Steve Ravet / fixedpoint

A fixed point library from Trenki http://www.trenki.net/content/view/17/1/ Slightly modified so that the fixed point data structure can automatically cast itself to float or int when used in an expression.

stdint.h@0:aa2871c4c041, 2010-10-20 (annotated)

Committer:
sravet
Date:
Wed Oct 20 02:20:46 2010 +0000
Revision:
0:aa2871c4c041
First checkin.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sravet 0:aa2871c4c041 1 /* ISO C9x 7.18 Integer types <stdint.h>
sravet 0:aa2871c4c041 2 * Based on ISO/IEC SC22/WG14 9899 Committee draft (SC22 N2794)
sravet 0:aa2871c4c041 3 *
sravet 0:aa2871c4c041 4 * THIS SOFTWARE IS NOT COPYRIGHTED
sravet 0:aa2871c4c041 5 *
sravet 0:aa2871c4c041 6 * Contributor: Danny Smith <danny_r_smith_2001@yahoo.co.nz>
sravet 0:aa2871c4c041 7 *
sravet 0:aa2871c4c041 8 * This source code is offered for use in the public domain. You may
sravet 0:aa2871c4c041 9 * use, modify or distribute it freely.
sravet 0:aa2871c4c041 10 *
sravet 0:aa2871c4c041 11 * This code is distributed in the hope that it will be useful but
sravet 0:aa2871c4c041 12 * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
sravet 0:aa2871c4c041 13 * DISCLAIMED. This includes but is not limited to warranties of
sravet 0:aa2871c4c041 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
sravet 0:aa2871c4c041 15 *
sravet 0:aa2871c4c041 16 * Date: 2000-12-02
sravet 0:aa2871c4c041 17 */
sravet 0:aa2871c4c041 18
sravet 0:aa2871c4c041 19
sravet 0:aa2871c4c041 20 #ifndef _STDINT_H
sravet 0:aa2871c4c041 21 #define _STDINT_H
sravet 0:aa2871c4c041 22 #define __need_wint_t
sravet 0:aa2871c4c041 23 #define __need_wchar_t
sravet 0:aa2871c4c041 24 #include <stddef.h>
sravet 0:aa2871c4c041 25
sravet 0:aa2871c4c041 26 /* 7.18.1.1 Exact-width integer types */
sravet 0:aa2871c4c041 27 typedef signed char int8_t;
sravet 0:aa2871c4c041 28 typedef unsigned char uint8_t;
sravet 0:aa2871c4c041 29 typedef short int16_t;
sravet 0:aa2871c4c041 30 typedef unsigned short uint16_t;
sravet 0:aa2871c4c041 31 typedef int int32_t;
sravet 0:aa2871c4c041 32 typedef unsigned uint32_t;
sravet 0:aa2871c4c041 33 typedef long long int64_t;
sravet 0:aa2871c4c041 34 typedef unsigned long long uint64_t;
sravet 0:aa2871c4c041 35
sravet 0:aa2871c4c041 36 /* 7.18.1.2 Minimum-width integer types */
sravet 0:aa2871c4c041 37 typedef signed char int_least8_t;
sravet 0:aa2871c4c041 38 typedef unsigned char uint_least8_t;
sravet 0:aa2871c4c041 39 typedef short int_least16_t;
sravet 0:aa2871c4c041 40 typedef unsigned short uint_least16_t;
sravet 0:aa2871c4c041 41 typedef int int_least32_t;
sravet 0:aa2871c4c041 42 typedef unsigned uint_least32_t;
sravet 0:aa2871c4c041 43 typedef long long int_least64_t;
sravet 0:aa2871c4c041 44 typedef unsigned long long uint_least64_t;
sravet 0:aa2871c4c041 45
sravet 0:aa2871c4c041 46 /* 7.18.1.3 Fastest minimum-width integer types
sravet 0:aa2871c4c041 47 * Not actually guaranteed to be fastest for all purposes
sravet 0:aa2871c4c041 48 * Here we use the exact-width types for 8 and 16-bit ints.
