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Diffstat (limited to 'more-hdrs/stdint.h')
| -rw-r--r-- | more-hdrs/stdint.h | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/more-hdrs/stdint.h b/more-hdrs/stdint.h new file mode 100644 index 00000000000..ce729ca94a5 --- /dev/null +++ b/more-hdrs/stdint.h @@ -0,0 +1,203 @@ +/* + * Copyright (c) 2000,2001 Apple Computer, Inc. All rights reserved. + * + * We build on <machine/types.h> rather than <sys/types.h> in order to + * minimize the global namespace pollution (i.e., we'd like to define + * *only* those identifiers that the C standard mandates should be + * defined by <stdint.h>). Using <machine/types.h> means that (at + * least as of January 2001) all of the extra macros that do get + * #defined by #include'ing <stdint.h> are in the implementor's + * namespace ("_[A-Z].*" or "__.*"). + * + * The reason that we do #include the relevant ...types.h instead of + * creating several "competing" typedefs is to make header collisions + * less likely during the transition to C99. + * + * Caveat: There are still five extra typedef's defined by doing it + * this way: "u_int{8,16,32,64}_t" and "register_t". Might be + * fixable via pre- and post- #defines, but probably not worth it. + */ + +#ifndef _STDINT_H_ +#define _STDINT_H_ + +#include <machine/types.h> + + +/* from ISO/IEC 988:1999 spec */ + +/* 7.18.1.1 Exact-width integer types */ + /* int8_t is defined in <machine/types.h> */ + /* int16_t is defined in <machine/types.h> */ + /* int32_t is defined in <machine/types.h> */ + /* int64_t is defined in <machine/types.h> */ +typedef u_int8_t uint8_t; /* u_int8_t is defined in <machine/types.h> */ +typedef u_int16_t uint16_t; /* u_int16_t is defined in <machine/types.h> */ +typedef u_int32_t uint32_t; /* u_int32_t is defined in <machine/types.h> */ +typedef u_int64_t uint64_t; /* u_int64_t is defined in <machine/types.h> */ + + +/* 7.18.1.2 Minumun-width integer types */ +typedef int8_t int_least8_t; +typedef int16_t int_least16_t; +typedef int32_t int_least32_t; +typedef int64_t int_least64_t; +typedef uint8_t uint_least8_t; +typedef uint16_t uint_least16_t; +typedef uint32_t uint_least32_t; +typedef uint64_t uint_least64_t; + + +/* 7.18.1.3 Fastest-width integer types */ +typedef int8_t int_fast8_t; +typedef int16_t int_fast16_t; +typedef int32_t int_fast32_t; +typedef int64_t int_fast64_t; +typedef uint8_t uint_fast8_t; +typedef uint16_t uint_fast16_t; +typedef uint32_t uint_fast32_t; +typedef uint64_t uint_fast64_t; + + +/* 7.18.1.4 Integer types capable of hgolding object pointers */ + /* intptr_t is defined in <machine/types.h> */ + /* uintptr_t is defined in <machine/types.h> */ + + +/* 7.18.1.5 Greatest-width integer types */ +typedef long long intmax_t; +typedef unsigned long long uintmax_t; + + +/* "C++ implementations should define these macros only when + * __STDC_LIMIT_MACROS is defined before <stdint.h> is included." + * In other words, if C++, then __STDC_LIMIT_MACROS enables the + * macros below. (Note that there also exists a different enabling + * macro (__STDC_CONSTANT_MACROS) for the last few, below.) + */ +#if (! defined(__cplusplus)) || defined(__STDC_LIMIT_MACROS) + + +/* 7.18.2 Limits of specified-width integer types: + * These #defines specify the minimum and maximum limits + * of each of the types