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Diffstat (limited to 'include/python2.7/longobject.h')
| -rw-r--r-- | include/python2.7/longobject.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/include/python2.7/longobject.h b/include/python2.7/longobject.h new file mode 100644 index 0000000..8be2345 --- /dev/null +++ b/include/python2.7/longobject.h @@ -0,0 +1,135 @@ +#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(long) PyLong_AsLongAndOverflow(PyObject *, int *); +PyAPI_FUNC(unsigned long) PyLong_AsUnsignedLong(PyObject *); +PyAPI_FUNC(unsigned long) PyLong_AsUnsignedLongMask(PyObject *); +PyAPI_FUNC(Py_ssize_t) PyLong_AsSsize_t(PyObject *); +PyAPI_FUNC(int) _PyLong_AsInt(PyObject *); +PyAPI_FUNC(PyObject *) PyLong_GetInfo(void); + +/* 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_Frexp returns a double x and an exponent e such that the + true value is approximately equal to x * 2**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); otherwise, 0.5 <= abs(x) < 1.0. On overflow, which is + possible if the number of bits doesn't fit into a Py_ssize_t, sets + OverflowError and returns -1.0 for x, 0 for e. */ +PyAPI_FUNC(double) _PyLong_Frexp(PyLongObject *a, Py_ssize_t *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 *); +PyAPI_FUNC(PY_LONG_LONG) PyLong_AsLongLongAndOverflow(PyObject *, int *); +#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 */ |