sravet 0:aa2871c4c041 49 */
sravet 0:aa2871c4c041 50 typedef char int_fast8_t;
sravet 0:aa2871c4c041 51 typedef unsigned char uint_fast8_t;
sravet 0:aa2871c4c041 52 typedef short int_fast16_t;
sravet 0:aa2871c4c041 53 typedef unsigned short uint_fast16_t;
sravet 0:aa2871c4c041 54 typedef int int_fast32_t;
sravet 0:aa2871c4c041 55 typedef unsigned int uint_fast32_t;
sravet 0:aa2871c4c041 56 typedef long long int_fast64_t;
sravet 0:aa2871c4c041 57 typedef unsigned long long uint_fast64_t;
sravet 0:aa2871c4c041 58
sravet 0:aa2871c4c041 59 /* 7.18.1.4 Integer types capable of holding object pointers */
sravet 0:aa2871c4c041 60 typedef int intptr_t;
sravet 0:aa2871c4c041 61 typedef unsigned uintptr_t;
sravet 0:aa2871c4c041 62
sravet 0:aa2871c4c041 63 /* 7.18.1.5 Greatest-width integer types */
sravet 0:aa2871c4c041 64 typedef long long intmax_t;
sravet 0:aa2871c4c041 65 typedef unsigned long long uintmax_t;
sravet 0:aa2871c4c041 66
sravet 0:aa2871c4c041 67 /* 7.18.2 Limits of specified-width integer types */
sravet 0:aa2871c4c041 68 #if !defined ( __cplusplus) || defined (__STDC_LIMIT_MACROS)
sravet 0:aa2871c4c041 69
sravet 0:aa2871c4c041 70 /* 7.18.2.1 Limits of exact-width integer types */
sravet 0:aa2871c4c041 71 #define INT8_MIN (-128)
sravet 0:aa2871c4c041 72 #define INT16_MIN (-32768)
sravet 0:aa2871c4c041 73 #define INT32_MIN (-2147483647 - 1)
sravet 0:aa2871c4c041 74 #define INT64_MIN (-9223372036854775807LL - 1)
sravet 0:aa2871c4c041 75
sravet 0:aa2871c4c041 76 #define INT8_MAX 127
sravet 0:aa2871c4c041 77 #define INT16_MAX 32767
sravet 0:aa2871c4c041 78 #define INT32_MAX 2147483647
sravet 0:aa2871c4c041 79 #define INT64_MAX 9223372036854775807LL
sravet 0:aa2871c4c041 80
sravet 0:aa2871c4c041 81 #define UINT8_MAX 0xff /* 255U */
sravet 0:aa2871c4c041 82 #define UINT16_MAX 0xffff /* 65535U */
sravet 0:aa2871c4c041 83 #define UINT32_MAX 0xffffffff /* 4294967295U */
sravet 0:aa2871c4c041 84 #define UINT64_MAX 0xffffffffffffffffULL /* 18446744073709551615ULL */
sravet 0:aa2871c4c041 85
sravet 0:aa2871c4c041 86 /* 7.18.2.2 Limits of minimum-width integer types */
sravet 0:aa2871c4c041 87 #define INT_LEAST8_MIN INT8_MIN
sravet 0:aa2871c4c041 88 #define INT_LEAST16_MIN INT16_MIN
sravet 0:aa2871c4c041 89 #define INT_LEAST32_MIN INT32_MIN
sravet 0:aa2871c4c041 90 #define INT_LEAST64_MIN INT64_MIN
sravet 0:aa2871c4c041 91
sravet 0:aa2871c4c041 92 #define INT_LEAST8_MAX INT8_MAX
sravet 0:aa2871c4c041 93 #define INT_LEAST16_MAX INT16_MAX
sravet 0:aa2871c4c041 94 #define INT_LEAST32_MAX INT32_MAX
sravet 0:aa2871c4c041 95 #define INT_LEAST64_MAX INT64_MAX
sravet 0:aa2871c4c041 96
sravet 0:aa2871c4c041 97 #define UINT_LEAST8_MAX UINT8_MAX
sravet 0:aa2871c4c041 98 #define UINT_LEAST16_MAX UINT16_MAX
sravet 0:aa2871c4c041 99 #define UINT_LEAST32_MAX UINT32_MAX
sravet 0:aa2871c4c041 100 #define UINT_LEAST64_MAX UINT64_MAX
sravet 0:aa2871c4c041 101
sravet 0:aa2871c4c041 102 /* 7.18.2.3 Limits of fastest minimum-width integer types */
sravet 0:aa2871c4c041 103 #define INT_FAST8_MIN INT8_MIN
sravet 0:aa2871c4c041 104 #define INT_FAST16_MIN INT16_MIN
sravet 0:aa2871c4c041 105 #define INT_FAST32_MIN INT32_MIN
sravet 0:aa2871c4c041 106 #define INT_FAST64_MIN INT64_MIN
sravet 0:aa2871c4c041 107
sravet 0:aa2871c4c041 108 #define INT_FAST8_MAX INT8_MAX
sravet 0:aa2871c4c041 109 #define INT_FAST16_MAX INT16_MAX
sravet 0:aa2871c4c041 110 #define INT_FAST32_MAX INT32_MAX
sravet 0:aa2871c4c041 111 #define INT_FAST64_MAX INT64_MAX
sravet 0:aa2871c4c041 112
sravet 0:aa2871c4c041 113 #define UINT_FAST8_MAX UINT8_MAX
sravet 0:aa2871c4c041 114 #define UINT_FAST16_MAX UINT16_MAX
sravet 0:aa2871c4c041 115 #define UINT_FAST32_MAX UINT32_MAX
sravet 0:aa2871c4c041 116 #define UINT_FAST64_MAX UINT64_MAX
