std::proj<div class="t-tr-text">(Std :: complexe)<div class="t-tr-dropdown"><div><div><div class="t-tr-dropdown-arrow-border"></div><div class="t-tr-dropdown-arrow"></div><div class="t-tr-dropdown-h">Original:</div><div class="t-tr-dropdown-orig">(std::complex)</div><div class="t-tr-dropdown-notes">The text has been machine-translated via [http://translate.google.com Google Translate].<br/> You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.</div></div></div></div></div>
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Déclaré dans l'en-tête <complex> | ||
template<class T > complex<T> proj(const complex<T>& z ); | (depuis C++11) | |
Renvoie la saillie du
z nombre complexe sur la sphère de Riemann .Original:
Returns the projection of the complex number
z onto the Riemann sphere.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Pour la plupart des
z, std::proj(z)==z, mais tous les infinis complexes, même les numéros où un composant est infini et l'autre est NaN, deviennent positifs infini réel, (INFINITY, 0) ou (INFINITY, -0). Le signe de l'imaginaire (zéro) composant est le signe de std::imag(z) . Original:
For most
z, std::proj(z)==z, but all complex infinities, even the numbers where one component is infinite and the other is NaN, become positive real infinity, (INFINITY, 0) or (INFINITY, -0). The sign of the imaginary (zero) component is the sign of std::imag(z). The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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Sommaire |
[modifier]Paramètres
| z | - | valeur complexe Original: complex value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[modifier]Retourne la valeur
la projection de
z sur la sphère de RiemannOriginal:
the projection of
z onto the Riemann sphereThe text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
[modifier]Exemple
#include <iostream>#include <complex> int main(){std::complex<double> c1(1, 2);std::cout<<"proj"<< c1 <<" = "<< std::proj(c1)<<'\n'; std::complex<double> c2(INFINITY, -1);std::cout<<"proj"<< c2 <<" = "<< std::proj(c2)<<'\n'; std::complex<double> c3(0, -INFINITY);std::cout<<"proj"<< c3 <<" = "<< std::proj(c3)<<'\n';}
Résultat :
proj(1,2) = (1,2) proj(inf,-1) = (inf,-0) proj(0,-inf) = (inf,-0)
[modifier]Voir aussi
renvoie l'amplitude d'un nombre complexe Original: returns the magnitude of a complex number The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction générique) | |
retourne la norme au carré Original: returns the squared magnitude The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction générique) | |
construit un nombre complexe de magnitude et de l'angle de phase Original: constructs a complex number from magnitude and phase angle The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction générique) | |
