#ifndef Py_PYPORT_H

#define Py_PYPORT_H

#include "pyconfig.h" /* include for defines */

#ifdef HAVE_STDINT_H

#include <stdint.h>

#endif

/**************************************************************************

Symbols and macros to supply platform-independent interfaces to basic

C language & library operations whose spellings vary across platforms.

Please try to make documentation here as clear as possible:  by definition,

the stuff here is trying to illuminate C's darkest corners.

Config #defines referenced here:

SIGNED_RIGHT_SHIFT_ZERO_FILLS

Meaning:  To be defined iff i>>j does not extend the sign bit when i is a

          signed integral type and i < 0.

Used in:  Py_ARITHMETIC_RIGHT_SHIFT

Py_DEBUG

Meaning:  Extra checks compiled in for debug mode.

Used in:  Py_SAFE_DOWNCAST

HAVE_UINTPTR_T

Meaning:  The C9X type uintptr_t is supported by the compiler

Used in:  Py_uintptr_t

HAVE_LONG_LONG

Meaning:  The compiler supports the C type "long long"

Used in:  PY_LONG_LONG

**************************************************************************/

/* For backward compatibility only. Obsolete, do not use. */

#ifdef HAVE_PROTOTYPES

#define Py_PROTO(x) x

#else

#define Py_PROTO(x) ()

#endif

#ifndef Py_FPROTO

#define Py_FPROTO(x) Py_PROTO(x)

#endif

/* typedefs for some C9X-defined synonyms for integral types.

 *

 * The names in Python are exactly the same as the C9X names, except with a

 * Py_ prefix.  Until C9X is universally implemented, this is the only way

 * to ensure that Python gets reliable names that don't conflict with names

 * in non-Python code that are playing their own tricks to define the C9X

 * names.

 *

 * NOTE: don't go nuts here!  Python has no use for *most* of the C9X

 * integral synonyms.  Only define the ones we actually need.

 */

#ifdef HAVE_LONG_LONG

#ifndef PY_LONG_LONG

#define PY_LONG_LONG long long

#if defined(LLONG_MAX)

/* If LLONG_MAX is defined in limits.h, use that. */

#define PY_LLONG_MIN LLONG_MIN

#define PY_LLONG_MAX LLONG_MAX

#define PY_ULLONG_MAX ULLONG_MAX

#elif defined(__LONG_LONG_MAX__)

/* Otherwise, if GCC has a builtin define, use that. */

#define PY_LLONG_MAX __LONG_LONG_MAX__

#define PY_LLONG_MIN (-PY_LLONG_MAX-1)

#define PY_ULLONG_MAX (__LONG_LONG_MAX__*2ULL + 1ULL)

#else

/* Otherwise, rely on two's complement. */

#define PY_ULLONG_MAX (~0ULL)

#define PY_LLONG_MAX  ((long long)(PY_ULLONG_MAX>>1))

#define PY_LLONG_MIN (-PY_LLONG_MAX-1)

#endif /* LLONG_MAX */

#endif

#endif /* HAVE_LONG_LONG */

/* uintptr_t is the C9X name for an unsigned integral type such that a

 * legitimate void* can be cast to uintptr_t and then back to void* again

 * without loss of information.  Similarly for intptr_t, wrt a signed

 * integral type.

 */

#ifdef HAVE_UINTPTR_T

typedef uintptr_t	Py_uintptr_t;

typedef intptr_t	Py_intptr_t;

#elif SIZEOF_VOID_P <= SIZEOF_INT

typedef unsigned int	Py_uintptr_t;

typedef int		Py_intptr_t;

#elif SIZEOF_VOID_P <= SIZEOF_LONG

typedef unsigned long	Py_uintptr_t;

typedef long		Py_intptr_t;

#elif defined(HAVE_LONG_LONG) && (SIZEOF_VOID_P <= SIZEOF_LONG_LONG)

typedef unsigned PY_LONG_LONG	Py_uintptr_t;

typedef PY_LONG_LONG		Py_intptr_t;

#else

#   error "Python needs a typedef for Py_uintptr_t in pyport.h."

#endif /* HAVE_UINTPTR_T */

/* Py_ssize_t is a signed integral type such that sizeof(Py_ssize_t) ==

 * sizeof(size_t).  C99 doesn't define such a thing directly (size_t is an

 * unsigned integral type).  See PEP 353 for details.

