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#ifndef
Py_LONGOBJECT_H
#define
Py_LONGOBJECT_H
#ifdef
__cplusplus
extern
"C"
{
#endif
/* Long (arbitrary precision) integer object interface */
typedef
struct
_longobject
PyLongObject
;
/* Revealed in longintrepr.h */
PyAPI_DATA
(
PyTypeObject
)
PyLong_Type
;
#define
PyLong_Check
(
op
) \
PyType_FastSubclass(Py_TYPE(op), Py_TPFLAGS_LONG_SUBCLASS)
#define
PyLong_CheckExact
(
op
) (Py_TYPE(op) == &PyLong_Type)
PyAPI_FUNC
(
PyObject
*
)
PyLong_FromLong
(
long
);
PyAPI_FUNC
(
PyObject
*
)
PyLong_FromUnsignedLong
(
unsigned long
);
PyAPI_FUNC
(
PyObject
*
)
PyLong_FromDouble
(
double
);
PyAPI_FUNC
(
PyObject
*
)
PyLong_FromSize_t
(
size_t
);
PyAPI_FUNC
(
PyObject
*
)
PyLong_FromSsize_t
(
Py_ssize_t
);
PyAPI_FUNC
(
long
)
PyLong_AsLong
(
PyObject
*
);
PyAPI_FUNC
(
unsigned long
)
PyLong_AsUnsignedLong
(
PyObject
*
);
PyAPI_FUNC
(
unsigned long
)
PyLong_AsUnsignedLongMask
(
PyObject
*
);
PyAPI_FUNC
(
Py_ssize_t
)
PyLong_AsSsize_t
(
PyObject
*
);
/* For use by intobject.c only */
#define
_PyLong_AsSsize_t
PyLong_AsSsize_t
#define
_PyLong_FromSize_t
PyLong_FromSize_t
#define
_PyLong_FromSsize_t
PyLong_FromSsize_t
PyAPI_DATA
(
int
)
_PyLong_DigitValue
[
256
];
/* _PyLong_AsScaledDouble returns a double x and an exponent e such that
the true value is approximately equal to x * 2**(SHIFT*e). e is >= 0.
x is 0.0 if and only if the input is 0 (in which case, e and x are both
zeroes). Overflow is impossible. Note that the exponent returned must
be multiplied by SHIFT! There may not be enough room in an int to store
e*SHIFT directly. */
PyAPI_FUNC
(
double
)
_PyLong_AsScaledDouble
(
PyObject
*
vv
,
int
*
e
);
PyAPI_FUNC
(
double
)
PyLong_AsDouble
(
PyObject
*
);
PyAPI_FUNC
(
PyObject
*
)
PyLong_FromVoidPtr
(
void
*
);
PyAPI_FUNC
(
void
*
)
PyLong_AsVoidPtr
(
PyObject
*
);
#ifdef
HAVE_LONG_LONG
PyAPI_FUNC
(
PyObject
*
)
PyLong_FromLongLong
(
PY_LONG_LONG
);
PyAPI_FUNC
(
PyObject
*
)
PyLong_FromUnsignedLongLong
(
unsigned
PY_LONG_LONG
);
PyAPI_FUNC
(
PY_LONG_LONG
)
PyLong_AsLongLong
(
PyObject
*
);
PyAPI_FUNC
(
unsigned
PY_LONG_LONG
)
PyLong_AsUnsignedLongLong
(
PyObject
*
);
PyAPI_FUNC
(
unsigned
PY_LONG_LONG
)
PyLong_AsUnsignedLongLongMask
(
PyObject
*
);
#endif
/* HAVE_LONG_LONG */
PyAPI_FUNC
(
PyObject
*
)
PyLong_FromString
(
char
*
,
char
*
*
,
int
);
#ifdef
Py_USING_UNICODE
PyAPI_FUNC
(
PyObject
*
)
PyLong_FromUnicode
(
Py_UNICODE
*
,
Py_ssize_t
,
int
);
#endif
/* _PyLong_Sign. Return 0 if v is 0, -1 if v < 0, +1 if v > 0.
v must not be NULL, and must be a normalized long.
