Objets représentant des nombres complexes

type PyComplexObject

Ce sous-type de l'objet PyObject représente un nombre complexe en Python.

Py_complex cval

The complex number value, using the C Py_complex representation.

Deprecated since version 3.15.0a0 (unreleased), will be removed in version 3.20: Use PyComplex_AsCComplex() and PyComplex_FromCComplex() to convert a Python complex number to/from the C Py_complex representation.

PyTypeObject PyComplex_Type

Part of the Stable ABI.

Cette instance de PyTypeObject représente le type nombre complexe Python. C'est le même objet que la classe complex de la couche Python.

int PyComplex_Check(PyObject *p)

Return true if its argument is a PyComplexObject or a subtype of PyComplexObject. This function always succeeds.

int PyComplex_CheckExact(PyObject *p)

Return true if its argument is a PyComplexObject, but not a subtype of PyComplexObject. This function always succeeds.

PyObject *PyComplex_FromDoubles(double real, double imag)

Valeur de retour : nouvelle référence. 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.

Modifié dans la version 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.

Modifié dans la version 3.13: Use __complex__() if available.

type Py_complex

This C structure defines export format for a Python complex number object.

double real

double imag

The structure is defined as:

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

PyObject *PyComplex_FromCComplex(Py_complex v)

Valeur de retour : nouvelle référence.

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

Py_complex PyComplex_AsCComplex(PyObject *op)

Renvoie la valeur du nombre complexe op sous la forme d'un Py_complex en C.

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.

Modifié dans la version 3.8: Use __index__() if available.

Nombres complexes en tant que structures C

The API also provides functions for working with complex numbers, using the Py_complex representation. 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.

Please note, that these functions are soft deprecated since Python 3.15. Avoid using this API in a new code to do complex arithmetic: either use the Number Protocol API or use native complex types, like double complex.

Py_complex _Py_c_sum(Py_complex left, Py_complex right)

Renvoie la somme de deux nombres complexes, sous la forme d'un Py_complex en C.

Obsolète depuis la version 3.15.

Py_complex _Py_c_diff(Py_complex left, Py_complex right)

Renvoie la différence de deux nombres complexes, sous la forme d'un Py_complex en C.

Obsolète depuis la version 3.15.

Py_complex _Py_c_neg(Py_complex num)

Return the negation of the complex number num, using the C Py_complex representation.

Obsolète depuis la version 3.15.

Py_complex _Py_c_prod(Py_complex left, Py_complex right)

Renvoie le produit de deux nombres complexes, sous la forme d'un Py_complex en C.

Obsolète depuis la version 3.15.

Py_complex _Py_c_quot(Py_complex dividend, Py_complex divisor)

Renvoie le quotient de deux nombres complexes, sous la forme d'un Py_complex en C.

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

Obsolète depuis la version 3.15.

Py_complex _Py_c_pow(Py_complex num, Py_complex exp)

Renvoie num à la puissance exp, sous la forme d'un Py_complex en C.

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.

Obsolète depuis la version 3.15.

double _Py_c_abs(Py_complex num)

Return the absolute value of the complex number num.

Set errno to ERANGE on overflows.

Obsolète depuis la version 3.15.