 */

#ifdef HAVE_SSIZE_T

typedef ssize_t		Py_ssize_t;

#elif SIZEOF_VOID_P == SIZEOF_SIZE_T

typedef Py_intptr_t	Py_ssize_t;

#else

#   error "Python needs a typedef for Py_ssize_t in pyport.h."

#endif

/* Largest possible value of size_t.

   SIZE_MAX is part of C99, so it might be defined on some

   platforms. If it is not defined, (size_t)-1 is a portable

   definition for C89, due to the way signed->unsigned 

   conversion is defined. */

#ifdef SIZE_MAX

#define PY_SIZE_MAX SIZE_MAX

#else

#define PY_SIZE_MAX ((size_t)-1)

#endif

/* Largest positive value of type Py_ssize_t. */

#define PY_SSIZE_T_MAX ((Py_ssize_t)(((size_t)-1)>>1))

/* Smallest negative value of type Py_ssize_t. */

#define PY_SSIZE_T_MIN (-PY_SSIZE_T_MAX-1)

/* PY_FORMAT_SIZE_T is a platform-specific modifier for use in a printf

 * format to convert an argument with the width of a size_t or Py_ssize_t.

 * C99 introduced "z" for this purpose, but not all platforms support that;

 * e.g., MS compilers use "I" instead.

 *

 * These "high level" Python format functions interpret "z" correctly on

 * all platforms (Python interprets the format string itself, and does whatever

 * the platform C requires to convert a size_t/Py_ssize_t argument):

 *

 *     PyString_FromFormat

 *     PyErr_Format

 *     PyString_FromFormatV

 *

 * Lower-level uses require that you interpolate the correct format modifier

 * yourself (e.g., calling printf, fprintf, sprintf, PyOS_snprintf); for

 * example,

 *

 *     Py_ssize_t index;

 *     fprintf(stderr, "index %" PY_FORMAT_SIZE_T "d sucks\n", index);

 *

 * That will expand to %ld, or %Id, or to something else correct for a

 * Py_ssize_t on the platform.

 */

#ifndef PY_FORMAT_SIZE_T

#   if SIZEOF_SIZE_T == SIZEOF_INT && !defined(__APPLE__)

#       define PY_FORMAT_SIZE_T ""

#   elif SIZEOF_SIZE_T == SIZEOF_LONG

#       define PY_FORMAT_SIZE_T "l"

#   elif defined(MS_WINDOWS)

#       define PY_FORMAT_SIZE_T "I"

#   else

#       error "This platform's pyconfig.h needs to define PY_FORMAT_SIZE_T"

#   endif

#endif

/* Py_LOCAL can be used instead of static to get the fastest possible calling

 * convention for functions that are local to a given module.

 *

 * Py_LOCAL_INLINE does the same thing, and also explicitly requests inlining,

 * for platforms that support that.

 *

 * If PY_LOCAL_AGGRESSIVE is defined before python.h is included, more

 * "aggressive" inlining/optimizaion is enabled for the entire module.  This

 * may lead to code bloat, and may slow things down for those reasons.  It may

 * also lead to errors, if the code relies on pointer aliasing.  Use with

 * care.

 *

 * NOTE: You can only use this for functions that are entirely local to a

 * module; functions that are exported via method tables, callbacks, etc,

 * should keep using static.

 */

#undef USE_INLINE /* XXX - set via configure? */

#if defined(_MSC_VER)

#if defined(PY_LOCAL_AGGRESSIVE)

/* enable more aggressive optimization for visual studio */

#pragma optimize("agtw", on)

#endif

/* ignore warnings if the compiler decides not to inline a function */ 

#pragma warning(disable: 4710)

/* fastest possible local call under MSVC */

#define Py_LOCAL(type) static type __fastcall

#define Py_LOCAL_INLINE(type) static __inline type __fastcall

#elif defined(USE_INLINE)

#define Py_LOCAL(type) static type

#define Py_LOCAL_INLINE(type) static inline type

#else

#define Py_LOCAL(type) static type

#define Py_LOCAL_INLINE(type) static type

#endif

/* Py_MEMCPY can be used instead of memcpy in cases where the copied blocks

 * are often very short.  While most platforms have highly optimized code for

 * large transfers, the setup costs for memcpy are often quite high.  MEMCPY

 * solves this by doing short copies "in line".

