ln

Purpose

Natural logarithm of a non-linear expression

Synopsis

function ln(x:cpnlinexp) : cpnlinexp

function ln(x:cplinexp) : cpnlinexp

function ln(x:cpfloatvar) : cpnlinexp

function ln(x:cpvar) : cpnlinexp

Argument

x	Non-linear expression

Return value

A natural logarithm constraint over a non-linear expression x: y = ln x