Objetos de números complejos

Los objetos de números complejos de Python se implementan como dos tipos distintos cuando se ven desde la API de C: uno es el objeto de Python expuesto a los programas de Python, y el otro es una estructura en C que representa el valor de número complejo real. La API proporciona funciones para trabajar con ambos.

Números complejos como estructuras C

Tenga en cuenta que las funciones que aceptan estas estructuras como parámetros y las retornan como resultados lo hacen por valor en lugar de desreferenciarlas a través de punteros. Esto es consistente en toda la API.

type 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.

double real

double imag

The structure is defined as:

typedef struct {
    double real;
    double imag;
} Py_complex;

Py_complex _Py_c_sum(Py_complex left, Py_complex right)

Retorna la suma de dos números complejos, utilizando la representación C Py_complex.

Py_complex _Py_cr_sum(Py_complex left, double right)

Return the sum of a complex number and a real number, using the C Py_complex representation.

Added in version 3.14.

Py_complex _Py_c_diff(Py_complex left, Py_complex right)

Retorna la diferencia entre dos números complejos, usando la representación C Py_complex.

Py_complex _Py_cr_diff(Py_complex left, double right)

Return the difference between a complex number and a real number, using the C Py_complex representation.

Added in version 3.14.

Py_complex _Py_rc_diff(double left, Py_complex right)

Return the difference between a real number and a complex number, using the C Py_complex representation.

Added in version 3.14.

Py_complex _Py_c_neg(Py_complex num)

Retorna la negación del número complejo num, utilizando la representación C Py_complex.

Py_complex _Py_c_prod(Py_complex left, Py_complex right)

Retorna el producto de dos números complejos, usando la representación C Py_complex.

Py_complex _Py_cr_prod(Py_complex left, double right)

Return the product of a complex number and a real number, using the C Py_complex representation.

Added in version 3.14.

Py_complex _Py_c_quot(Py_complex dividend, Py_complex divisor)

Retorna el cociente de dos números complejos, utilizando la representación C Py_complex.

If divisor is null, this method returns zero and sets errno to EDOM.

Py_complex _Py_cr_quot(Py_complex dividend, double divisor)

Return the quotient of a complex number and a real number, using the C Py_complex representation.

If divisor is zero, this method returns zero and sets errno to EDOM.

Added in version 3.14.

Py_complex _Py_rc_quot(double dividend, Py_complex divisor)

Return the quotient of a real number and a complex number, using the C Py_complex representation.

If divisor is zero, this method returns zero and sets errno to EDOM.

Added in version 3.14.

Py_complex _Py_c_pow(Py_complex num, Py_complex exp)

Retorna la exponenciación de num por exp, utilizando la representación C Py_complex.

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

Set errno to ERANGE on overflows.

Números complejos como objetos de Python

type PyComplexObject

Este subtipo de PyObject representa un objeto de número complejo de Python.

PyTypeObject PyComplex_Type

Part of the Stable ABI.

Esta instancia de PyTypeObject representa el tipo de número complejo de Python. Es el mismo objeto que complex en la capa de Python.

int PyComplex_Check(PyObject *p)

Retorna verdadero si su argumento es un PyComplexObject o un subtipo de PyComplexObject. Esta función siempre finaliza con éxito.

int PyComplex_CheckExact(PyObject *p)

Retorna verdadero si su argumento es un PyComplexObject, pero no un subtipo de PyComplexObject. Esta función siempre finaliza con éxito.

PyObject *PyComplex_FromCComplex(Py_complex v)

Return value: New reference.

Create a new Python complex number object from a C Py_complex value. Return NULL with an exception set on error.

PyObject *PyComplex_FromDoubles(double real, double imag)

Return value: New reference. Part of the Stable ABI.

Return a new PyComplexObject object from real and imag. Return NULL with an exception set on error.

double PyComplex_RealAsDouble(PyObject *op)

Part of the Stable ABI.

Return the real part of op as a C double.

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. If __complex__() is not defined then it falls back to call PyFloat_AsDouble() and returns its result.

Upon failure, this method returns -1.0 with an exception set, so one should call PyErr_Occurred() to check for errors.

Distinto en la versión 3.13: Use __complex__() if available.

double PyComplex_ImagAsDouble(PyObject *op)

Part of the Stable ABI.

Return the imaginary part of op as a C double.

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. If __complex__() is not defined then it falls back to call PyFloat_AsDouble() and returns 0.0 on success.

Upon failure, this method returns -1.0 with an exception set, so one should call PyErr_Occurred() to check for errors.

Distinto en la versión 3.13: Use __complex__() if available.

Py_complex PyComplex_AsCComplex(PyObject *op)

Retorna el valor Py_complex del número complejo 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. If __complex__() is not defined then it falls back to __float__(). If __float__() is not defined then it falls back to __index__().

Upon failure, this method returns Py_complex with real set to -1.0 and with an exception set, so one should call PyErr_Occurred() to check for errors.

Distinto en la versión 3.8: Use __index__() if available.