 */

#if defined(_MSC_VER)

#define Py_MEMCPY(target, source, length) do {				\

		size_t i_, n_ = (length);				\

		char *t_ = (void*) (target);				\

		const char *s_ = (void*) (source);			\

		if (n_ >= 16)						\

			memcpy(t_, s_, n_);				\

		else							\

			for (i_ = 0; i_ < n_; i_++)			\

				t_[i_] = s_[i_];			\

	} while (0)

#else

#define Py_MEMCPY memcpy

#endif

#include <stdlib.h>

#include <math.h> /* Moved here from the math section, before extern "C" */

/********************************************

 * WRAPPER FOR <time.h> and/or <sys/time.h> *

 ********************************************/

#ifdef TIME_WITH_SYS_TIME

#include <sys/time.h>

#include <time.h>

#else /* !TIME_WITH_SYS_TIME */

#ifdef HAVE_SYS_TIME_H

#include <sys/time.h>

#else /* !HAVE_SYS_TIME_H */

#include <time.h>

#endif /* !HAVE_SYS_TIME_H */

#endif /* !TIME_WITH_SYS_TIME */

/******************************

 * WRAPPER FOR <sys/select.h> *

 ******************************/

/* NB caller must include <sys/types.h> */

#ifdef HAVE_SYS_SELECT_H

#include <sys/select.h>

#endif /* !HAVE_SYS_SELECT_H */

/*******************************

 * stat() and fstat() fiddling *

 *******************************/

/* We expect that stat and fstat exist on most systems.

 *  It's confirmed on Unix, Mac and Windows.

 *  If you don't have them, add

 *      #define DONT_HAVE_STAT

 * and/or

 *      #define DONT_HAVE_FSTAT

 * to your pyconfig.h. Python code beyond this should check HAVE_STAT and

 * HAVE_FSTAT instead.

 * Also

 *      #define HAVE_SYS_STAT_H

 * if <sys/stat.h> exists on your platform, and

 *      #define HAVE_STAT_H

 * if <stat.h> does.

 */

#ifndef DONT_HAVE_STAT

#define HAVE_STAT

#endif

#ifndef DONT_HAVE_FSTAT

#define HAVE_FSTAT

#endif

#ifdef RISCOS

#include <sys/types.h>

#include "unixstuff.h"

#endif

#ifdef HAVE_SYS_STAT_H

#if defined(PYOS_OS2) && defined(PYCC_GCC)

#include <sys/types.h>

#endif

#include <sys/stat.h>

#elif defined(HAVE_STAT_H)

#include <stat.h>

#endif

#if defined(PYCC_VACPP)

/* VisualAge C/C++ Failed to Define MountType Field in sys/stat.h */

#define S_IFMT (S_IFDIR|S_IFCHR|S_IFREG)

#endif

#ifndef S_ISREG

#define S_ISREG(x) (((x) & S_IFMT) == S_IFREG)

#endif

#ifndef S_ISDIR

#define S_ISDIR(x) (((x) & S_IFMT) == S_IFDIR)

#endif

#ifdef __cplusplus

/* Move this down here since some C++ #include's don't like to be included

   inside an extern "C" */

extern "C" {

#endif

/* Py_ARITHMETIC_RIGHT_SHIFT

 * C doesn't define whether a right-shift of a signed integer sign-extends

 * or zero-fills.  Here a macro to force sign extension:

 * Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J)

 *    Return I >> J, forcing sign extension.

 * Requirements:

 *    I is of basic signed type TYPE (char, short, int, long, or long long).

 *    TYPE is one of char, short, int, long, or long long, although long long

 *    must not be used except on platforms that support it.

 *    J is an integer >= 0 and strictly less than the number of bits in TYPE

 *    (because C doesn't define what happens for J outside that range either).

