Time complexity of Math.Sqrt()?

Question

How can I find the complexity of this function?

private double EuclideanDistance(MFCC.MFCCFrame vec1, MFCC.MFCCFrame vec2)
{
  double Distance = 0.0;
  for (         


        

Answer 1

You can consider it O(1):

In other words, Math.Sqrt() translates to a single floating point machine code instruction

source: c# Math.Sqrt Implementation