stdint.h 文件 int8_t uint8_t int16_t uint16_t （二）

/* The ISO C99 standard specifies that in C++ implementations these
macros should only be defined if explicitly requested. */
#if !defined __cplusplus || defined __STDC_LIMIT_MACROS

# if __WORDSIZE == 64
# define __INT64_C(c) c ## L
# define __UINT64_C(c) c ## UL
# else
# define __INT64_C(c) c ## LL
# define __UINT64_C(c) c ## ULL
# endif

/* Limits of integral types. */

/* Minimum of signed integral types. */
# define INT8_MIN       (-128)
# define INT16_MIN      (-32767-1)
# define INT32_MIN      (-2147483647-1)
# define INT64_MIN      (-__INT64_C(9223372036854775807)-1)
/* Maximum of signed integral types. */
# define INT8_MAX       (127)
# define INT16_MAX      (32767)
# define INT32_MAX      (2147483647)
# define INT64_MAX      (__INT64_C(9223372036854775807))

/* Maximum of unsigned integral types. */
# define UINT8_MAX      (255)
# define UINT16_MAX     (65535)
# define UINT32_MAX     (4294967295U)
# define UINT64_MAX     (__UINT64_C(18446744073709551615))


/* Minimum of signed integral types having a minimum size. */
# define INT_LEAST8_MIN     (-128)
# define INT_LEAST16_MIN    (-32767-1)
# define INT_LEAST32_MIN    (-2147483647-1)
# define INT_LEAST64_MIN    (-__INT64_C(9223372036854775807)-1)
/* Maximum of signed integral types having a minimum size. */
# define INT_LEAST8_MAX     (127)
# define INT_LEAST16_MAX    (32767)
# define INT_LEAST32_MAX    (2147483647)
# define INT_LEAST64_MAX    (__INT64_C(9223372036854775807))

/* Maximum of unsigned integral types having a minimum size. */
# define UINT_LEAST8_MAX    (255)
# define UINT_LEAST16_MAX   (65535)
# define UINT_LEAST32_MAX   (4294967295U)
# define UINT_LEAST64_MAX   (__UINT64_C(18446744073709551615))


/* Minimum of fast signed integral types having a minimum size. */
# define INT_FAST8_MIN      (-128)
# if __WORDSIZE == 64
# define INT_FAST16_MIN    (-9223372036854775807L-1)
# define INT_FAST32_MIN    (-9223372036854775807L-1)
# else
# define INT_FAST16_MIN    (-2147483647-1)
# define INT_FAST32_MIN    (-2147483647-1)
# endif
# define INT_FAST64_MIN     (-__INT64_C(9223372036854775807)-1)
/* Maximum of fast signed integral types having a minimum size. */
# define INT_FAST8_MAX      (127)
# if __WORDSIZE == 64
# define INT_FAST16_MAX    (9223372036854775807L)
# define INT_FAST32_MAX    (9223372036854775807L)
# else
# define INT_FAST16_MAX    (2147483647)
# define INT_FAST32_MAX    (2147483647)
# endif
# define INT_FAST64_MAX     (__INT64_C(9223372036854775807))

/* Maximum of fast unsigned integral types having a minimum size. */
# define UINT_FAST8_MAX     (255)
# if __WORDSIZE == 64
# define UINT_FAST16_MAX   (18446744073709551615UL)
# define UINT_FAST32_MAX   (18446744073709551615UL)
# else
# define UINT_FAST16_MAX   (4294967295U)
# define UINT_FAST32_MAX   (4294967295U)
# endif
# define UINT_FAST64_MAX    (__UINT64_C(18446744073709551615))


/* Values to test for integral types holding `void *' pointer. */
# if __WORDSIZE == 64
# define INTPTR_MIN        (-9223372036854775807L-1)
# define INTPTR_MAX        (9223372036854775807L)
# define UINTPTR_MAX       (18446744073709551615UL)
# else
# define INTPTR_MIN        (-2147483647-1)
# define INTPTR_MAX        (2147483647)
# define UINTPTR_MAX       (4294967295U)
# endif


/* Minimum for largest signed integral type. */
# define INTMAX_MIN     (-__INT64_C(9223372036854775807)-1)
/* Maximum for largest signed integral type. */
# define INTMAX_MAX     (__INT64_C(9223372036854775807))

/* Maximum for largest unsigned integral type. */
# define UINTMAX_MAX        (__UINT64_C(18446744073709551615))


/* Limits of other integer types. */

/* Limits of `ptrdiff_t' type. */
# if __WORDSIZE == 64
# define PTRDIFF_MIN       (-9223372036854775807L-1)
# define PTRDIFF_MAX       (9223372036854775807L)
# else
# define PTRDIFF_MIN       (-2147483647-1)
# define PTRDIFF_MAX       (2147483647)
# endif

/* Limits of `sig_atomic_t'. */
# define SIG_ATOMIC_MIN     (-2147483647-1)
# define SIG_ATOMIC_MAX     (2147483647)

/* Limit of `size_t' type. */
# if __WORDSIZE == 64
# define SIZE_MAX      (18446744073709551615UL)
# else
# define SIZE_MAX      (4294967295U)
# endif

/* Limits of `wchar_t'. */
# ifndef WCHAR_MIN
/* These constants might also be defined in <wchar.h>. */
# define WCHAR_MIN     __WCHAR_MIN
# define WCHAR_MAX     __WCHAR_MAX
# endif

/* Limits of `wint_t'. */
# define WINT_MIN       (0u)
# define WINT_MAX       (4294967295u)

#endif /* C++ && limit macros */


/* The ISO C99 standard specifies that in C++ implementations these
should only be defined if explicitly requested. */
#if !defined __cplusplus || defined __STDC_CONSTANT_MACROS

/* Signed. */
# define INT8_C(c) c
# define INT16_C(c) c
# define INT32_C(c) c
# if __WORDSIZE == 64
# define INT64_C(c)    c ## L
# else
# define INT64_C(c)    c ## LL
# endif

/* Unsigned. */
# define UINT8_C(c) c ## U
# define UINT16_C(c)    c ## U
# define UINT32_C(c)    c ## U
# if __WORDSIZE == 64
# define UINT64_C(c)   c ## UL
# else
# define UINT64_C(c)   c ## ULL
# endif

/* Maximal type. */
# if __WORDSIZE == 64
# define INTMAX_C(c)   c ## L
# define UINTMAX_C(c) c ## UL
# else
# define INTMAX_C(c)   c ## LL
# define UINTMAX_C(c) c ## ULL
# endif

#endif /* C++ && constant macros */

#endif /* stdint.h */