#ifndef Py_LONGINTREPR_H#define Py_LONGINTREPR_H#ifdef __cplusplusextern "C" {#endif  /* This is published for the benefit of "friend" marshal.c only. */ /* Parameters of the long integer representation.   These shouldn't have to be changed as C should guarantee that a short   contains at least 16 bits, but it's made changeable anyway.   Note: 'digit' should be able to hold 2*MASK+1, and 'twodigits'   should be able to hold the intermediate results in 'mul'   (at most (BASE-1)*(2*BASE+1) == MASK*(2*MASK+3)).   Also, x_sub assumes that 'digit' is an unsigned type, and overflow   is handled by taking the result mod 2**N for some N > SHIFT.   And, at some places it is assumed that MASK fits in an int, as well.   long_pow() requires that SHIFT be divisible by 5. */ typedef unsigned short digit;typedef unsigned int wdigit; /* digit widened to parameter size */#define BASE_TWODIGITS_TYPE longtypedef unsigned BASE_TWODIGITS_TYPE twodigits;typedef BASE_TWODIGITS_TYPE stwodigits; /* signed variant of twodigits */ #define SHIFT	15#define BASE	((digit)1 << SHIFT)#define MASK	((int)(BASE - 1)) #if SHIFT % 5 != 0#error "longobject.c requires that SHIFT be divisible by 5"#endif /* Long integer representation.   The absolute value of a number is equal to   	SUM(for i=0 through abs(ob_size)-1) ob_digit[i] * 2**(SHIFT*i)   Negative numbers are represented with ob_size < 0;   zero is represented by ob_size == 0.   In a normalized number, ob_digit[abs(ob_size)-1] (the most significant   digit) is never zero.  Also, in all cases, for all valid i,   	0 <= ob_digit[i] <= MASK.   The allocation function takes care of allocating extra memory   so that ob_digit[0] ... ob_digit[abs(ob_size)-1] are actually available.    CAUTION:  Generic code manipulating subtypes of PyVarObject has to   aware that longs abuse  ob_size's sign bit.*/ struct _longobject {	PyObject_VAR_HEAD	digit ob_digit[1];}; PyAPI_FUNC(PyLongObject *) _PyLong_New(Py_ssize_t); /* Return a copy of src. */PyAPI_FUNC(PyObject *) _PyLong_Copy(PyLongObject *src); #ifdef __cplusplus}#endif#endif /* !Py_LONGINTREPR_H */