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std::pow(std::valarray)

性病：：POW%28 std：：valArray%29

Defined in header ​​
template< class T > valarray<T> pow( const valarray<T>& base, const valarray<T>& exp (1)​
template< class T > valarray<T> pow( const valarray<T>& base, const T& vexp (2)​
template< class T > valarray<T> pow( const T& vbase, const valarray<T>& exp (3)​

使某一力量产生价值。

1%29计算数字数组中每个元素的值。base从数字数组中提升到相应元素指定的功率。exp...

如果base.size() != exp.size()...

2%29计算数字数组中每个元素的值。base升到权力vexp...

3%29计算vbase提升到数字数组中的元素定义的幂。exp...

参数

base-numeric array containing the values of the base
exp-numeric array containing the values of the exponent
vbase-a value defining the base
vexp-a value defining the exponent

返回值

包含指数结果的数字数组。

注记

不合格职能%28pow%29用于执行计算。如果没有这样的功能，std::pow由于参数相关查找而使用。

函数的返回类型与std::valarray在这种情况下，替换类型具有以下属性：

  • 全const成员职能std::valarray提供。

  • std::valarray，，，std::slice_array，，，std::gslice_array，，，std::mask_array和std::indirect_array可以从替换类型构造。

  • 所有接受类型参数的函数conststd::valarray&除begin()和end()%28，因为C++14%29也应该接受替换类型。

  • 接受两个类型参数的所有函数conststd::valarray&应该接受每一个组合conststd::valarray&以及替代型。

  • 返回类型不会在最嵌套的参数类型上添加两个以上的模板嵌套级别。

例

另见

sqrt(std::valarray)applies the function std::sqrt to each element of valarray (function template)
powraises a number to the given power (xy) (function)
pow(std::complex)complex power, one or both arguments may be a complex number (function template)

 © cppreference.com

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http：//en.cppreference.com/w/cpp/数值/valArray/pow

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