 * Caution:

 *    I may be evaluated more than once.

 */

#ifdef SIGNED_RIGHT_SHIFT_ZERO_FILLS

#define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) \

	((I) < 0 ? ~((~(unsigned TYPE)(I)) >> (J)) : (I) >> (J))

#else

#define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) ((I) >> (J))

#endif

/* Py_FORCE_EXPANSION(X)

 * "Simply" returns its argument.  However, macro expansions within the

 * argument are evaluated.  This unfortunate trickery is needed to get

 * token-pasting to work as desired in some cases.

 */

#define Py_FORCE_EXPANSION(X) X

/* Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW)

 * Cast VALUE to type NARROW from type WIDE.  In Py_DEBUG mode, this

 * assert-fails if any information is lost.

 * Caution:

 *    VALUE may be evaluated more than once.

 */

#ifdef Py_DEBUG

#define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) \

	(assert((WIDE)(NARROW)(VALUE) == (VALUE)), (NARROW)(VALUE))

#else

#define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) (NARROW)(VALUE)

#endif

/* Py_IS_NAN(X)

 * Return 1 if float or double arg is a NaN, else 0.

 * Caution:

 *     X is evaluated more than once.

 *     This may not work on all platforms.  Each platform has *some*

 *     way to spell this, though -- override in pyconfig.h if you have

 *     a platform where it doesn't work.

 */

#ifndef Py_IS_NAN

#define Py_IS_NAN(X) ((X) != (X))

#endif

/* Py_IS_INFINITY(X)

 * Return 1 if float or double arg is an infinity, else 0.

 * Caution:

 *    X is evaluated more than once.

 *    This implementation may set the underflow flag if |X| is very small;

 *    it really can't be implemented correctly (& easily) before C99.

 *    Override in pyconfig.h if you have a better spelling on your platform.

 */

#ifndef Py_IS_INFINITY

#define Py_IS_INFINITY(X) ((X) && (X)*0.5 == (X))

#endif

/* Py_IS_FINITE(X)

 * Return 1 if float or double arg is neither infinite nor NAN, else 0.

 * Some compilers (e.g. VisualStudio) have intrisics for this, so a special

 * macro for this particular test is useful

 */

#ifndef Py_IS_FINITE

#define Py_IS_FINITE(X) (!Py_IS_INFINITY(X) && !Py_IS_NAN(X))

#endif

/* HUGE_VAL is supposed to expand to a positive double infinity.  Python

 * uses Py_HUGE_VAL instead because some platforms are broken in this

 * respect.  We used to embed code in pyport.h to try to worm around that,

 * but different platforms are broken in conflicting ways.  If you're on

 * a platform where HUGE_VAL is defined incorrectly, fiddle your Python

 * config to #define Py_HUGE_VAL to something that works on your platform.

 */

#ifndef Py_HUGE_VAL

#define Py_HUGE_VAL HUGE_VAL

#endif

/* Py_OVERFLOWED(X)

 * Return 1 iff a libm function overflowed.  Set errno to 0 before calling

 * a libm function, and invoke this macro after, passing the function

 * result.

 * Caution:

 *    This isn't reliable.  C99 no longer requires libm to set errno under

 *	  any exceptional condition, but does require +- HUGE_VAL return

 *	  values on overflow.  A 754 box *probably* maps HUGE_VAL to a

 *	  double infinity, and we're cool if that's so, unless the input

 *	  was an infinity and an infinity is the expected result.  A C89

 *	  system sets errno to ERANGE, so we check for that too.  We're

 *	  out of luck if a C99 754 box doesn't map HUGE_VAL to +Inf, or

 *	  if the returned result is a NaN, or if a C89 box returns HUGE_VAL

 *	  in non-overflow cases.

 *    X is evaluated more than once.

 * Some platforms have better way to spell this, so expect some #ifdef'ery.

 *

 * OpenBSD uses 'isinf()' because a compiler bug on that platform causes

 * the longer macro version to be mis-compiled. This isn't optimal, and

 * should be removed once a newer compiler is available on that platform.

 * The system that had the failure was running OpenBSD 3.2 on Intel, with

 * gcc 2.95.3.

