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da53afa1b0
both mystrtoul.c and longobject.c. Share the table instead. Also cut its size by 64 entries (they had been used for an inscrutable trick originally, but the code no longer tries to use that trick).
114 lines
4.7 KiB
C
114 lines
4.7 KiB
C
#ifndef Py_LONGOBJECT_H
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#define Py_LONGOBJECT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Long (arbitrary precision) integer object interface */
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typedef struct _longobject PyLongObject; /* Revealed in longintrepr.h */
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PyAPI_DATA(PyTypeObject) PyLong_Type;
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#define PyLong_Check(op) PyObject_TypeCheck(op, &PyLong_Type)
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#define PyLong_CheckExact(op) ((op)->ob_type == &PyLong_Type)
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PyAPI_FUNC(PyObject *) PyLong_FromLong(long);
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PyAPI_FUNC(PyObject *) PyLong_FromUnsignedLong(unsigned long);
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PyAPI_FUNC(PyObject *) PyLong_FromDouble(double);
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PyAPI_FUNC(long) PyLong_AsLong(PyObject *);
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PyAPI_FUNC(unsigned long) PyLong_AsUnsignedLong(PyObject *);
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PyAPI_FUNC(unsigned long) PyLong_AsUnsignedLongMask(PyObject *);
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/* For use by intobject.c only */
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PyAPI_FUNC(Py_ssize_t) _PyLong_AsSsize_t(PyObject *);
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PyAPI_FUNC(PyObject *) _PyLong_FromSize_t(size_t);
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PyAPI_FUNC(PyObject *) _PyLong_FromSsize_t(Py_ssize_t);
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PyAPI_DATA(int) _PyLong_DigitValue[256];
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/* _PyLong_AsScaledDouble returns a double x and an exponent e such that
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the true value is approximately equal to x * 2**(SHIFT*e). e is >= 0.
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x is 0.0 if and only if the input is 0 (in which case, e and x are both
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zeroes). Overflow is impossible. Note that the exponent returned must
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be multiplied by SHIFT! There may not be enough room in an int to store
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e*SHIFT directly. */
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PyAPI_FUNC(double) _PyLong_AsScaledDouble(PyObject *vv, int *e);
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PyAPI_FUNC(double) PyLong_AsDouble(PyObject *);
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PyAPI_FUNC(PyObject *) PyLong_FromVoidPtr(void *);
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PyAPI_FUNC(void *) PyLong_AsVoidPtr(PyObject *);
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#ifdef HAVE_LONG_LONG
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PyAPI_FUNC(PyObject *) PyLong_FromLongLong(PY_LONG_LONG);
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PyAPI_FUNC(PyObject *) PyLong_FromUnsignedLongLong(unsigned PY_LONG_LONG);
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PyAPI_FUNC(PY_LONG_LONG) PyLong_AsLongLong(PyObject *);
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PyAPI_FUNC(unsigned PY_LONG_LONG) PyLong_AsUnsignedLongLong(PyObject *);
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PyAPI_FUNC(unsigned PY_LONG_LONG) PyLong_AsUnsignedLongLongMask(PyObject *);
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#endif /* HAVE_LONG_LONG */
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PyAPI_FUNC(PyObject *) PyLong_FromString(char *, char **, int);
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#ifdef Py_USING_UNICODE
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PyAPI_FUNC(PyObject *) PyLong_FromUnicode(Py_UNICODE*, Py_ssize_t, int);
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#endif
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/* _PyLong_Sign. Return 0 if v is 0, -1 if v < 0, +1 if v > 0.
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v must not be NULL, and must be a normalized long.
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There are no error cases.
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*/
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PyAPI_FUNC(int) _PyLong_Sign(PyObject *v);
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/* _PyLong_NumBits. Return the number of bits needed to represent the
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absolute value of a long. For example, this returns 1 for 1 and -1, 2
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for 2 and -2, and 2 for 3 and -3. It returns 0 for 0.
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v must not be NULL, and must be a normalized long.
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(size_t)-1 is returned and OverflowError set if the true result doesn't
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fit in a size_t.
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*/
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PyAPI_FUNC(size_t) _PyLong_NumBits(PyObject *v);
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/* _PyLong_FromByteArray: View the n unsigned bytes as a binary integer in
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base 256, and return a Python long with the same numeric value.
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If n is 0, the integer is 0. Else:
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If little_endian is 1/true, bytes[n-1] is the MSB and bytes[0] the LSB;
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else (little_endian is 0/false) bytes[0] is the MSB and bytes[n-1] the
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LSB.
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If is_signed is 0/false, view the bytes as a non-negative integer.
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If is_signed is 1/true, view the bytes as a 2's-complement integer,
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non-negative if bit 0x80 of the MSB is clear, negative if set.
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Error returns:
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+ Return NULL with the appropriate exception set if there's not
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enough memory to create the Python long.
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*/
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PyAPI_FUNC(PyObject *) _PyLong_FromByteArray(
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const unsigned char* bytes, size_t n,
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int little_endian, int is_signed);
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/* _PyLong_AsByteArray: Convert the least-significant 8*n bits of long
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v to a base-256 integer, stored in array bytes. Normally return 0,
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return -1 on error.
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If little_endian is 1/true, store the MSB at bytes[n-1] and the LSB at
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bytes[0]; else (little_endian is 0/false) store the MSB at bytes[0] and
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the LSB at bytes[n-1].
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If is_signed is 0/false, it's an error if v < 0; else (v >= 0) n bytes
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are filled and there's nothing special about bit 0x80 of the MSB.
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If is_signed is 1/true, bytes is filled with the 2's-complement
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representation of v's value. Bit 0x80 of the MSB is the sign bit.
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Error returns (-1):
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+ is_signed is 0 and v < 0. TypeError is set in this case, and bytes
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isn't altered.
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+ n isn't big enough to hold the full mathematical value of v. For
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example, if is_signed is 0 and there are more digits in the v than
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fit in n; or if is_signed is 1, v < 0, and n is just 1 bit shy of
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being large enough to hold a sign bit. OverflowError is set in this
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case, but bytes holds the least-signficant n bytes of the true value.
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*/
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PyAPI_FUNC(int) _PyLong_AsByteArray(PyLongObject* v,
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unsigned char* bytes, size_t n,
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int little_endian, int is_signed);
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_LONGOBJECT_H */
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