The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/sys/stdint.h

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    1 /*      $OpenBSD: stdint.h,v 1.11 2019/01/25 00:19:26 millert Exp $     */
    2 
    3 /*
    4  * Copyright (c) 1997, 2005 Todd C. Miller <millert@openbsd.org>
    5  *
    6  * Permission to use, copy, modify, and distribute this software for any
    7  * purpose with or without fee is hereby granted, provided that the above
    8  * copyright notice and this permission notice appear in all copies.
    9  *
   10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   17  */
   18 
   19 #ifndef _SYS_STDINT_H_
   20 #define _SYS_STDINT_H_
   21 
   22 #include <sys/cdefs.h>
   23 #include <machine/_types.h>
   24 
   25 #ifndef __BIT_TYPES_DEFINED__
   26 #define __BIT_TYPES_DEFINED__
   27 #endif
   28 
   29 /* 7.18.1.1 Exact-width integer types (also in sys/types.h) */
   30 #ifndef _INT8_T_DEFINED_
   31 #define _INT8_T_DEFINED_
   32 typedef __int8_t                int8_t;
   33 #endif
   34 
   35 #ifndef _UINT8_T_DEFINED_
   36 #define _UINT8_T_DEFINED_
   37 typedef __uint8_t               uint8_t;
   38 #endif
   39 
   40 #ifndef _INT16_T_DEFINED_
   41 #define _INT16_T_DEFINED_
   42 typedef __int16_t               int16_t;
   43 #endif
   44 
   45 #ifndef _UINT16_T_DEFINED_
   46 #define _UINT16_T_DEFINED_
   47 typedef __uint16_t              uint16_t;
   48 #endif
   49 
   50 #ifndef _INT32_T_DEFINED_
   51 #define _INT32_T_DEFINED_
   52 typedef __int32_t               int32_t;
   53 #endif
   54 
   55 #ifndef _UINT32_T_DEFINED_
   56 #define _UINT32_T_DEFINED_
   57 typedef __uint32_t              uint32_t;
   58 #endif
   59 
   60 #ifndef _INT64_T_DEFINED_
   61 #define _INT64_T_DEFINED_
   62 typedef __int64_t               int64_t;
   63 #endif
   64 
   65 #ifndef _UINT64_T_DEFINED_
   66 #define _UINT64_T_DEFINED_
   67 typedef __uint64_t              uint64_t;
   68 #endif
   69 
   70 /* 7.18.1.2 Minimum-width integer types */
   71 typedef __int_least8_t          int_least8_t;
   72 typedef __uint_least8_t         uint_least8_t;
   73 typedef __int_least16_t         int_least16_t;
   74 typedef __uint_least16_t        uint_least16_t;
   75 typedef __int_least32_t         int_least32_t;
   76 typedef __uint_least32_t        uint_least32_t;
   77 typedef __int_least64_t         int_least64_t;
   78 typedef __uint_least64_t        uint_least64_t;
   79 
   80 /* 7.18.1.3 Fastest minimum-width integer types */
   81 typedef __int_fast8_t           int_fast8_t;
   82 typedef __uint_fast8_t          uint_fast8_t;
   83 typedef __int_fast16_t          int_fast16_t;
   84 typedef __uint_fast16_t         uint_fast16_t;
   85 typedef __int_fast32_t          int_fast32_t;
   86 typedef __uint_fast32_t         uint_fast32_t;
   87 typedef __int_fast64_t          int_fast64_t;
   88 typedef __uint_fast64_t         uint_fast64_t;
   89 
   90 /* 7.18.1.4 Integer types capable of holding object pointers */
   91 #ifndef _INTPTR_T_DEFINED_
   92 #define _INTPTR_T_DEFINED_
   93 typedef __intptr_t              intptr_t;
   94 #endif
   95 
   96 typedef __uintptr_t             uintptr_t;
   97 
   98 /* 7.18.1.5 Greatest-width integer types */
   99 typedef __intmax_t              intmax_t;
  100 typedef __uintmax_t             uintmax_t;
  101 
  102 /*
  103  * 7.18.2 Limits of specified-width integer types.
  104  *
  105  * The following object-like macros specify the minimum and maximum limits
  106  * of integer types corresponding to the typedef names defined above.
