\t"				\

		: "=&c" (u0), "=&D" (u1), "=&S" (u2)	\

		: "0" (n >> 2),				\

		  "1" (dstp+(n-4)), "2" (srcp+(n-4))	\

		: "memory" );				\

	}						\

	switch (n & 3) {				\

		case 3: dstp[2] = srcp[2];		\

		case 2: dstp[1] = srcp[1];		\

		case 1: dstp[0] = srcp[0];		\

			break;				\

		default:				\

			break;				\

	}						\

} while(0)

#endif

#ifndef SDL_revcpy

extern DECLSPEC void * SDLCALL SDL_revcpy(void *dst, const void *src, size_t len);

#endif

#ifdef HAVE_MEMMOVE

#define SDL_memmove     memmove

#elif defined(HAVE_BCOPY)

#define SDL_memmove(d, s, n)	bcopy((s), (d), (n))

#else

#define SDL_memmove(dst, src, len)			\

do {							\

	if ( dst < src ) {				\

		SDL_memcpy(dst, src, len);		\

	} else {					\

		SDL_revcpy(dst, src, len);		\

	}						\

} while(0)

#endif

#ifdef HAVE_MEMCMP

#define SDL_memcmp      memcmp

#else

extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);

#endif

#ifdef HAVE_STRLEN

#define SDL_strlen      strlen

#else

extern DECLSPEC size_t SDLCALL SDL_strlen(const char *string);

#endif

#ifdef HAVE_STRLCPY

#define SDL_strlcpy     strlcpy

#else

extern DECLSPEC size_t SDLCALL SDL_strlcpy(char *dst, const char *src, size_t maxlen);

#endif

#ifdef HAVE_STRLCAT

#define SDL_strlcat    strlcat

#else

extern DECLSPEC size_t SDLCALL SDL_strlcat(char *dst, const char *src, size_t maxlen);

#endif

#ifdef HAVE_STRDUP

#define SDL_strdup     strdup

#else

extern DECLSPEC char * SDLCALL SDL_strdup(const char *string);

#endif

#ifdef HAVE__STRREV

#define SDL_strrev      _strrev

#else

extern DECLSPEC char * SDLCALL SDL_strrev(char *string);

#endif

#ifdef HAVE__STRUPR

#define SDL_strupr      _strupr

#else

extern DECLSPEC char * SDLCALL SDL_strupr(char *string);

#endif

#ifdef HAVE__STRLWR

#define SDL_strlwr      _strlwr

#else

extern DECLSPEC char * SDLCALL SDL_strlwr(char *string);

#endif

#ifdef HAVE_STRCHR

#define SDL_strchr      strchr

#elif defined(HAVE_INDEX)

#define SDL_strchr      index

#else

extern DECLSPEC char * SDLCALL SDL_strchr(const char *string, int c);

#endif

#ifdef HAVE_STRRCHR

#define SDL_strrchr     strrchr

#elif defined(HAVE_RINDEX)

#define SDL_strrchr     rindex

#else

extern DECLSPEC char * SDLCALL SDL_strrchr(const char *string, int c);

#endif

#ifdef HAVE_STRSTR

#define SDL_strstr      strstr

#else

extern DECLSPEC char * SDLCALL SDL_strstr(const char *haystack, const char *needle);

#endif

#ifdef HAVE_ITOA

#define SDL_itoa        itoa

#else

#define SDL_itoa(value, string, radix)	SDL_ltoa((long)value, string, radix)

#endif

#ifdef HAVE__LTOA

#define SDL_ltoa        _ltoa

#else

extern DECLSPEC char * SDLCALL SDL_ltoa(long value, char *string, int radix);

#endif

#ifdef HAVE__UITOA

#define SDL_uitoa       _uitoa

#else

#define SDL_uitoa(value, string, radix)	SDL_ultoa((long)value, string, radix)

#endif

#ifdef HAVE__ULTOA

#define SDL_ultoa       _ultoa

#else

extern DECLSPEC char * SDLCALL SDL_ultoa(unsigned long value, char *string, int radix);

#endif

#ifdef HAVE_STRTOL

#define SDL_strtol      strtol

#else

extern DECLSPEC long SDLCALL SDL_strtol(const char *string, char **endp, int base);

#endif

#ifdef HAVE_STRTOUL

#define SDL_strtoul      strtoul

#else

extern DECLSPEC unsigned long SDLCALL SDL_strtoul(const char *string, char **endp, int base);

#endif

#ifdef SDL_HAS_64BIT_TYPE

#ifdef HAVE__I64TOA

#define SDL_lltoa       _i64toa

#else

extern DECLSPEC char* SDLCALL SDL_lltoa(Sint64 value, char *string, int radix);

#endif

#ifdef HAVE__UI64TOA

#define SDL_ulltoa      _ui64toa

#else

extern DECLSPEC char* SDLCALL SDL_ulltoa(Uint64 value, char *string, int radix);

#endif

#ifdef HAVE_STRTOLL

#define SDL_strtoll     strtoll

#else

extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *string, char **endp, int base);

#endif

#ifdef HAVE_STRTOULL

#define SDL_strtoull     strtoull

#else

extern DECLSPEC Uint64 SDLCALL SDL_strtoull(const char *string, char **endp, int base);

#endif

#endif /* SDL_HAS_64BIT_TYPE */

#ifdef HAVE_STRTOD

#define SDL_strtod      strtod

#else

extern DECLSPEC double SDLCALL SDL_strtod(const char *string, char **endp);

#endif

#ifdef HAVE_ATOI