1 | /* Copyright (C) 1991, 92, 96, 97, 98, 99, 2000 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |
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3 | |
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4 | The GNU C Library is free software; you can redistribute it and/or |
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5 | modify it under the terms of the GNU Lesser General Public |
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6 | License as published by the Free Software Foundation; either |
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7 | version 2.1 of the License, or (at your option) any later version. |
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8 | |
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9 | The GNU C Library is distributed in the hope that it will be useful, |
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10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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12 | Lesser General Public License for more details. |
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13 | |
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14 | You should have received a copy of the GNU Lesser General Public |
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15 | License along with the GNU C Library; if not, write to the Free |
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16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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17 | 02111-1307 USA. */ |
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18 | |
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19 | /* |
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20 | * ISO C99 Standard: 7.10/5.2.4.2.1 Sizes of integer types <limits.h> |
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21 | */ |
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22 | |
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23 | #ifndef _LIBC_LIMITS_H_ |
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24 | #define _LIBC_LIMITS_H_ 1 |
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25 | |
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26 | #include <features.h> |
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27 | |
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28 | |
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29 | /* Maximum length of any multibyte character in any locale. |
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30 | We define this value here since the gcc header does not define |
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31 | the correct value. */ |
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32 | #define MB_LEN_MAX 16 |
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33 | |
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34 | |
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35 | /* If we are not using GNU CC we have to define all the symbols ourself. |
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36 | Otherwise use gcc's definitions (see below). */ |
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37 | #if !defined __GNUC__ || __GNUC__ < 2 |
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38 | |
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39 | /* We only protect from multiple inclusion here, because all the other |
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40 | #include's protect themselves, and in GCC 2 we may #include_next through |
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41 | multiple copies of this file before we get to GCC's. */ |
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42 | # ifndef _LIMITS_H |
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43 | # define _LIMITS_H 1 |
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44 | |
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45 | #include <bits/wordsize.h> |
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46 | |
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47 | /* We don't have #include_next. |
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48 | Define ANSI <limits.h> for standard 32-bit words. */ |
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49 | |
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50 | /* These assume 8-bit `char's, 16-bit `short int's, |
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51 | and 32-bit `int's and `long int's. */ |
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52 | |
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53 | /* Number of bits in a `char'. */ |
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54 | # define CHAR_BIT 8 |
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55 | |
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56 | /* Minimum and maximum values a `signed char' can hold. */ |
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57 | # define SCHAR_MIN (-128) |
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58 | # define SCHAR_MAX 127 |
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59 | |
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60 | /* Maximum value an `unsigned char' can hold. (Minimum is 0.) */ |
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61 | # define UCHAR_MAX 255 |
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62 | |
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63 | /* Minimum and maximum values a `char' can hold. */ |
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64 | # ifdef __CHAR_UNSIGNED__ |
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65 | # define CHAR_MIN 0 |
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66 | # define CHAR_MAX UCHAR_MAX |
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67 | # else |
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68 | # define CHAR_MIN SCHAR_MIN |
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69 | # define CHAR_MAX SCHAR_MAX |
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70 | # endif |
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71 | |
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72 | /* Minimum and maximum values a `signed short int' can hold. */ |
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73 | # define SHRT_MIN (-32768) |
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74 | # define SHRT_MAX 32767 |
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75 | |
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76 | /* Maximum value an `unsigned short int' can hold. (Minimum is 0.) */ |
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77 | # define USHRT_MAX 65535 |
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78 | |
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79 | /* Minimum and maximum values a `signed int' can hold. */ |
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80 | # define INT_MIN (-INT_MAX - 1) |
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81 | # define INT_MAX 2147483647 |
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82 | |
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83 | /* Maximum value an `unsigned int' can hold. (Minimum is 0.) */ |
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84 | # define UINT_MAX 4294967295U |
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85 | |
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86 | /* Minimum and maximum values a `signed long int' can hold. */ |
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87 | # if __WORDSIZE == 64 |
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88 | # define LONG_MAX 9223372036854775807L |
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89 | # else |
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90 | # define LONG_MAX 2147483647L |
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91 | # endif |
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92 | # define LONG_MIN (-LONG_MAX - 1L) |
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93 | |
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94 | /* Maximum value an `unsigned long int' can hold. (Minimum is 0.) */ |
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95 | # if __WORDSIZE == 64 |
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96 | # define ULONG_MAX 18446744073709551615UL |
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97 | # else |
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98 | # define ULONG_MAX 4294967295UL |
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99 | # endif |
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100 | |
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101 | # ifdef __USE_ISOC99 |
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102 | |
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103 | /* Minimum and maximum values a `signed long long int' can hold. */ |
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104 | # define LLONG_MAX 9223372036854775807LL |
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105 | # define LLONG_MIN (-LLONG_MAX - 1LL) |
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106 | |
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107 | /* Maximum value an `unsigned long long int' can hold. (Minimum is 0.) */ |
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108 | # define ULLONG_MAX 18446744073709551615ULL |
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109 | |
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110 | # endif /* ISO C99 */ |
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111 | |
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112 | # endif /* limits.h */ |
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113 | #endif /* GCC 2. */ |
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114 | |
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115 | #endif /* !_LIBC_LIMITS_H_ */ |
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116 | |
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117 | /* Get the compiler's limits.h, which defines almost all the ISO constants. |
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118 | |
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119 | We put this #include_next outside the double inclusion check because |
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120 | it should be possible to include this file more than once and still get |
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121 | the definitions from gcc's header. */ |
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122 | #if defined __GNUC__ && !defined _GCC_LIMITS_H_ |
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123 | /* `_GCC_LIMITS_H_' is what GCC's file defines. */ |
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124 | # include_next <limits.h> |
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125 | |
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126 | /* The <limits.h> files in some gcc versions don't define LLONG_MIN, |
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127 | LLONG_MAX, and ULLONG_MAX. Instead only the values gcc defined for |
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128 | ages are available. */ |
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129 | # ifdef __USE_ISOC99 |
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130 | # ifndef LLONG_MIN |
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131 | # define LLONG_MIN LONG_LONG_MIN |
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132 | # endif |
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133 | # ifndef LLONG_MAX |
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134 | # define LLONG_MAX LONG_LONG_MAX |
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135 | # endif |
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136 | # ifndef ULLONG_MAX |
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137 | # define ULLONG_MAX ULONG_LONG_MAX |
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138 | # endif |
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139 | # endif |
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140 | #endif |
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141 | |
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142 | #include <linux/limits.h> |
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143 | |
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144 | #ifdef __USE_POSIX |
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145 | /* POSIX adds things to <limits.h>. */ |
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146 | # include <bits/posix1_lim.h> |
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147 | #endif |
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148 | |
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149 | #ifdef __USE_POSIX2 |
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150 | # include <bits/posix2_lim.h> |
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151 | #endif |
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152 | |
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153 | #ifdef __USE_XOPEN |
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154 | # include <bits/xopen_lim.h> |
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155 | #endif |
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156 | |
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