function template
<valarray>
std::sin
template<class T> valarray<T> sin (const valarray<T>& x);
Compute sine of valarray elements
Returns a valarray containing the sines of all the elements of x, in the same order.
The function calls sin (unqualified) once for each element.
This function overloads cmath's sin.
Parameters
- x
- valarray containing elements of a type for which the unary function sin is defined. Each element's value represents an angle, expressed in radians.
Return value
A valarray object with the sine values of the elements of x.
Example
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// sin valarray example
#include <iostream> // std::cout
#include <cstddef> // std::size_t
#include <cmath> // std::sin(double)
#include <valarray> // std::valarray, std::sin(valarray)
int main ()
{
double val[] = {1.2, 3.14, 5.0};
std::valarray<double> foo (val,3);
std::valarray<double> bar = sin (foo);
std::cout << "foo:";
for (std::size_t i=0; i<foo.size(); ++i)
std::cout << ' ' << foo[i];
std::cout << '\n';
std::cout << "bar: ";
for (std::size_t i=0; i<bar.size(); ++i)
std::cout << ' ' << bar[i];
std::cout << '\n';
return 0;
}
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Output:
foo: 1.2 3.14 5
bar: 0.932039 0.00159265 -0.958924
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See also
- sin (cmath)
- Compute sine (function)
- cos
- Compute cosine of valarray elements (function template)
- tan
- Compute tangent of valarray elements (function template)