Python’s complex number objects are implemented as two distinct types when viewed from the C API: one is the Python object exposed to Python programs, and the other is a C structure which represents the actual complex number value. The API provides functions for working with both.
Note that the functions which accept these structures as parameters and return them as results do so by value rather than dereferencing them through pointers. This is consistent throughout the API.
The C structure which corresponds to the value portion of a Python complex number object. Most of the functions for dealing with complex number objects use structures of this type as input or output values, as appropriate. It is defined as:
typedef struct {
double real;
double imag;
} Py_complex;
Return the sum of two complex numbers, using the C Py_complex representation.
Return the difference between two complex numbers, using the C Py_complex representation.
Return the negation of the complex number complex, using the C Py_complex representation.
Return the product of two complex numbers, using the C Py_complex representation.
Return the quotient of two complex numbers, using the C Py_complex representation.
If divisor is null, this method returns zero and sets errno to EDOM.
Return the exponentiation of num by exp, using the C Py_complex representation.
If num is null and exp is not a positive real number, this method returns zero and sets errno to EDOM.
This instance of PyTypeObject represents the Python complex number type. It is the same object as complex in the Python layer.
Return true if its argument is a PyComplexObject or a subtype of PyComplexObject.
Return true if its argument is a PyComplexObject, but not a subtype of PyComplexObject.
Create a new Python complex number object from a C Py_complex value.
Return a new PyComplexObject object from real and imag.
Return the Py_complex value of the complex number op.
If op is not a Python complex number object but has a __complex__() method, this method will first be called to convert op to a Python complex number object. Upon failure, this method returns -1.0 as a real value.