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annotate gcc/glimits.h @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 1830386684a0
children
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1830386684a0 gcc-9.2.0
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1 /* Copyright (C) 1991-2020 Free Software Foundation, Inc.
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2
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3 This file is part of GCC.
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4
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5 GCC is free software; you can redistribute it and/or modify it under
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6 the terms of the GNU General Public License as published by the Free
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7 Software Foundation; either version 3, or (at your option) any later
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8 version.
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9
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10 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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11 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 for more details.
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14
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15 Under Section 7 of GPL version 3, you are granted additional
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16 permissions described in the GCC Runtime Library Exception, version
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17 3.1, as published by the Free Software Foundation.
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18
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19 You should have received a copy of the GNU General Public License and
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20 a copy of the GCC Runtime Library Exception along with this program;
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21 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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22 <http://www.gnu.org/licenses/>. */
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23
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24 #ifndef _LIMITS_H___
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25 #define _LIMITS_H___
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26
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27 /* Number of bits in a `char'. */
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28 #undef CHAR_BIT
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29 #define CHAR_BIT __CHAR_BIT__
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30
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31 /* Maximum length of a multibyte character. */
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32 #ifndef MB_LEN_MAX
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33 #define MB_LEN_MAX 1
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34 #endif
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35
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36 /* Minimum and maximum values a `signed char' can hold. */
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37 #undef SCHAR_MIN
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38 #define SCHAR_MIN (-SCHAR_MAX - 1)
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39 #undef SCHAR_MAX
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40 #define SCHAR_MAX __SCHAR_MAX__
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41
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42 /* Maximum value an `unsigned char' can hold. (Minimum is 0). */
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43 #undef UCHAR_MAX
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44 #if __SCHAR_MAX__ == __INT_MAX__
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45 # define UCHAR_MAX (SCHAR_MAX * 2U + 1U)
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46 #else
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47 # define UCHAR_MAX (SCHAR_MAX * 2 + 1)
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48 #endif
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49
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50 /* Minimum and maximum values a `char' can hold. */
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51 #ifdef __CHAR_UNSIGNED__
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52 # undef CHAR_MIN
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53 # if __SCHAR_MAX__ == __INT_MAX__
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54 # define CHAR_MIN 0U
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55 # else
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56 # define CHAR_MIN 0
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57 # endif
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58 # undef CHAR_MAX
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59 # define CHAR_MAX UCHAR_MAX
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60 #else
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61 # undef CHAR_MIN
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62 # define CHAR_MIN SCHAR_MIN
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63 # undef CHAR_MAX
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64 # define CHAR_MAX SCHAR_MAX
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65 #endif
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66
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67 /* Minimum and maximum values a `signed short int' can hold. */
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68 #undef SHRT_MIN
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69 #define SHRT_MIN (-SHRT_MAX - 1)
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70 #undef SHRT_MAX
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71 #define SHRT_MAX __SHRT_MAX__
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72
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73 /* Maximum value an `unsigned short int' can hold. (Minimum is 0). */
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74 #undef USHRT_MAX
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75 #if __SHRT_MAX__ == __INT_MAX__
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76 # define USHRT_MAX (SHRT_MAX * 2U + 1U)
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77 #else
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78 # define USHRT_MAX (SHRT_MAX * 2 + 1)
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79 #endif
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80
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81 /* Minimum and maximum values a `signed int' can hold. */
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82 #undef INT_MIN
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83 #define INT_MIN (-INT_MAX - 1)
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84 #undef INT_MAX
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85 #define INT_MAX __INT_MAX__
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86
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87 /* Maximum value an `unsigned int' can hold. (Minimum is 0). */
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88 #undef UINT_MAX
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89 #define UINT_MAX (INT_MAX * 2U + 1U)
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90
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91 /* Minimum and maximum values a `signed long int' can hold.
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92 (Same as `int'). */
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93 #undef LONG_MIN
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94 #define LONG_MIN (-LONG_MAX - 1L)
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95 #undef LONG_MAX
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96 #define LONG_MAX __LONG_MAX__
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97
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98 /* Maximum value an `unsigned long int' can hold. (Minimum is 0). */
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99 #undef ULONG_MAX
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100 #define ULONG_MAX (LONG_MAX * 2UL + 1UL)
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101
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102 #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
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103 /* Minimum and maximum values a `signed long long int' can hold. */
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104 # undef LLONG_MIN
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105 # define LLONG_MIN (-LLONG_MAX - 1LL)
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106 # undef LLONG_MAX
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107 # define LLONG_MAX __LONG_LONG_MAX__
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108
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109 /* Maximum value an `unsigned long long int' can hold. (Minimum is 0). */
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110 # undef ULLONG_MAX
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111 # define ULLONG_MAX (LLONG_MAX * 2ULL + 1ULL)
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112 #endif
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113
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114 #if defined (__GNU_LIBRARY__) ? defined (__USE_GNU) : !defined (__STRICT_ANSI__)
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115 /* Minimum and maximum values a `signed long long int' can hold. */
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116 # undef LONG_LONG_MIN
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117 # define LONG_LONG_MIN (-LONG_LONG_MAX - 1LL)
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118 # undef LONG_LONG_MAX
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119 # define LONG_LONG_MAX __LONG_LONG_MAX__
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120
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121 /* Maximum value an `unsigned long long int' can hold. (Minimum is 0). */
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122 # undef ULONG_LONG_MAX
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123 # define ULONG_LONG_MAX (LONG_LONG_MAX * 2ULL + 1ULL)
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124 #endif
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125
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126 #if (defined __STDC_WANT_IEC_60559_BFP_EXT__ \
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127 || (defined (__STDC_VERSION__) && __STDC_VERSION__ > 201710L))
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128 /* TS 18661-1 / C2X widths of integer types. */
111
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129 # undef CHAR_WIDTH
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130 # define CHAR_WIDTH __SCHAR_WIDTH__
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131 # undef SCHAR_WIDTH
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132 # define SCHAR_WIDTH __SCHAR_WIDTH__
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133 # undef UCHAR_WIDTH
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134 # define UCHAR_WIDTH __SCHAR_WIDTH__
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135 # undef SHRT_WIDTH
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136 # define SHRT_WIDTH __SHRT_WIDTH__
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137 # undef USHRT_WIDTH
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138 # define USHRT_WIDTH __SHRT_WIDTH__
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139 # undef INT_WIDTH
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140 # define INT_WIDTH __INT_WIDTH__
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141 # undef UINT_WIDTH
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142 # define UINT_WIDTH __INT_WIDTH__
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143 # undef LONG_WIDTH
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144 # define LONG_WIDTH __LONG_WIDTH__
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145 # undef ULONG_WIDTH
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146 # define ULONG_WIDTH __LONG_WIDTH__
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147 # undef LLONG_WIDTH
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148 # define LLONG_WIDTH __LONG_LONG_WIDTH__
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149 # undef ULLONG_WIDTH
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150 # define ULLONG_WIDTH __LONG_LONG_WIDTH__
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151 #endif
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152
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153 #endif /* _LIMITS_H___ */