std::proj<div class="t-tr-text">（のstd :: complex）<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>

 

C++

言語

コンセプト

ユーティリティライブラリ

ストリングスライブラリ

コンテナライブラリ

アルゴリズムライブラリ

イテレータライブラリ

ニューメリックスライブラリ

入力/出力ライブラリ

ローカライゼーションライブラリ

正規表現ライブラリ (C++11)

アトミック操作ライブラリ (C++11)

スレッドのサポートライブラリ (C++11)

 

ニューメリックスライブラリ

一般的な数学関数

浮動小数点環境

複素数

数値配列

擬似乱数生成

コンパイル時有理数演算 (C++11)

汎用の数値演算 Original: Generic numeric operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

iota (C++11)

accumulate

inner_product

adjacent_difference

partial_sum

 

複素数

メンバ関数 Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
complex::complex
complex::operator=
complex::real
complex::imag
complex::operator+= complex::operator-= complex::operator*= complex::operator/=
非メンバ関数 Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
operator== operator!=
operator<< operator>>
real
imag
abs
arg
norm
conj
proj (C++11)
polar
指数関数 Original: Exponential functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
exp
log
log10
電源機能 Original: Power functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
pow
sqrt
三角関数 Original: Trigonometric functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
sin cos tan	asin (C++11) acos (C++11) atan (C++11)
双曲線関数 Original: Hyperbolic functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
sinh cosh tanh	asinh (C++11) acosh (C++11) atanh (C++11)

 

Defined in header <complex>
template< class T > complex<T> proj( const complex<T>& z );		(C++11およびそれ以降)

リーマン球面上に複素数zの投影を返し.

Original:

Returns the projection of the complex number z onto the Riemann sphere.

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ほとんどのz、std::proj(z)==zが、すべての複雑な無限大、一つの成分が無限であり、もう一方がNaNであるか偶数で、正の実数の無限大になり、(INFINITY, 0)または(INFINITY, -0)。虚数（ゼロ）成分の符号はstd::imag(z)のサインです.

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).

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パラメータ

z

-

複素数値 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.

値を返します

リーマン球面への射影z

Original:

the projection of z onto the Riemann sphere

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例

このコードを実行します

#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';
}

出力:

proj(1,2) = (1,2)
proj(inf,-1) = (inf,-0)
proj(0,-inf) = (inf,-0)

参照

abs(std::complex)	複素数の絶対値を返します 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. (関数テンプレート)
norm	振幅の2乗を返します 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. (関数テンプレート)
polar	振幅と位相角から複素数を構築します 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. (関数テンプレート)