NAME
	  abs -	return integer absolute	value
SYNTAX
	  int abs (i)
	  int i;
DESCRIPTION
	  Abs returns the absolute value of its	integer	operand.
BUGS
	  In two's-complement representation, the absolute value of
	  the negative integer with largest magnitude is undefined.
	  Some implementations trap this error,	but others simply
	  ignore it.
SEE ALSO
	  floor(3M).