6.2 Number Protocol

int PyNumber_Check(PyObject *o)

Returns 1 if the object o provides numeric protocols, and false otherwise. This function always succeeds.

PyObject* PyNumber_Add(PyObject *o1, PyObject *o2)

Returns the result of adding o1 and o2, or NULL on failure. This is the equivalent of the Python expression "o1 + o2".

PyObject* PyNumber_Subtract(PyObject *o1, PyObject *o2)

Returns the result of subtracting o2 from o1, or NULL on failure. This is the equivalent of the Python expression "o1 - o2".

PyObject* PyNumber_Multiply(PyObject *o1, PyObject *o2)

Returns the result of multiplying o1 and o2, or NULL on failure. This is the equivalent of the Python expression "o1 * o2".

PyObject* PyNumber_Divide(PyObject *o1, PyObject *o2)

Returns the result of dividing o1 by o2, or NULL on failure. This is the equivalent of the Python expression "o1 / o2".

PyObject* PyNumber_Remainder(PyObject *o1, PyObject *o2)

Returns the remainder of dividing o1 by o2, or NULL on failure. This is the equivalent of the Python expression "o1 % o2".

PyObject* PyNumber_Divmod(PyObject *o1, PyObject *o2)

See the built-in function divmod(). Returns NULL on failure. This is the equivalent of the Python expression "divmod(o1, o2)".

PyObject* PyNumber_Power(PyObject *o1, PyObject *o2, PyObject *o3)

See the built-in function pow(). Returns NULL on failure. This is the equivalent of the Python expression "pow(o1, o2, o3)", where o3 is optional. If o3 is to be ignored, pass Py_None in its place.

PyObject* PyNumber_Negative(PyObject *o)

Returns the negation of o on success, or NULL on failure. This is the equivalent of the Python expression "-o".

PyObject* PyNumber_Positive(PyObject *o)

Returns o on success, or NULL on failure. This is the equivalent of the Python expression "+o".

PyObject* PyNumber_Absolute(PyObject *o)

Returns the absolute value of o, or NULL on failure. This is the equivalent of the Python expression "abs(o)".

PyObject* PyNumber_Invert(PyObject *o)

Returns the bitwise negation of o on success, or NULL on failure. This is the equivalent of the Python expression "~o".

PyObject* PyNumber_Lshift(PyObject *o1, PyObject *o2)

Returns the result of left shifting o1 by o2 on success, or NULL on failure. This is the equivalent of the Python expression "o1 << o2".

PyObject* PyNumber_Rshift(PyObject *o1, PyObject *o2)

Returns the result of right shifting o1 by o2 on success, or NULL on failure. This is the equivalent of the Python expression "o1 >> o2".

PyObject* PyNumber_And(PyObject *o1, PyObject *o2)

Returns the result of ``anding'' o2 and o2 on success and NULL on failure. This is the equivalent of the Python expression "o1 and o2".

PyObject* PyNumber_Xor(PyObject *o1, PyObject *o2)

Returns the bitwise exclusive or of o1 by o2 on success, or NULL on failure. This is the equivalent of the Python expression "o1 ^ o2".

PyObject* PyNumber_Or(PyObject *o1, PyObject *o2)

Returns the result of o1 and o2 on success, or NULL on failure. This is the equivalent of the Python expression "o1 or o2".

PyObject* PyNumber_Coerce(PyObject **p1, PyObject **p2)

This function takes the addresses of two variables of type PyObject*.

If the objects pointed to by *p1 and *p2 have the same type, increment their reference count and return 0 (success). If the objects can be converted to a common numeric type, replace *p1 and *p2 by their converted value (with 'new' reference counts), and return 0. If no conversion is possible, or if some other error occurs, return -1 (failure) and don't increment the reference counts. The call PyNumber_Coerce(&o1, &o2) is equivalent to the Python statement "o1, o2 = coerce(o1, o2)".

PyObject* PyNumber_Int(PyObject *o)

Returns the o converted to an integer object on success, or NULL on failure. This is the equivalent of the Python expression "int(o)".

PyObject* PyNumber_Long(PyObject *o)

Returns the o converted to a long integer object on success, or NULL on failure. This is the equivalent of the Python expression "long(o)".

PyObject* PyNumber_Float(PyObject *o)

Returns the o converted to a float object on success, or NULL on failure. This is the equivalent of the Python expression "float(o)".