Routine Name:	abs

Description:	Returns absolute value of number.

Usage:		positive-number = abs any-number

		positive-number		returned as absolute value of
					any_number

		any-number		number (float or int) for which to
					compute absolute value

Example:	genesis >  echo { abs -22 }
		22

		genesis >  int x
		genesis >  float y
		genesis >  y = -33.333
		genesis >  echo { abs {y} }
		33.333000183
		genesis >  x = {abs {y}}
		genesis >  echo {x}
		33

Notes:		
