Routine Name:	log

Description:	Returns logarithm (base "e") of number.

Usage:		log-value = {log number}

Example:	genesis >  echo { log 1 }
		0
		genesis > echo {log {exp 1}}
		0.9999999404
		genesis > echo {log 0}
		-Infinity

Notes:		To get the base 10 log of x, use {log {x}}/{log 10}.

See also:	exp