There are no error cases.
*/
PyAPI_FUNC
(
int
)
_PyLong_Sign
(
PyObject
*
v
);
/* _PyLong_NumBits. Return the number of bits needed to represent the
absolute value of a long. For example, this returns 1 for 1 and -1, 2
for 2 and -2, and 2 for 3 and -3. It returns 0 for 0.
v must not be NULL, and must be a normalized long.
(size_t)-1 is returned and OverflowError set if the true result doesn't
fit in a size_t.
*/
PyAPI_FUNC
(
size_t
)
_PyLong_NumBits
(
PyObject
*
v
);
/* _PyLong_FromByteArray: View the n unsigned bytes as a binary integer in
base 256, and return a Python long with the same numeric value.
If n is 0, the integer is 0. Else:
If little_endian is 1/true, bytes[n-1] is the MSB and bytes[0] the LSB;
else (little_endian is 0/false) bytes[0] is the MSB and bytes[n-1] the
LSB.
If is_signed is 0/false, view the bytes as a non-negative integer.
If is_signed is 1/true, view the bytes as a 2's-complement integer,
non-negative if bit 0x80 of the MSB is clear, negative if set.
Error returns:
+ Return NULL with the appropriate exception set if there's not
enough memory to create the Python long.
*/
PyAPI_FUNC
(
PyObject
*
)
_PyLong_FromByteArray
(
const
unsigned
char
*
bytes
,
size_t
n
,
int
little_endian
,
int
is_signed
);
/* _PyLong_AsByteArray: Convert the least-significant 8*n bits of long
v to a base-256 integer, stored in array bytes. Normally return 0,
return -1 on error.
If little_endian is 1/true, store the MSB at bytes[n-1] and the LSB at
bytes[0]; else (little_endian is 0/false) store the MSB at bytes[0] and
the LSB at bytes[n-1].
If is_signed is 0/false, it's an error if v < 0; else (v >= 0) n bytes
are filled and there's nothing special about bit 0x80 of the MSB.
If is_signed is 1/true, bytes is filled with the 2's-complement
representation of v's value. Bit 0x80 of the MSB is the sign bit.
Error returns (-1):
+ is_signed is 0 and v < 0. TypeError is set in this case, and bytes
isn't altered.
+ n isn't big enough to hold the full mathematical value of v. For
example, if is_signed is 0 and there are more digits in the v than
fit in n; or if is_signed is 1, v < 0, and n is just 1 bit shy of
being large enough to hold a sign bit. OverflowError is set in this
case, but bytes holds the least-signficant n bytes of the true value.
*/
PyAPI_FUNC
(
int
)
_PyLong_AsByteArray
(
PyLongObject
*
v
,
unsigned
char
*
bytes
,
size_t
n
,
int
little_endian
,
int
is_signed
);
/* _PyLong_Format: Convert the long to a string object with given base,
appending a base prefix of 0[box] if base is 2, 8 or 16.
Add a trailing "L" if addL is non-zero.
If newstyle is zero, then use the pre-2.6 behavior of octal having
a leading "0", instead of the prefix "0o" */
PyAPI_FUNC
(
PyObject
*
)
_PyLong_Format
(
PyObject
*
aa
,
int
base
,
int
addL
,
int
newstyle
);
/* Format the object based on the format_spec, as defined in PEP 3101
(Advanced String Formatting). */
PyAPI_FUNC
(
PyObject
*
)
_PyLong_FormatAdvanced
(
PyObject
*
obj
,
char
*
format_spec
,
Py_ssize_t
format_spec_len
);
#ifdef
__cplusplus
}
#endif
#endif
/* !Py_LONGOBJECT_H */
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