187 lines
5.7 KiB
C
187 lines
5.7 KiB
C
/* ISO C9x 7.18 Integer types <stdint.h>
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* Based on ISO/IEC SC22/WG14 9899 Committee draft (SC22 N2794)
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*
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* THIS SOFTWARE IS NOT COPYRIGHTED
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*
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* Contributor: Danny Smith <danny_r_smith_2001@yahoo.co.nz>
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*
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* This source code is offered for use in the public domain. You may
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* use, modify or distribute it freely.
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*
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* This code is distributed in the hope that it will be useful but
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* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
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* DISCLAIMED. This includes but is not limited to warranties of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Date: 2000-12-02
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*/
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#ifndef _STDINT_H
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#define _STDINT_H
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#define __need_wint_t
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#define __need_wchar_t
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#include <stddef.h>
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/* 7.18.1.1 Exact-width integer types */
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typedef signed char int8_t;
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typedef unsigned char uint8_t;
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typedef short int16_t;
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typedef unsigned short uint16_t;
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typedef int int32_t;
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typedef unsigned uint32_t;
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typedef long long int64_t;
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typedef unsigned long long uint64_t;
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/* 7.18.1.2 Minimum-width integer types */
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typedef signed char int_least8_t;
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typedef unsigned char uint_least8_t;
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typedef short int_least16_t;
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typedef unsigned short uint_least16_t;
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typedef int int_least32_t;
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typedef unsigned uint_least32_t;
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typedef long long int_least64_t;
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typedef unsigned long long uint_least64_t;
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/* 7.18.1.3 Fastest minimum-width integer types
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* Not actually guaranteed to be fastest for all purposes
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* Here we use the exact-width types for 8 and 16-bit ints.
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*/
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typedef char int_fast8_t;
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typedef unsigned char uint_fast8_t;
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typedef short int_fast16_t;
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typedef unsigned short uint_fast16_t;
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typedef int int_fast32_t;
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typedef unsigned int uint_fast32_t;
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typedef long long int_fast64_t;
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typedef unsigned long long uint_fast64_t;
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/* 7.18.1.4 Integer types capable of holding object pointers */
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typedef int intptr_t;
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typedef unsigned uintptr_t;
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/* 7.18.1.5 Greatest-width integer types */
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typedef long long intmax_t;
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typedef unsigned long long uintmax_t;
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/* 7.18.2 Limits of specified-width integer types */
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#if !defined ( __cplusplus) || defined (__STDC_LIMIT_MACROS)
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/* 7.18.2.1 Limits of exact-width integer types */
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#define INT8_MIN (-128)
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#define INT16_MIN (-32768)
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#define INT32_MIN (-2147483647 - 1)
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#define INT64_MIN (-9223372036854775807LL - 1)
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#define INT8_MAX 127
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#define INT16_MAX 32767
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#define INT32_MAX 2147483647
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#define INT64_MAX 9223372036854775807LL
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#define UINT8_MAX 0xff /* 255U */
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#define UINT16_MAX 0xffff /* 65535U */
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#define UINT32_MAX 0xffffffff /* 4294967295U */
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#define UINT64_MAX 0xffffffffffffffffULL /* 18446744073709551615ULL */
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/* 7.18.2.2 Limits of minimum-width integer types */
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#define INT_LEAST8_MIN INT8_MIN
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#define INT_LEAST16_MIN INT16_MIN
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#define INT_LEAST32_MIN INT32_MIN
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#define INT_LEAST64_MIN INT64_MIN
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#define INT_LEAST8_MAX INT8_MAX
