inWholeSeconds

The value of this duration expressed as a Long number of seconds.

The part of this duration that is smaller than a second becomes a fractional part of the result and then is truncated (rounded towards zero).

An infinite duration value is converted either to Long.MAX_VALUE or Long.MIN_VALUE depending on its sign.

Since Kotlin

1.6

Samples

import kotlin.test.*
import kotlin.time.*
import kotlin.time.Duration.Companion.days
import kotlin.time.Duration.Companion.hours
import kotlin.time.Duration.Companion.microseconds
import kotlin.time.Duration.Companion.milliseconds
import kotlin.time.Duration.Companion.minutes
import kotlin.time.Duration.Companion.nanoseconds
import kotlin.time.Duration.Companion.seconds

fun main() { 
   //sampleStart 
   println(25_900.milliseconds.inWholeSeconds) // 25

println("(-Duration.INFINITE).inWholeSeconds == Long.MIN_VALUE is ${(-Duration.INFINITE).inWholeSeconds == Long.MIN_VALUE}") // true 
   //sampleEnd
}