Square Root of a value without Karel option

MoEL · August 22, 2023 at 4:12 PM

Hi everyone,

Is there a way to find the square root of a value without Karel (SQRT fonction)?

Thank you

hermann · August 22, 2023 at 4:35 PM

Lookout for Heron's Method. With that you can write your own program to calculate the square root.

gpunkt · August 22, 2023 at 4:37 PM

There is a TP-instruction for this, but it's only included in the Math function option J593 as far as I'm aware.

**SkyeFire** · August 22, 2023 at 4:38 PM

Newton's method can take a while unless you accept looser accuracy, but should be possible to implement in TP:

Find root of a number using Newton's method - GeeksforGeeks

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hermann · August 22, 2023 at 4:40 PM

You are right. And surprise, surprise: that Math function package is more or less a collection of small Karel programs you can call from TP.

MoEL · August 23, 2023 at 11:02 AM

Thank you all for your answers,

I found the Babylonian method for finding a square root.

Here is the code for it:

Code

double sqrt(double number)
{    double error = 0.00001; //define the precision of your result    double s = number;
    while ((s - number / s) > error) //loop until precision satisfied     {        s = (s + number / s) / 2;    }    return s;
}

now i will do some tests and compare between this ans sqrt fonction in karel lanuage to see if this is enough for my application

Thank you again

Square Root of a value without Karel option

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