# Issue

*This Content is from Stack Overflow. Question asked by Andreas Steffensen *

I needed a square root approximation in C so i looked this post: Squareroot approximation (C) . and got this following implementation:

```
float x = n;
float y = 1;
float e = 0.001; // Accuracy level
if (n == 0)
return 0;
while ((x - y) > e)
{
x = (x + y) / 2;
if (n == 0 || x == 0)
return 0;
y = n / x;
}
return x;
```

Can anyone help me find the time complexity of this.

And if i have to much strain on the processor?

# Solution

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