Objetos de Números Complexos

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.

Números complexos como estruturas C.

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.

Py_complex

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;

Py_complex _Py_c_sum(Py_complex left, Py_complex right)

Retorna a soma de dois números complexos, utilizando a representação C :c:tipo:`Py_complex`

Py_complex _Py_c_diff(Py_complex left, Py_complex right)

Retorna a diferença entre dois números complexos, utilizando a representação C :c:tipo:`Py_complex`

Py_complex _Py_c_neg(Py_complex complex)

Retorna a negação do número complexo complex, utilizando a representação C :c:tipo:`Py_complex`

Py_complex _Py_c_prod(Py_complex left, Py_complex right)

Retorna o produto de dois números complexos, utilizando a representação C :c:tipo:`Py_complex`

Py_complex _Py_c_quot(Py_complex dividend, Py_complex divisor)

Retorna o quociente de dois números complexos, utilizando a representação C :c:tipo:`Py_complex`

Se divisor é nulo, este método retorna zero e define errno para EDOM.

Py_complex _Py_c_pow(Py_complex num, Py_complex exp)

Retorna a exponenciação de num por exp, utilizando a representação C :c:tipo:`Py_complex`

If num is null and exp is not a positive real number, this method returns zero and sets errno to EDOM.

Números complexos como objetos Python

PyComplexObject

Este subtipo de :c:tipo:`PyObject` representa um objeto Python de número complexo

PyTypeObject PyComplex_Type

This instance of PyTypeObject represents the Python complex number type. It is the same object as complex and types.ComplexType.

int PyComplex_Check(PyObject *p)

Return true if its argument is a PyComplexObject or a subtype of PyComplexObject.

Alterado na versão 2.2: Allowed subtypes to be accepted.

int PyComplex_CheckExact(PyObject *p)

Return true if its argument is a PyComplexObject, but not a subtype of PyComplexObject.

Novo na versão 2.2.

PyObject* PyComplex_FromCComplex(Py_complex v)

Return value: New reference.

Create a new Python complex number object from a C Py_complex value.

PyObject* PyComplex_FromDoubles(double real, double imag)

Return value: New reference.

Return a new PyComplexObject object from real and imag.

double PyComplex_RealAsDouble(PyObject *op)

Return the real part of op as a C double.

double PyComplex_ImagAsDouble(PyObject *op)

Return the imaginary part of op as a C double.

Py_complex PyComplex_AsCComplex(PyObject *op)

Return the Py_complex value of the complex number op. Upon failure, this method returns -1.0 as a real value.

Alterado na versão 2.6: 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.