1 | #ifndef _LIMITS_H
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2 | #define _LIMITS_H
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3 |
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4 | #include <features.h>
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5 |
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6 | /* Most limits are system-specific */
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7 |
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8 | #include <bits/limits.h>
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9 |
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10 | /* Support signed or unsigned plain-char */
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11 |
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12 | #if '\0'-1 > 0
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13 | #define CHAR_MIN 0
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14 | #define CHAR_MAX 255
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15 | #else
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16 | #define CHAR_MIN (-128)
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17 | #define CHAR_MAX 127
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18 | #endif
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19 |
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20 | /* Some universal constants... */
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21 |
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22 | #define CHAR_BIT 8
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23 | #define SCHAR_MIN (-128)
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24 | #define SCHAR_MAX 127
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25 | #define UCHAR_MAX 255
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26 | #define SHRT_MIN (-1-0x7fff)
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27 | #define SHRT_MAX 0x7fff
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28 | #define USHRT_MAX 0xffff
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29 | #define INT_MIN (-1-0x7fffffff)
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30 | #define INT_MAX 0x7fffffff
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31 | #define UINT_MAX 0xffffffffU
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32 | #define LONG_MIN (-LONG_MAX-1)
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33 | #define ULONG_MAX (2UL*LONG_MAX+1)
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34 | #define LLONG_MIN (-LLONG_MAX-1)
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35 | #define ULLONG_MAX (2ULL*LLONG_MAX+1)
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36 |
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37 | #define MB_LEN_MAX 4
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38 |
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39 | #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
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40 | || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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41 |
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42 | #define PIPE_BUF 4096
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43 | #ifdef PAGE_SIZE
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44 | #define PAGESIZE PAGE_SIZE
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45 | #endif
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46 | #define FILESIZEBITS 64
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47 | #define NAME_MAX 255
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48 | #define SYMLINK_MAX 255
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49 | #define PATH_MAX 4096
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50 | #define NZERO 20
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51 | #define NGROUPS_MAX 32
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52 | #define ARG_MAX 131072
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53 | #define IOV_MAX 1024
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54 | #define SYMLOOP_MAX 40
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55 | #define WORD_BIT 32
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56 | #define SSIZE_MAX LONG_MAX
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57 | #define TZNAME_MAX 6
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58 | #define TTY_NAME_MAX 32
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59 | #define HOST_NAME_MAX 255
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60 |
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61 | /* Implementation choices... */
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62 |
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63 | #define PTHREAD_KEYS_MAX 128
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64 | #define PTHREAD_STACK_MIN 2048
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65 | #define PTHREAD_DESTRUCTOR_ITERATIONS 4
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66 | #define SEM_VALUE_MAX 0x7fffffff
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67 | #define SEM_NSEMS_MAX 256
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68 | #define DELAYTIMER_MAX 0x7fffffff
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69 | #define MQ_PRIO_MAX 32768
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70 | #define LOGIN_NAME_MAX 256
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71 |
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72 | /* Arbitrary numbers... */
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73 |
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74 | #define BC_BASE_MAX 99
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75 | #define BC_DIM_MAX 2048
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76 | #define BC_SCALE_MAX 99
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77 | #define BC_STRING_MAX 1000
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78 | #define CHARCLASS_NAME_MAX 14
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79 | #define COLL_WEIGHTS_MAX 2
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80 | #define EXPR_NEST_MAX 32
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81 | #define LINE_MAX 4096
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82 | #define RE_DUP_MAX 255
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83 |
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84 | #define NL_ARGMAX 9
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85 | #define NL_LANGMAX 32
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86 | #define NL_MSGMAX 32767
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87 | #define NL_SETMAX 255
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88 | #define NL_TEXTMAX 2048
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89 |
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90 | #endif
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91 |
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92 | #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) \
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93 | || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 < 700)
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94 |
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95 | #define NL_NMAX 16
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96 |
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97 | #endif
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98 |
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99 | /* POSIX/SUS requirements follow. These numbers come directly
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100 | * from SUS and have nothing to do with the host system. */
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101 |
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102 | #define _POSIX_AIO_LISTIO_MAX 2
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103 | #define _POSIX_AIO_MAX 1
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104 | #define _POSIX_ARG_MAX 4096
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105 | #define _POSIX_CHILD_MAX 25
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106 | #define _POSIX_CLOCKRES_MIN 20000000
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107 | #define _POSIX_DELAYTIMER_MAX 32
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108 | #define _POSIX_HOST_NAME_MAX 255
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109 | #define _POSIX_LINK_MAX 8
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110 | #define _POSIX_LOGIN_NAME_MAX 9
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111 | #define _POSIX_MAX_CANON 255
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112 | #define _POSIX_MAX_INPUT 255
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113 | #define _POSIX_MQ_OPEN_MAX 8
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114 | #define _POSIX_MQ_PRIO_MAX 32
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115 | #define _POSIX_NAME_MAX 14
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116 | #define _POSIX_NGROUPS_MAX 8
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117 | #define _POSIX_OPEN_MAX 20
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118 | #define _POSIX_PATH_MAX 256
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119 | #define _POSIX_PIPE_BUF 512
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120 | #define _POSIX_RE_DUP_MAX 255
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121 | #define _POSIX_RTSIG_MAX 8
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122 | #define _POSIX_SEM_NSEMS_MAX 256
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123 | #define _POSIX_SEM_VALUE_MAX 32767
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124 | #define _POSIX_SIGQUEUE_MAX 32
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125 | #define _POSIX_SSIZE_MAX 32767
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126 | #define _POSIX_STREAM_MAX 8
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127 | #define _POSIX_SS_REPL_MAX 4
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128 | #define _POSIX_SYMLINK_MAX 255
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129 | #define _POSIX_SYMLOOP_MAX 8
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130 | #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
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131 | #define _POSIX_THREAD_KEYS_MAX 128
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132 | #define _POSIX_THREAD_THREADS_MAX 64
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133 | #define _POSIX_TIMER_MAX 32
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134 | #define _POSIX_TRACE_EVENT_NAME_MAX 30
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135 | #define _POSIX_TRACE_NAME_MAX 8
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136 | #define _POSIX_TRACE_SYS_MAX 8
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137 | #define _POSIX_TRACE_USER_EVENT_MAX 32
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138 | #define _POSIX_TTY_NAME_MAX 9
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139 | #define _POSIX_TZNAME_MAX 6
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140 | #define _POSIX2_BC_BASE_MAX 99
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141 | #define _POSIX2_BC_DIM_MAX 2048
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142 | #define _POSIX2_BC_SCALE_MAX 99
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143 | #define _POSIX2_BC_STRING_MAX 1000
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144 | #define _POSIX2_CHARCLASS_NAME_MAX 14
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145 | #define _POSIX2_COLL_WEIGHTS_MAX 2
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146 | #define _POSIX2_EXPR_NEST_MAX 32
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147 | #define _POSIX2_LINE_MAX 2048
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148 | #define _POSIX2_RE_DUP_MAX 255
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149 |
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150 | #define _XOPEN_IOV_MAX 16
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151 | #define _XOPEN_NAME_MAX 255
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152 | #define _XOPEN_PATH_MAX 1024
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153 |
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154 | #endif
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