Thread: square root of a number in C

This might help.

It's not that much work. Alot of the code if the link was for handling user input, the function that computes the square root was just -

Code:

void NewtonRaphson (float accuracy, int userIn, float *answer) 
{ 
    /* Local defs * 
    float guess = 1.0; 
    float div2 = (float)userIn/2;   


    while (1)
    { 
    guess = (div2+ userIn/div2)/2;

    if((fabs (guess-div2) < accuracy))break;
 
    div2 = guess;
    }

    *answer = guess; 

}