What is Math.pow() in Scala?

The pow() function calculates the value of the numberbase raised to the power of another numberexponent.

Figure 1 shows the mathematical representation of the pow() function.

Figure 1: Mathematical representation of pow() function

The following module is required for this function:

import scala.math._

Syntax

```scala Double pow(Double baseNumber, Double exponent) ```

Parameters

The `pow()` function requires two parameters:
  • A base number
  • An exponent number

Return value

`pow()` returns the value of the base number raised to the exponent number. >- If the parameter value of the base, exponent, or both is positive infinity, then it returns positive infinity. >- If the parameter value of the base, exponent, or both is negative infinity, then it returns zero. >- If the parameter value of the base, exponent, or both is NaN, then it returns NaN.

Example

import scala.math._
object Main extends App {
    //positive: baseNumber     positive: exponent
    println(s"The value of pow(2,3) = ${pow(2,3)}"); 
    //positive: baseNumber     negative: exponent
    println(s"The value of pow(0.25,-2) = ${pow(0.25,-2)}"); 
    //negative: baseNumber     positive: exponent
    println(s"The value of pow(-10,2) = ${pow(-10,2)}"); 
    //negative: baseNumber     negative: exponent
    println(s"The value of pow(-0.5,-1) = ${pow(-0.5,-1)}"); 
    //error ouput
    println(s"The value of pow(Double.PositiveInfinity,Double.PositiveInfinity) = ${pow(Double.PositiveInfinity,Double.PositiveInfinity)}");
    println(s"The value of pow(Double.NegativeInfinity,Double.NegativeInfinity) = ${pow(Double.NegativeInfinity,Double.NegativeInfinity)}");
    println(s"The value of pow(Double.NaN,Double.NaN) = ${pow(Double.NaN,Double.NaN)}"); 
}
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