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InvisibleTech/power.scala

Created September 6, 2015 02:16
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Just a simple power function for an integer exponent. Just for fun.
Raw
power.scala
def pow(x: Double, n: Int) : Double = {
n match {
case 0 => 1.0
case n if n < 0 => 1.0 / pow(x, Math.abs(n))
case n if (n & 0x1) == 0 => pow(x, n >> 1) * pow(x, n >> 1)
case _ => x * pow(x, n - 1)
}
}
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