Created
October 5, 2013 19:53
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| def sqrtIter(guess: Double, x: Double): Double = | |
| if (isGoodEnough(guess, x)) guess | |
| else sqrtIter(improve(guess, x), x) | |
| def improve(guess: Double, x: Double) = | |
| (guess + x / guess) / 2 | |
| def isGoodEnough(guess: Double, x: Double) = | |
| abs(guess * guess - x) < 0.001 | |
| def sqrt(x: Double) = srqtIter(1.0, x) |
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