sravet 0:aa2871c4c041 117
sravet 0:aa2871c4c041 118 /* 7.18.2.4 Limits of integer types capable of holding
sravet 0:aa2871c4c041 119 object pointers */
sravet 0:aa2871c4c041 120 #define INTPTR_MIN INT32_MIN
sravet 0:aa2871c4c041 121 #define INTPTR_MAX INT32_MAX
sravet 0:aa2871c4c041 122 #define UINTPTR_MAX UINT32_MAX
sravet 0:aa2871c4c041 123
sravet 0:aa2871c4c041 124 /* 7.18.2.5 Limits of greatest-width integer types */
sravet 0:aa2871c4c041 125 #define INTMAX_MIN INT64_MIN
sravet 0:aa2871c4c041 126 #define INTMAX_MAX INT64_MAX
sravet 0:aa2871c4c041 127 #define UINTMAX_MAX UINT64_MAX
sravet 0:aa2871c4c041 128
sravet 0:aa2871c4c041 129 /* 7.18.3 Limits of other integer types */
sravet 0:aa2871c4c041 130 #define PTRDIFF_MIN INT32_MIN
sravet 0:aa2871c4c041 131 #define PTRDIFF_MAX INT32_MAX
sravet 0:aa2871c4c041 132
sravet 0:aa2871c4c041 133 #define SIG_ATOMIC_MIN INT32_MIN
sravet 0:aa2871c4c041 134 #define SIG_ATOMIC_MAX INT32_MAX
sravet 0:aa2871c4c041 135
sravet 0:aa2871c4c041 136 #define SIZE_MAX UINT32_MAX
sravet 0:aa2871c4c041 137
sravet 0:aa2871c4c041 138 #ifndef WCHAR_MIN /* also in wchar.h */
sravet 0:aa2871c4c041 139 #define WCHAR_MIN 0
sravet 0:aa2871c4c041 140 #define WCHAR_MAX 0xffff /* UINT16_MAX */
sravet 0:aa2871c4c041 141 #endif
sravet 0:aa2871c4c041 142
sravet 0:aa2871c4c041 143 /*
sravet 0:aa2871c4c041 144 * wint_t is unsigned short for compatibility with MS runtime
sravet 0:aa2871c4c041 145 */
sravet 0:aa2871c4c041 146 #define WINT_MIN 0
sravet 0:aa2871c4c041 147 #define WINT_MAX 0xffff /* UINT16_MAX */
sravet 0:aa2871c4c041 148
sravet 0:aa2871c4c041 149 #endif /* !defined ( __cplusplus) || defined __STDC_LIMIT_MACROS */
sravet 0:aa2871c4c041 150
sravet 0:aa2871c4c041 151
sravet 0:aa2871c4c041 152 /* 7.18.4 Macros for integer constants */
sravet 0:aa2871c4c041 153 #if !defined ( __cplusplus) || defined (__STDC_CONSTANT_MACROS)
sravet 0:aa2871c4c041 154
sravet 0:aa2871c4c041 155 /* 7.18.4.1 Macros for minimum-width integer constants
sravet 0:aa2871c4c041 156
sravet 0:aa2871c4c041 157 Accoding to Douglas Gwyn <gwyn@arl.mil>:
sravet 0:aa2871c4c041 158 "This spec was changed in ISO/IEC 9899:1999 TC1; in ISO/IEC
sravet 0:aa2871c4c041 159 9899:1999 as initially published, the expansion was required
sravet 0:aa2871c4c041 160 to be an integer constant of precisely matching type, which
sravet 0:aa2871c4c041 161 is impossible to accomplish for the shorter types on most
sravet 0:aa2871c4c041 162 platforms, because C99 provides no standard way to designate
sravet 0:aa2871c4c041 163 an integer constant with width less than that of type int.
sravet 0:aa2871c4c041 164 TC1 changed this to require just an integer constant
sravet 0:aa2871c4c041 165 *expression* with *promoted* type."
sravet 0:aa2871c4c041 166 */
sravet 0:aa2871c4c041 167
sravet 0:aa2871c4c041 168 #define INT8_C(val) ((int8_t) + (val))
sravet 0:aa2871c4c041 169 #define UINT8_C(val) ((uint8_t) + (val##U))
sravet 0:aa2871c4c041 170 #define INT16_C(val) ((int16_t) + (val))
sravet 0:aa2871c4c041 171 #define UINT16_C(val) ((uint16_t) + (val##U))
sravet 0:aa2871c4c041 172
sravet 0:aa2871c4c041 173 #define INT32_C(val) val##L
sravet 0:aa2871c4c041 174 #define UINT32_C(val) val##UL
sravet 0:aa2871c4c041 175 #define INT64_C(val) val##LL
sravet 0:aa2871c4c041 176 #define UINT64_C(val) val##ULL
sravet 0:aa2871c4c041 177
sravet 0:aa2871c4c041 178 /* 7.18.4.2 Macros for greatest-width integer constants */
sravet 0:aa2871c4c041 179 #define INTMAX_C(val) INT64_C(val)
sravet 0:aa2871c4c041 180 #define UINTMAX_C(val) UINT64_C(val)
sravet 0:aa2871c4c041 181
sravet 0:aa2871c4c041 182 #endif /* !defined ( __cplusplus) || defined __STDC_CONSTANT_MACROS */
sravet 0:aa2871c4c041 183
sravet 0:aa2871c4c041 184 #endif