vvacos(_:_:_:)
Calculates the arccosine of each element in an array of double-precision values.
Declaration
func vvacos(_: UnsafeMutablePointer<Double>, _: UnsafePointer<Double>, _: UnsafePointer<Int32>)Discussion
Parameters:
- parameter 1
The output array, y.
- parameter 2
The input array, x.
- parameter 3
The number of elements in the arrays.
The calculated values are in the range [0, pi].
If x is 1, the result is +0.
If |x| > 1, the result is NaN.