declared above. + */ + + +/* 7.18.2.1 Limits of exact-width integer types */ +#define INT8_MAX 127 +#define INT16_MAX 32767 +#define INT32_MAX 2147483647 +#define INT64_MAX 9223372036854775807LL + +#define INT8_MIN -128 +#define INT16_MIN -32768 + /* + Note: the literal "most negative int" cannot be written in C -- + the rules in the standard (section 6.4.4.1 in C99) will give it + an unsigned type, so INT32_MIN (and the most negative member of + any larger signed type) must be written via a constant expression. + */ +#define INT32_MIN (-INT32_MAX-1) +#define INT64_MIN (-INT64_MAX-1) + +#define UINT8_MAX 255 +#define UINT16_MAX 65535 +#define UINT32_MAX 4294967295U +#define UINT64_MAX 18446744073709551615ULL + +/* 7.18.2.2 Limits of minimum-width integer types */ +#define INT_LEAST8_MIN INT8_MIN +#define INT_LEAST16_MIN INT16_MIN +#define INT_LEAST32_MIN INT32_MIN +#define INT_LEAST64_MIN INT64_MIN + +#define INT_LEAST8_MAX INT8_MAX +#define INT_LEAST16_MAX INT16_MAX +#define INT_LEAST32_MAX INT32_MAX +#define INT_LEAST64_MAX INT64_MAX + +#define UINT_LEAST8_MAX UINT8_MAX +#define UINT_LEAST16_MAX UINT16_MAX +#define UINT_LEAST32_MAX UINT32_MAX +#define UINT_LEAST64_MAX UINT64_MAX + +/* 7.18.2.3 Limits of fastest minimum-width integer types */ +#define INT_FAST8_MIN INT8_MIN +#define INT_FAST16_MIN INT16_MIN +#define INT_FAST32_MIN INT32_MIN +#define INT_FAST64_MIN INT64_MIN + +#define INT_FAST8_MAX INT8_MAX +#define INT_FAST16_MAX INT16_MAX +#define INT_FAST32_MAX INT32_MAX +#define INT_FAST64_MAX INT64_MAX + +#define UINT_FAST8_MAX UINT8_MAX +#define UINT_FAST16_MAX UINT16_MAX +#define UINT_FAST32_MAX UINT32_MAX +#define UINT_FAST64_MAX UINT64_MAX + +/* 7.18.2.4 Limits of integer types capable of holding object pointers */ + +#define INTPTR_MIN INT32_MIN +#define INTPTR_MAX INT32_MAX + +#define UINTPTR_MAX UINT32_MAX + +/* 7.18.2.5 Limits of greatest-width integer types */ +#define INTMAX_MIN INT64_MIN +#define INTMAX_MAX INT64_MAX + +#define UINTMAX_MAX UINT64_MAX + +/* 7.18.3 "Other" */ +#define PTRDIFF_MIN INT32_MIN +#define PTRDIFF_MAX INT32_MAX + +/* We have no sig_atomic_t yet, so no SIG_ATOMIC_{MIN,MAX}. + Should end up being {-127,127} or {0,255} ... or bigger. + My bet would be on one of {U}INT32_{MIN,MAX}. */ + +#define SIZE_MAX UINT32_MAX + +#ifndef WCHAR_MIN +# define WCHAR_MIN 0 +#endif + +#ifndef WCHAR_MAX +# ifdef __WCHAR_MAX__ +# define WCHAR_MAX __WCHAR_MAX__ +# else +# define WCHAR_MAX 0x7fffffff +# endif +#endif + +/* We have no wint_t yet, so no WINT_{MIN,MAX}. + Should end up being {U}INT32_{MIN,MAX}, depending. */ + + +#endif /* if C++, then __STDC_LIMIT_MACROS enables the above macros */ + +/* "C++ implementations should define these macros only when + * __STDC_CONSTANT_MACROS is defined before <stdint.h> is included." + */ +#if (! defined(__cplusplus)) || defined(__STDC_CONSTANT_MACROS) + +/* 7.18.4 Macros for integer constants */ +#define INT8_C(v) ((int8_t)v) +#define INT16_C(v) ((int16_t)v) +#define INT32_C(v) (v ## L) +#define INT64_C(v) (v ## LL) + +#define UINT8_C(v) ((uint8_t)v) +#define UINT16_C(v) ((uint16_t)v) +#define UINT32_C(v) (v ## UL) +#define UINT64_C(v) (v ## ULL) + +#define INTMAX_C(v) (v ## LL) +#define UINTMAX_C(v) (v ## ULL) + +#endif /* if C++, then __STDC_CONSTANT_MACROS enables the above macros */ + +#endif /* _STDINT_H_ */ |