 *

 * According to Tim's checkin, the FreeBSD systems use isinf() to work

 * around a FPE bug on that platform.

 */

#if defined(__FreeBSD__) || defined(__OpenBSD__)

#define Py_OVERFLOWED(X) isinf(X)

#else

#define Py_OVERFLOWED(X) ((X) != 0.0 && (errno == ERANGE ||    \

					 (X) == Py_HUGE_VAL || \

					 (X) == -Py_HUGE_VAL))

#endif

/* Py_SET_ERRNO_ON_MATH_ERROR(x)

 * If a libm function did not set errno, but it looks like the result

 * overflowed or not-a-number, set errno to ERANGE or EDOM.  Set errno

 * to 0 before calling a libm function, and invoke this macro after,

 * passing the function result.

 * Caution:

 *    This isn't reliable.  See Py_OVERFLOWED comments.

 *    X is evaluated more than once.

 */

#if defined(__FreeBSD__) || defined(__OpenBSD__) || (defined(__hpux) && defined(__ia64))

#define _Py_SET_EDOM_FOR_NAN(X) if (isnan(X)) errno = EDOM;

#else

#define _Py_SET_EDOM_FOR_NAN(X) ;

#endif

#define Py_SET_ERRNO_ON_MATH_ERROR(X) \

	do { \

		if (errno == 0) { \

			if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL) \

				errno = ERANGE; \

			else _Py_SET_EDOM_FOR_NAN(X) \

		} \

	} while(0)

/* Py_SET_ERANGE_ON_OVERFLOW(x)

 * An alias of Py_SET_ERRNO_ON_MATH_ERROR for backward-compatibility.

 */

#define Py_SET_ERANGE_IF_OVERFLOW(X) Py_SET_ERRNO_ON_MATH_ERROR(X)

/* Py_ADJUST_ERANGE1(x)

 * Py_ADJUST_ERANGE2(x, y)

 * Set errno to 0 before calling a libm function, and invoke one of these

 * macros after, passing the function result(s) (Py_ADJUST_ERANGE2 is useful

 * for functions returning complex results).  This makes two kinds of

 * adjustments to errno:  (A) If it looks like the platform libm set

 * errno=ERANGE due to underflow, clear errno. (B) If it looks like the

 * platform libm overflowed but didn't set errno, force errno to ERANGE.  In

 * effect, we're trying to force a useful implementation of C89 errno

 * behavior.

 * Caution:

 *    This isn't reliable.  See Py_OVERFLOWED comments.

 *    X and Y may be evaluated more than once.

 */

#define Py_ADJUST_ERANGE1(X)						\

	do {								\

		if (errno == 0) {					\

			if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL)	\

				errno = ERANGE;				\

		}							\

		else if (errno == ERANGE && (X) == 0.0)			\

			errno = 0;					\

	} while(0)

#define Py_ADJUST_ERANGE2(X, Y)						\

	do {								\

		if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL ||	\

		    (Y) == Py_HUGE_VAL || (Y) == -Py_HUGE_VAL) {	\

				if (errno == 0)				\

					errno = ERANGE;			\

		}							\

		else if (errno == ERANGE)				\

			errno = 0;					\

	} while(0)

/* Py_DEPRECATED(version)

 * Declare a variable, type, or function deprecated.

 * Usage:

 *    extern int old_var Py_DEPRECATED(2.3);

 *    typedef int T1 Py_DEPRECATED(2.4);

 *    extern int x() Py_DEPRECATED(2.5);

 */

#if defined(__GNUC__) && ((__GNUC__ >= 4) || \

			  (__GNUC__ == 3) && (__GNUC_MINOR__ >= 1))

#define Py_DEPRECATED(VERSION_UNUSED) __attribute__((__deprecated__))

#else

#define Py_DEPRECATED(VERSION_UNUSED)

#endif

/**************************************************************************

Prototypes that are missing from the standard include files on some systems

(and possibly only some versions of such systems.)

Please be conservative with adding new ones, document them and enclose them

in platform-specific #ifdefs.

**************************************************************************/

#ifdef SOLARIS

/* Unchecked */

extern int gethostname(char *, int);