Kotlin: FInd closest divisible

Question

Is there function in kotlin stdlib to get closest divisible number like this: fun closestDivisible(initialValue: Number, divisibleBy: Int)

Answer 1

There is no predefined function but there is a solution:

fun closestDivisible(initialValue: Int, divisibleBy: Int): Number {
    val quotient = initialValue.toDouble() / divisibleBy
    val floor = floor(quotient).toInt()
    val ceil = ceil(quotient).toInt()
    return when {
        (initialValue - floor * divisibleBy) < (ceil * divisibleBy - initialValue) -> floor * divisibleBy
        else -> ceil * divisibleBy
    }
}

This function returns the closest number that is divisible by 'divisibleBy'.