Message 188118 - Python tracker (original) (raw)

The problem is to support platforms not providing a intmax_t type.

I don't know if the following C code would be a good "approximation" of the maximum integral value (signed/unsigned).

#ifdef HAVE_INTMAX_T typedef intmax_t Py_intmax_t; typedef uintmax_t Py_uintmax_t;

#elif defined(HAVE_LONG_LONG) && (SIZEOF_VOID_P <= SIZEOF_LONG_LONG) typedef PY_LONG_LONG Py_intmax_t; typedef unsigned PY_LONG_LONG Py_uintmax_t;

#elif SIZEOF_VOID_P <= SIZEOF_LONG typedef long Py_intmax_t; typedef unsigned long Py_uintmax_t;

#elif SIZEOF_VOID_P <= SIZEOF_INT typedef int Py_intmax_t; typedef unsigned int Py_uintmax_t;

#else

error "Python needs a typedef for Py_intmax_t in pyport.h."

#endif /* HAVE_INTMAX_T */

If it is not, conversion from/to other types like off_t, time_t, pid_t or uid_t would loose information.

It is the same question than yours: is there a platform with an integer type wider than a pointer (intptr_t/void*)?