<valarray>
template<class T> valarray<T> asin (const valarray<T>& x);
Compute arc sine of valarray elements
Returns a valarray object containing the principal value of the arc sine of all the elements of x, expressed in radians.
This function overloads cmath's asin function.
Parameters
- x
- valarray containing elements of a type for which the unary function asin is defined.
Return value
A valarray object with the arc sine values of the elements of x.
Example
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// asin valarray example
#include <iostream>
#include <cmath>
#include <valarray>
using namespace std;
int main ()
{
double val[] = {0.0, 0.25, 0.5, 0.75, 1.0};
valarray<double> foo (val,5);
valarray<double> bar = asin (foo);
cout << "foo: ";
for (size_t i=0; i<foo.size(); ++i)
cout << foo[i] << ' ';
cout << endl;
cout << "bar: ";
for (size_t i=0; i<bar.size(); ++i)
cout << bar[i] << ' ';
cout << endl;
return 0;
}
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Output:
foo: 0 0.25 0.5 0.75 1
bar: 0 0.25268 0.523599 0.848062 1.5708
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See also
| sin | Compute sine of valarray elements (function template) |
| acos | Compute arc cosine of valarray elements (function template) |
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