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      std::sin(std::valarray)

      From cppreference.com
      <cpp‎ |numeric‎ |valarray
       
       
       
      std::valarray
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      Defined in header<valarray>
      template<class T>
      valarray<T> sin(const valarray<T>& va);

      For each element inva computes sine of the value of the element.

      Contents

      [edit]Parameters

      va - value array to apply the operation to

      [edit]Return value

      Value array containing sine of the values inva.

      [edit]Notes

      Unqualified function (sin) is used to perform the computation. If such function is not available,std::sin is used due toargument-dependent lookup.

      The function can be implemented with the return type different fromstd::valarray. In this case, the replacement type has the following properties:

      [edit]Possible implementation

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

      [edit]Example

      Run this code
      #include <cmath>#include <iostream>#include <numbers>#include <valarray> int main(){std::valarray<double> v1={0,0.25,0.5,0.75,1};std::valarray<double> v2=std::sin(v1*std::numbers::pi); for(double n: v2)std::cout<<std::fixed<< n<<' ';std::cout<<'\n';}

      Output:

      0.000000 0.707107 1.000000 0.707107 0.000000

      [edit]See also

      applies the functionstd::cos to each element of valarray
      (function template)[edit]
      applies the functionstd::tan to each element of valarray
      (function template)[edit]
      applies the functionstd::asin to each element of valarray
      (function template)[edit]
      (C++11)(C++11)
      computes sine (\({\small\sin{x}}\)sin(x))
      (function)[edit]
      computes sine of a complex number (\({\small\sin{z}}\)sin(z))
      (function template)[edit]
      Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/numeric/valarray/sin&oldid=160817"

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