#!/bin/csh -f
#+
# abs -- return the absolute value
#
# Purpose:
#	Compute the absolute value of an expression
#
# Usage:
#	abs x
# 
# Arguments:
# 	x = value or expression to be evaluated
#
# Output:
#	Prints the absolute value of x on the terminal
# 
# Exit values:
#	 0 = normal completion
#
# Example:
#	1) Compute absolute value of a simple value:
#		abs -1.2345	# returns "1.2345"
#	2) Compute absolute value of an expression using Cshell variables:
#		set a = -1.2345
#		set b = 10
#		abs $a + $b	# returns "8.7655"
#		abs "$a * $b"	# returns "12.345"
#-
# Modification history:
#	2000-Jul-04	GDW	Original version
#-----------------------------------------------------------------------
calc "abs($*)"