# Square Root

Oblivion does **not** include a square root function. The Oblivion Script Extender does - you can find out about it at SquareRoot. Without OBSE, you must use this code:

This uses Newton-Raphson approximation, and gives accuracy to two decimal places for numbers less than or equal to 100. Adding more steps to it increases accuracy very quickly.

NOTE: For a check such as the distance between two points it's not required to actually take the square root. The Forumal of Pythagoras goes A^2 + B^2 = C^2, so instead of "if sqrt(X*X + Y*Y) == C" one can use "If (X*X + Y*Y) == (C*C)", where C is the distance you want to have checked. (For the mundane stuff GetDistance should work, but you may not always want to work in units)

This is a Stage Function, and as such must be created as a Quest Stage of a global script and called as a function. This assumes a Quest called Wiki with the variables declared. Therefore, you must modify this code to include the name of your Quest (assuming it is not Wiki, which it shouldn't be). Alternatively, however, it would not be difficult to incorporate this code into your script directly.

The list of variables you will need declared in your Global Script:

float input ;(the number whose root you need) float SqRt ;(the root, your answer)

Your input variable need not necessarily be a float, it could be a short or long, but SqRt needs to be a float, as few square roots are integers. You are free to rename either, but remember to change the function code.

;originally supplied by Galerion set Wiki.SqRt to input/2 set Wiki.SqRt to ( Wiki.SqRt + ( Wiki.input / Wiki.SqRt ) ) / 2 set Wiki.SqRt to ( Wiki.SqRt + ( Wiki.input / Wiki.SqRt ) ) / 2 set Wiki.SqRt to ( Wiki.SqRt + ( Wiki.input / Wiki.SqRt ) ) / 2 set Wiki.SqRt to ( Wiki.SqRt + ( Wiki.input / Wiki.SqRt ) ) / 2