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29 * @(#)limits.h 8.3 (Berkeley) 1/4/94
33 #ifndef _MACHINE__LIMITS_H_
34 #define _MACHINE__LIMITS_H_
37 * According to ANSI (section 2.2.4.2), the values below must be usable by
38 * #if preprocessing directives. Additionally, the expression must have the
39 * same type as would an expression that is an object of the corresponding
40 * type converted according to the integral promotions. The subtraction for
41 * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an
42 * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2).
45 #define __CHAR_BIT 8 /* number of bits in a char */
47 #define __SCHAR_MAX 0x7f /* max value for a signed char */
48 #define __SCHAR_MIN (-0x7f - 1) /* min value for a signed char */
50 #define __UCHAR_MAX 0xff /* max value for an unsigned char */
52 #define __USHRT_MAX 0xffff /* max value for an unsigned short */
53 #define __SHRT_MAX 0x7fff /* max value for a short */
54 #define __SHRT_MIN (-0x7fff - 1) /* min value for a short */
56 #define __UINT_MAX 0xffffffff /* max value for an unsigned int */
57 #define __INT_MAX 0x7fffffff /* max value for an int */
58 #define __INT_MIN (-0x7fffffff - 1) /* min value for an int */
61 #define __ULONG_MAX 0xffffffffffffffff
62 #define __LONG_MAX 0x7fffffffffffffff
63 #define __LONG_MIN (-0x7fffffffffffffff - 1)
66 #define __ULONG_MAX 0xffffffffUL /* max value for an unsigned long */
67 #define __LONG_MAX 0x7fffffffL /* max value for a long */
68 #define __LONG_MIN (-0x7fffffffL - 1) /* min value for a long */
72 #define __ULLONG_MAX 0xffffffffffffffffULL
73 #define __LLONG_MAX 0x7fffffffffffffffLL /* max value for a long long */
74 #define __LLONG_MIN (-0x7fffffffffffffffLL - 1) /* min for a long long */
77 #define __SSIZE_MAX __LONG_MAX /* max value for a ssize_t */
78 #define __SIZE_T_MAX __ULONG_MAX /* max value for a size_t */
80 #define __SSIZE_MAX __INT_MAX /* max value for a ssize_t */
81 #define __SIZE_T_MAX __UINT_MAX /* max value for a size_t */
84 #define __OFF_MAX __LLONG_MAX /* max value for an off_t */
85 #define __OFF_MIN __LLONG_MIN /* min value for an off_t */
87 /* Quads and long longs are the same size. Ensure they stay in sync. */
88 #define __UQUAD_MAX __ULLONG_MAX /* max value for a uquad_t */
89 #define __QUAD_MAX __LLONG_MAX /* max value for a quad_t */
90 #define __QUAD_MIN __LLONG_MIN /* min value for a quad_t */
94 /* Minimum signal stack size. */
95 #define __MINSIGSTKSZ (512 * 4)
97 #endif /* !_MACHINE__LIMITS_H_ */