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#define INT_LEAST16_MAX INT16_MAX
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#define INT_LEAST32_MAX INT32_MAX
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#define INT_LEAST64_MAX INT64_MAX
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#define UINT_LEAST8_MAX UINT8_MAX
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#define UINT_LEAST16_MAX UINT16_MAX
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#define UINT_LEAST32_MAX UINT32_MAX
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#define UINT_LEAST64_MAX UINT64_MAX
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/* 7.18.2.3 Limits of fastest minimum-width integer types */
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#define INT_FAST8_MIN INT8_MIN
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#define INT_FAST16_MIN INT16_MIN
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#define INT_FAST32_MIN INT32_MIN
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#define INT_FAST64_MIN INT64_MIN
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#define INT_FAST8_MAX INT8_MAX
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#define INT_FAST16_MAX INT16_MAX
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#define INT_FAST32_MAX INT32_MAX
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#define INT_FAST64_MAX INT64_MAX
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#define UINT_FAST8_MAX UINT8_MAX
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#define UINT_FAST16_MAX UINT16_MAX
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#define UINT_FAST32_MAX UINT32_MAX
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#define UINT_FAST64_MAX UINT64_MAX
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/* 7.18.2.4 Limits of integer types capable of holding
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object pointers */
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#define INTPTR_MIN INT32_MIN
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#define INTPTR_MAX INT32_MAX
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#define UINTPTR_MAX UINT32_MAX
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/* 7.18.2.5 Limits of greatest-width integer types */
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#define INTMAX_MIN INT64_MIN
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#define INTMAX_MAX INT64_MAX
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#define UINTMAX_MAX UINT64_MAX
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/* 7.18.3 Limits of other integer types */
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#define PTRDIFF_MIN INT32_MIN
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#define PTRDIFF_MAX INT32_MAX
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#define SIG_ATOMIC_MIN INT32_MIN
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#define SIG_ATOMIC_MAX INT32_MAX
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#define SIZE_MAX UINT32_MAX
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#ifndef WCHAR_MIN /* also in wchar.h */
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#define WCHAR_MIN 0
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#define WCHAR_MAX ((wchar_t)-1) /* UINT16_MAX */
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#endif
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/*
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* wint_t is unsigned short for compatibility with MS runtime
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*/
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#define WINT_MIN 0
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#define WINT_MAX ((wint_t)-1) /* UINT16_MAX */
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#endif /* !defined ( __cplusplus) || defined __STDC_LIMIT_MACROS */
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/* 7.18.4 Macros for integer constants */
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#if !defined ( __cplusplus) || defined (__STDC_CONSTANT_MACROS)
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/* 7.18.4.1 Macros for minimum-width integer constants
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Accoding to Douglas Gwyn <gwyn@arl.mil>:
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"This spec was changed in ISO/IEC 9899:1999 TC1; in ISO/IEC
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9899:1999 as initially published, the expansion was required
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to be an integer constant of precisely matching type, which
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is impossible to accomplish for the shorter types on most
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platforms, because C99 provides no standard way to designate
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an integer constant with width less than that of type int.
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TC1 changed this to require just an integer constant
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*expression* with *promoted* type."
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The trick used here is from Clive D W Feather.
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*/
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#define INT8_C(val) (INT_LEAST8_MAX-INT_LEAST8_MAX+(val))
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#define INT16_C(val) (INT_LEAST16_MAX-INT_LEAST16_MAX+(val))
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#define INT32_C(val) (INT_LEAST32_MAX-INT_LEAST32_MAX+(val))
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#define INT64_C(val) (INT_LEAST64_MAX-INT_LEAST64_MAX+(val))
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#define UINT8_C(val) (UINT_LEAST8_MAX-UINT_LEAST8_MAX+(val))
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#define UINT16_C(val) (UINT_LEAST16_MAX-UINT_LEAST16_MAX+(val))
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#define UINT32_C(val) (UINT_LEAST32_MAX-UINT_LEAST32_MAX+(val))
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#define UINT64_C(val) (UINT_LEAST64_MAX-UINT_LEAST64_MAX+(val))
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/* 7.18.4.2 Macros for greatest-width integer constants */
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#define INTMAX_C(val) (INTMAX_MAX-INTMAX_MAX+(val))
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#define UINTMAX_C(val) (UINTMAX_MAX-UINTMAX_MAX+(val))
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#endif /* !defined ( __cplusplus) || defined __STDC_CONSTANT_MACROS */
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#endif
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