Scala - Math nextDown() Method

The Scala Math nextDown() method returns the floating-point value adjacent to argument in the direction of negative infinity. In special cases it returns the following:

• If either argument is a NaN, then NaN is returned.
• If the argument is negative infinity, the result is negative infinity.
• If the argument is zero, the result is -Double.MinValue or -Float.MinValue.

Syntax

```def nextDown(x: Double): Double = java.lang.Math.nextDown(x)
def nextDown(x: Float): Float = java.lang.Math.nextDown(x)
```

Parameters

 `x` Specify starting floating-point value.

Return Value

Returns the floating-point value adjacent to argument in the direction of negative infinity.

NA.

Example:

In the example below, Math.nextDown() method returns the floating-point value adjacent to argument in the direction of negative infinity.

```object MainObject {
def main(args: Array[String]) {
println("Math.nextDown(10.55) = "
+ Math.nextDown(10.55));
println("Math.nextDown(-10.55) = "
+ Math.nextDown(-10.55));
println("Math.nextDown(0) = "
+ Math.nextDown(0));
println("Math.nextDown(Double.NaN) = "
+ Math.nextDown(Double.NaN));
println("Math.nextDown(Double.PositiveInfinity) = "
+ Math.nextDown(Double.PositiveInfinity));
}
}
```

The output of the above code will be:

```Math.nextDown(10.55) = 10.549999999999999
Math.nextDown(-10.55) = -10.550000000000002
Math.nextDown(0) = -1.4E-45
Math.nextDown(Double.NaN) = NaN
Math.nextDown(Double.PositiveInfinity) = 1.7976931348623157E308
```

❮ Scala - Math Methods

5