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#ifndef __DATATYPES_H
#define __DATATYPES_H
#include <config.h>
#if defined(HAVE_STDINT_H)
# include <stdint.h>
#else // not HAVE_STDINT_H
# if defined(__CYGWIN__) && defined(__BIT_TYPES_DEFINED__)
typedef u_int8_t uint8_t;
typedef u_int16_t uint16_t;
typedef u_int32_t uint32_t;
# else // not _CYGWIN__ && __BIT_TYPES_DEFINED__
# include <limits.h>
// Define datatypes according to limits.h
# if (UCHAR_MAX == 255)
typedef unsigned char uint8_t;
typedef signed char int8_t;
# else
# error No 8-bit integer type found
# endif
# if (UCHAR_MAX == 65535)
typedef unsigned char uint16_t;
typedef signed char int16_t;
# else
# if (USHRT_MAX == 65535)
typedef unsigned short uint16_t;
typedef signed short int16_t;
# else
# if (UINT_MAX == 65535)
typedef unsigned int uint16_t;
typedef signed int int16_t;
# else
# error No 16-bit integer type found
# endif
# endif
# endif
# if (UCHAR_MAX == 4294967295U)
typedef unsigned char uint32_t;
typedef signed char int32_t;
# else
# if (USHRT_MAX == 4294967295U)
typedef unsigned short uint32_t;
typedef signed short int32_t;
# else
# if (UINT_MAX == 4294967295U)
typedef unsigned int uint32_t;
typedef signed int int32_t;
# else
# if (ULONG_MAX == 4294967295)
typedef unsigned long uint32_t;
typedef signed long int32_t;
# else
# error No 32-bit integer type found
# endif
# endif
# endif
# endif
# endif // else not _CYGWIN__ && __BIT_TYPES_DEFINED__
#endif // else not HAVE_STDINT_H
// Define little-endian datatypes
#if defined(WORDS_BIGENDIAN)
# include <string.h>
# if defined(__GNUC__) || defined(__EMX__)
# pragma pack(1)
# endif
// Little-endian emulation layer
/** Class that emulates a 16-bit unsigned little-endian value */
class le_uint16_t
{
public:
/** Assign a 16-bit unsigned value to the variable. */
le_uint16_t &operator=(uint16_t);
/** Convert variable to corresponding machine-endian value. */
operator uint16_t();
private:
uint8_t data[2]; ///< 16 bits in a byte field
};
/** Class that emulates a 16-bit signed little-endian value */
class le_int16_t
{
public:
/** Assign a 16-bit signed value to the variable. */
le_int16_t &operator=(int16_t);
/** Convert variable to corresponding machine-endian value. */
operator int16_t();
private:
uint8_t data[2]; ///< 16 bits in a byte field
};
/** Class that emulates a 32-bit unsigned little-endian value */
class le_uint32_t
{
public:
/** Assign a 32-bit unsigned value to the variable. */
le_uint32_t &operator=(uint32_t);
/** Convert variable to corresponding machine-endian value. */
operator uint32_t();
private:
uint8_t data[4]; ///< 32 bits in a byte field
};
/** Class that emulates a 32-bit signed little-endian value */
class le_int32_t
{
public:
/** Assign a 32-bit signed value to the variable. */
le_int32_t &operator=(int32_t);
/** Convert variable to corresponding machine-endian value. */
operator int32_t();
private:
uint8_t data[4]; ///< 32 bits in a byte field
};
# if defined(__GNUC__) || defined(__EMX__)
# pragma pack()
# endif
#else
# define le_uint16_t uint16_t
# define le_int16_t int16_t
# define le_uint32_t uint32_t
# define le_int32_t int32_t
#endif
#endif
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