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

fun ln1p(x: Double): Double

Computes ln(x + 1).

This function can be implemented to produce more precise result for x near zero.

Special cases:

• ln1p(NaN) is NaN
• ln1p(x) is NaN where x < -1.0
• ln1p(-1.0) is -Inf
• ln1p(+Inf) is +Inf

See Also

ln

expm1

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

fun ln1p(x: Float): Float

Computes ln(a + 1).

This function can be implemented to produce more precise result for x near zero.

Special cases:

• ln1p(NaN) is NaN
• ln1p(x) is NaN where x < -1.0
• ln1p(-1.0) is -Inf
• ln1p(+Inf) is +Inf

See Also

ln

expm1