  107  */
  108 
  109 /* 7.18.2.1 Limits of exact-width integer types */
  110 #define INT8_MIN                (-0x7f - 1)
  111 #define INT16_MIN               (-0x7fff - 1)
  112 #define INT32_MIN               (-0x7fffffff - 1)
  113 #define INT64_MIN               (-0x7fffffffffffffffLL - 1)
  114 
  115 #define INT8_MAX                0x7f
  116 #define INT16_MAX               0x7fff
  117 #define INT32_MAX               0x7fffffff
  118 #define INT64_MAX               0x7fffffffffffffffLL
  119 
  120 #define UINT8_MAX               0xff
  121 #define UINT16_MAX              0xffff
  122 #define UINT32_MAX              0xffffffffU
  123 #define UINT64_MAX              0xffffffffffffffffULL
  124 
  125 /* 7.18.2.2 Limits of minimum-width integer types */
  126 #define INT_LEAST8_MIN          INT8_MIN
  127 #define INT_LEAST16_MIN         INT16_MIN
  128 #define INT_LEAST32_MIN         INT32_MIN
  129 #define INT_LEAST64_MIN         INT64_MIN
  130 
  131 #define INT_LEAST8_MAX          INT8_MAX
  132 #define INT_LEAST16_MAX         INT16_MAX
  133 #define INT_LEAST32_MAX         INT32_MAX
  134 #define INT_LEAST64_MAX         INT64_MAX
  135 
  136 #define UINT_LEAST8_MAX         UINT8_MAX
  137 #define UINT_LEAST16_MAX        UINT16_MAX
  138 #define UINT_LEAST32_MAX        UINT32_MAX
  139 #define UINT_LEAST64_MAX        UINT64_MAX
  140 
  141 /* 7.18.2.3 Limits of fastest minimum-width integer types */
  142 #define INT_FAST8_MIN           __INT_FAST8_MIN
  143 #define INT_FAST16_MIN          __INT_FAST16_MIN
  144 #define INT_FAST32_MIN          __INT_FAST32_MIN
  145 #define INT_FAST64_MIN          __INT_FAST64_MIN
  146 
  147 #define INT_FAST8_MAX           __INT_FAST8_MAX
  148 #define INT_FAST16_MAX          __INT_FAST16_MAX
  149 #define INT_FAST32_MAX          __INT_FAST32_MAX
  150 #define INT_FAST64_MAX          __INT_FAST64_MAX
  151 
  152 #define UINT_FAST8_MAX          __UINT_FAST8_MAX
  153 #define UINT_FAST16_MAX         __UINT_FAST16_MAX
  154 #define UINT_FAST32_MAX         __UINT_FAST32_MAX
  155 #define UINT_FAST64_MAX         __UINT_FAST64_MAX
  156 
  157 /* 7.18.2.4 Limits of integer types capable of holding object pointers */
  158 #ifdef __LP64__
  159 #define INTPTR_MIN              (-0x7fffffffffffffffL - 1)
  160 #define INTPTR_MAX              0x7fffffffffffffffL
  161 #define UINTPTR_MAX             0xffffffffffffffffUL
  162 #else
  163 #define INTPTR_MIN              (-0x7fffffffL - 1)
  164 #define INTPTR_MAX              0x7fffffffL
  165 #define UINTPTR_MAX             0xffffffffUL
  166 #endif
  167 
  168 /* 7.18.2.5 Limits of greatest-width integer types */
  169 #define INTMAX_MIN              INT64_MIN
  170 #define INTMAX_MAX              INT64_MAX
  171 #define UINTMAX_MAX             UINT64_MAX
  172 
  173 /*
  174  * 7.18.3 Limits of other integer types.
  175  *
  176  * The following object-like macros specify the minimum and maximum limits
  177  * of integer types corresponding to types specified in other standard
  178  * header files.
  179  */
  180 
  181 /* Limits of ptrdiff_t */
  182 #define PTRDIFF_MIN             INTPTR_MIN
  183 #define PTRDIFF_MAX             INTPTR_MAX
  184 
  185 /* Limits of sig_atomic_t */
  186 #define SIG_ATOMIC_MIN          INT32_MIN
  187 #define SIG_ATOMIC_MAX          INT32_MAX
  188 
  189 /* Limit of size_t */
  190 #ifndef SIZE_MAX
  191 #define SIZE_MAX                UINTPTR_MAX
  192 #endif
  193 
  194 /* Limits of wchar_t */
  195 #ifndef WCHAR_MIN
  196 #define WCHAR_MIN               INT32_MIN
  197 #endif
  198 #ifndef WCHAR_MAX
  199 #define WCHAR_MAX               INT32_MAX
  200 #endif
  201 
  202 /* Limits of wint_t */
  203 #define WINT_MIN                INT32_MIN
  204 #define WINT_MAX                INT32_MAX
  205 
  206 /*
  207  * 7.18.4 Macros for integer constants.
  208  *
  209  * The following function-like macros expand to integer constants
  210  * suitable for initializing objects that have integer types corresponding
  211  * to types defined in <stdint.h>.  The argument in any instance of
  212  * these macros shall be a decimal, octal, or hexadecimal constant with
  213  * a value that does not exceed the limits for the corresponding type.
  214  */
  215 
  216 /* 7.18.4.1 Macros for minimum-width integer constants. */
  217 #define INT8_C(_c)              (_c)
  218 #define INT16_C(_c)             (_c)
  219 #define INT32_C(_c)             (_c)
  220 #define INT64_C(_c)             __CONCAT(_c, LL)
  221 
  222 #define UINT8_C(_c)             (_c)
  223 #define UINT16_C(_c)            (_c)
  224 #define UINT32_C(_c)            __CONCAT(_c, U)
  225 #define UINT64_C(_c)            __CONCAT(_c, ULL)
  226 
  227 /* 7.18.4.2 Macros for greatest-width integer constants. */
  228 #define INTMAX_C(_c)            __CONCAT(_c, LL)
  229 #define UINTMAX_C(_c)           __CONCAT(_c, ULL)
  230 
  231 #endif /* _SYS_STDINT_H_ */

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