LN Function

LN(a)

Returns the natural logarithm (base e) of a.

Parameters

a(REAL)

The input value.

Return Value

Returns a REAL.

Remarks

If a is less than zero, the task will fault. An error will be logged in the Event Log and the user program running on the task will stop.

Examples

LN(1.0) returns 0.0

LN(2.718282) returns 1.0.