| #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); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| #endif /* !Py_LONGOBJECT_H */ |