kotlin-stdlib/kotlin.math/ln

ln

fun ln(x: Double): Double

fun ln(x: Float): Float

inline fun ln(x: Double): Double

inline fun ln(x: Float): Float

inline fun ln(x: Double): Double

inline fun ln(x: Float): Float

external fun ln(x: Double): Double

external fun ln(x: Float): Float

Computes the natural logarithm (base E) of the value x.

Special cases:

ln(NaN) is NaN
ln(x) is NaN when x < 0.0
ln(+Inf) is +Inf
ln(0.0) is -Inf

Since Kotlin

1.2