Platform and version requirements: JVM (1.2), JS (1.2), Native (1.2)

fun ln(x: Double): Double

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