What is Math.sqrt() in Scala?

The sqrt() function returns the square root of a number sent as a parameter.

Figure 1 below shows the mathematical representation of the sqrt() function.

Syntax

Double sqrt(Double number)

Parameter

This function requires a number as a parameter.

Return value

If the input is a valid positive double number, then the square root of the number sent as a parameter is returned.
If the parameter value is positive infinity, then it returns positive infinity.
If the parameter value is NaN, less than zero, or negative infinity, then it returns NaN.

Example

import scala.math._
object Main extends App {
    //positive number
    println(s"The value of sqrt(10) = ${sqrt(10)}"); 
    println(s"The value of sqrt(0) = ${sqrt(0)}"); 
    println(s"The value of sqrt(4) = ${sqrt(4)}"); 
    //error outputs
    println(s"The value of sqrt(Double.PositiveInfinity) = ${sqrt(Double.PositiveInfinity)}");
    println(s"The value of sqrt(Double.NegativeInfinity) = ${sqrt(Double.NegativeInfinity)}");
    println(s"The value of sqrt(Double.NaN) = ${sqrt(Double.NaN)}");
    println(s"The value of sqrt(-1) = ${sqrt(-1)}"); 
    
}