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31 * @(#)limits.h 8.3 (Berkeley) 1/4/94
35 #ifndef _MACHINE__LIMITS_H_
36 #define _MACHINE__LIMITS_H_
39 * According to ANSI (section 2.2.4.2), the values below must be usable by
40 * #if preprocessing directives. Additionally, the expression must have the
41 * same type as would an expression that is an object of the corresponding
42 * type converted according to the integral promotions. The subtraction for
43 * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an
44 * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2).
47 #define __CHAR_BIT 8 /* number of bits in a char */
49 #define __SCHAR_MAX 0x7f /* max value for a signed char */
50 #define __SCHAR_MIN (-0x7f - 1) /* min value for a signed char */
52 #define __UCHAR_MAX 0xff /* max value for an unsigned char */
54 #define __USHRT_MAX 0xffff /* max value for an unsigned short */
55 #define __SHRT_MAX 0x7fff /* max value for a short */
56 #define __SHRT_MIN (-0x7fff - 1) /* min value for a short */
58 #define __UINT_MAX 0xffffffff /* max value for an unsigned int */
59 #define __INT_MAX 0x7fffffff /* max value for an int */
60 #define __INT_MIN (-0x7fffffff - 1) /* min value for an int */
62 #define __ULONG_MAX 0xffffffffUL /* max value for an unsigned long */
63 #define __LONG_MAX 0x7fffffffL /* max value for a long */
64 #define __LONG_MIN (-0x7fffffffL - 1) /* min value for a long */
66 /* max value for an unsigned long long */
67 #define __ULLONG_MAX 0xffffffffffffffffULL
68 #define __LLONG_MAX 0x7fffffffffffffffLL /* max value for a long long */
69 #define __LLONG_MIN (-0x7fffffffffffffffLL - 1) /* min for a long long */
71 #define __SSIZE_MAX __INT_MAX /* max value for a ssize_t */
73 #define __SIZE_T_MAX __UINT_MAX /* max value for a size_t */
75 #define __OFF_MAX __LLONG_MAX /* max value for a off_t */
76 #define __OFF_MIN __LLONG_MIN /* min value for a off_t */
78 /* Quads and long longs are the same size. Ensure they stay in sync. */
79 #define __UQUAD_MAX __ULLONG_MAX /* max value for a uquad_t */
80 #define __QUAD_MAX __LLONG_MAX /* max value for a quad_t */
81 #define __QUAD_MIN __LLONG_MIN /* min value for a quad_t */
86 /* Minimum signal stack size. */
87 #define __MINSIGSTKSZ (1024 * 4)
89 #endif /* !_MACHINE__LIMITS_H_ */