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Moved LONG_LONG #define from longobject.h to here, since it's needed 

by the following.

typedef in a portable way the Python name for the C9X uintptr_t type.
This latter is the most portable way to spell an integral type to
which a void* can be cast to and back again without losing
information.  Parallel checkin hacks configure to check if the
platform/compiler supports the C9X name.
This commit is contained in:
Barry Warsaw 2000-08-18 04:48:18 +00:00
parent 512bb72fb0
commit fd847b23e6
1 changed files with 43 additions and 0 deletions
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43
Include/pyport.h
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@ -28,11 +28,54 @@ 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: LONG_LONG
**************************************************************************/
#define ANY void /* For API compatibility only. Obsolete, do not use. */
/* 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 LONG_LONG
#define LONG_LONG long long
#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.
*/
#ifdef HAVE_UINTPTR_T
typedef uintptr_t Py_uintptr_t;
#elif SIZEOF_VOID_P <= SIZEOF_INT
typedef unsigned int Py_uintptr_t;
#elif SIZEOF_VOID_P <= SIZEOF_LONG
typedef unsigned long Py_uintptr_t;
#elif defined(HAVE_LONG_LONG) && (SIZEOF_VOID_P <= SIZEOF_LONG_LONG)
typedef unsigned LONG_LONG Py_uintptr_t;
#else
# error "Python needs a typedef for Py_uintptr_t in pyport.h."
#endif /* HAVE_UINTPTR_T */
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif