Newton's method to find square root

There are many ways to find the square root, here is the Newton method to find the square root.

The method is this: if you have a guess Y for the value of the square root of x, then you can get a better guess by doing a simple operation: only the average value of Y and X/y is required (he is closer to the actual square root)

Code implementation:

float sqrt (float  x) {    float guess = x;      while 0.0001 )    {        2;    }     return guess;}

Note: This square root algorithm is actually a special case of Newton's method, and Newton's method is a general technique for finding the root of the equation.

Newton's method to find square root