1 /* This administrivia gets added to the beginning of limits.h 2 if the system has its own version of limits.h. */ 3 4 /* We use _GCC_LIMITS_H_ because we want this not to match 5 any macros that the system's limits.h uses for its own purposes. */ 6 #ifndef _GCC_LIMITS_H_ /* Terminated in limity.h. */ 7 #define _GCC_LIMITS_H_ 8 9 #ifndef _LIBC_LIMITS_H_ 10 /* Use "..." so that we find syslimits.h only in this same directory. */ 11 #include "syslimits.h" 12 #endif 13 #ifndef _LIMITS_H___ 14 #define _LIMITS_H___ 15 16 /* Number of bits in a `char'. */ 17 #undef CHAR_BIT 18 #define CHAR_BIT __CHAR_BIT__ 19 20 /* Maximum length of a multibyte character. */ 21 #ifndef MB_LEN_MAX 22 #define MB_LEN_MAX 1 23 #endif 24 25 /* Minimum and maximum values a `signed char' can hold. */ 26 #undef SCHAR_MIN 27 #define SCHAR_MIN (-SCHAR_MAX - 1) 28 #undef SCHAR_MAX 29 #define SCHAR_MAX __SCHAR_MAX__ 30 31 /* Maximum value an `unsigned char' can hold. (Minimum is 0). */ 32 #undef UCHAR_MAX 33 #if __SCHAR_MAX__ == __INT_MAX__ 34 # define UCHAR_MAX (SCHAR_MAX * 2U + 1U) 35 #else 36 # define UCHAR_MAX (SCHAR_MAX * 2 + 1) 37 #endif 38 39 /* Minimum and maximum values a `char' can hold. */ 40 #ifdef __CHAR_UNSIGNED__ 41 # undef CHAR_MIN 42 # if __SCHAR_MAX__ == __INT_MAX__ 43 # define CHAR_MIN 0U 44 # else 45 # define CHAR_MIN 0 46 # endif 47 # undef CHAR_MAX 48 # define CHAR_MAX UCHAR_MAX 49 #else 50 # undef CHAR_MIN 51 # define CHAR_MIN SCHAR_MIN 52 # undef CHAR_MAX 53 # define CHAR_MAX SCHAR_MAX 54 #endif 55 56 /* Minimum and maximum values a `signed short int' can hold. */ 57 #undef SHRT_MIN 58 #define SHRT_MIN (-SHRT_MAX - 1) 59 #undef SHRT_MAX 60 #define SHRT_MAX __SHRT_MAX__ 61 62 /* Maximum value an `unsigned short int' can hold. (Minimum is 0). */ 63 #undef USHRT_MAX 64 #if __SHRT_MAX__ == __INT_MAX__ 65 # define USHRT_MAX (SHRT_MAX * 2U + 1U) 66 #else 67 # define USHRT_MAX (SHRT_MAX * 2 + 1) 68 #endif 69 70 /* Minimum and maximum values a `signed int' can hold. */ 71 #undef INT_MIN 72 #define INT_MIN (-INT_MAX - 1) 73 #undef INT_MAX 74 #define INT_MAX __INT_MAX__ 75 76 /* Maximum value an `unsigned int' can hold. (Minimum is 0). */ 77 #undef UINT_MAX 78 #define UINT_MAX (INT_MAX * 2U + 1U) 79 80 /* Minimum and maximum values a `signed long int' can hold. 81 (Same as `int'). */ 82 #undef LONG_MIN 83 #define LONG_MIN (-LONG_MAX - 1L) 84 #undef LONG_MAX 85 #define LONG_MAX __LONG_MAX__ 86 87 /* Maximum value an `unsigned long int' can hold. (Minimum is 0). */ 88 #undef ULONG_MAX 89 #define ULONG_MAX (LONG_MAX * 2UL + 1UL) 90 91 #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L 92 /* Minimum and maximum values a `signed long long int' can hold. */ 93 # undef LLONG_MIN 94 # define LLONG_MIN (-LLONG_MAX - 1LL) 95 # undef LLONG_MAX 96 # define LLONG_MAX __LONG_LONG_MAX__ 97 98 /* Maximum value an `unsigned long long int' can hold. (Minimum is 0). */ 99 # undef ULLONG_MAX 100 # define ULLONG_MAX (LLONG_MAX * 2ULL + 1ULL) 101 #endif 102 103 #if defined (__GNU_LIBRARY__) ? defined (__USE_GNU) : !defined (__STRICT_ANSI__) 104 /* Minimum and maximum values a `signed long long int' can hold. */ 105 # undef LONG_LONG_MIN 106 # define LONG_LONG_MIN (-LONG_LONG_MAX - 1LL) 107 # undef LONG_LONG_MAX 108 # define LONG_LONG_MAX __LONG_LONG_MAX__ 109 110 /* Maximum value an `unsigned long long int' can hold. (Minimum is 0). */ 111 # undef ULONG_LONG_MAX 112 # define ULONG_LONG_MAX (LONG_LONG_MAX * 2ULL + 1ULL) 113 #endif 114 115 #endif /* _LIMITS_H___ */ 116 /* This administrivia gets added to the end of limits.h 117 if the system has its own version of limits.h. */ 118 119 #else /* not _GCC_LIMITS_H_ */ 120 121 #ifdef _GCC_NEXT_LIMITS_H 122 #include_next <limits.h> /* recurse down to the real one */ 123 #endif 124 125 #endif /* not _GCC_LIMITS_H_ */ 126
