std::exp<div class="t-tr-text">(Std :: valarray)<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::valarray)</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>

< cpp‎ | numeric‎ | valarray

C++
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Numerik-Bibliothek
Gemeinsame mathematischen Funktionen
Floating-Point-Umgebung
Komplexe Zahlen
Numerische Arrays
Pseudo-Zufallszahlen
Compile-time rationale Arithmetik (C++11)
Generische numerische Operationen
Original:
Generic numeric operations
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 iota (C++11)
 accumulate
 inner_product
 partial_sum

`std::valarray`
Member-Funktionen
Original:
Member functions
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 valarray::valarray
 valarray::~valarray
 valarray::operator=
 valarray::operator[]
 valarray::swap
 valarray::size
 valarray::resize
 valarray::sum
 valarray::min
 valarray::max
 valarray::shift
 valarray::cshift
 valarray::apply
Non-Member-Funktionen
Original:
Non-member functions
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 swap (C++11)
 begin (C++11)
 end (C++11)
 abs
 exp
 log
 log10
 pow
 sqrt
 sin
 cos
 tan
 asin
 acos
 atan
 atan2
 sinh
 cosh
 tanh
Helper-Klassen
Original:
Helper classes
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 slice_array
 gslice_array
 indirect_array
 slice
 gslice

 Defined in header template< class T > valarray exp( const valarray& va );
Für jedes Element in `va` berechnet e der Kraft gleich dem Wert des Elements angehoben .
Original:
For each element in `va` computes e raised to the power equal to the value of the element.
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Inhaltsverzeichnis

[Bearbeiten]Parameter

 va - Wert-Array, um die Operation zu verarbeitenOriginal: value array to apply the operation toThe text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

[Bearbeiten]Rückgabewert

Wert Array mit e durch die Werte in `va` erhöht .
Original:
Value array containing e raised by the values in `va`.
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[Bearbeiten]Notes

Unqualifizierte Funktion (exp) verwendet wird, um die Berechnung auszuführen. Wenn diese Funktion nicht verfügbar ist, wird std::exp verwendet wird wegen Argument abhängig Lookup .
Original:
Unqualified function (exp) is used to perform the computation. If such function is not available, std::exp is used due to argument dependent lookup.
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Die Funktion kann mit dem Rückgabetyp anders std::valarray umgesetzt werden. In diesem Fall weist die Ersetzungsart die folgenden Eigenschaften:
Original:
The function can be implemented with the return type different from std::valarray. In this case, the replacement type has the following properties:
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• Alle const Elementfunktionen std::valarray bereitgestellt werden .
Original:
All const member functions of std::valarray are provided.
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• std::valarray, std::slice_array, std::gslice_array, std::mask_array und std::indirect_array kann aus dem Ersatz-Typ gebaut werden .
Original:
std::valarray, std::slice_array, std::gslice_array, std::mask_array and std::indirect_array can be constructed from the replacement type.
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• Alle Funktionen Annehmen eines Argumente des Typs const std::valarray& sollten auch akzeptieren, den Austausch Typ .
Original:
All functions accepting a arguments of type const std::valarray& should also accept the replacement type.
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• Alle Funktionen mit zwei Parametern vom Typ const std::valarray& sollten akzeptieren, jede Kombination von const std::valarray& und den Ersatz Typ .
Original:
All functions accepting two arguments of type const std::valarray& should accept every combination of const std::valarray& and the replacement type.
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[Bearbeiten]Mögliche Implementierung

 ```template< class T > valarray exp( const valarray& va ) { valarray other = va; for (T &i : other) { i = exp(i); } return other; // proxy object may be returned }```

[Bearbeiten]Beispiel

Dieses Beispiel zeigt die Eulersche Identität e
= -1
und die damit verbundenen Exponenten .
Original:
This example demonstrates the Euler's identity e
= -1
and the related exponents.
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```#include <iostream>
#include <complex>
#include <valarray>

int main()
{
const double pi = std::acos(-1);
std::valarray<std::complex<double>> v = {
{0, 0}, {0, pi/2}, {0, pi}, {0, 3*pi/2}, {0, 2*pi}
};
std::valarray<std::complex<double>> v2 = std::exp(v);
for(auto n : v2) {
std::cout << std::fixed << n << '\n';
}
}```

Output:

```(1.000000,0.000000)
(0.000000,1.000000)
(-1.000000,0.000000)
(-0.000000,-1.000000)
(1.000000,-0.000000)```

[Bearbeiten]Siehe auch

 exp Renditen e an die angegebene Leistung (ex) angehoben Original: returns e raised to the given power (ex) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion)  exp(std::complex) complex base e exponential (Funktions-Template)