$log

Return the natural logarithm of X (log_eX).

$log(X)

Parameters

X—positive numeric constant, or a field (or indirect reference to a field), variable, function, or expression that evaluates to a positive numeric value. X must be in the range 0 through 10⁹⁹⁹⁹.

Return Values

Natural logarithm of X

If an error occurs, $procerror contains a negative value that identifies the exact error.

Values of $procerror Commonly Returned Following $log and $log10.
Value	Error constant	Meaning
`-1204`	`<UPROCERR_NEGATIVE>`	Negative value not allowed.
`-1205`	`<UPROCERR_ZERO>`	Zero value not allowed.

Use

Allowed in all component types.

Description

The $log function returns the natural logarithm of X (that is, log_eX).

Using $log

The following example returns the natural logarithm of the given expression:

vLogarithm = $log(MYFIELD * 2)