NAME
	IEEEDPNeg -- compute negative value of IEEE double precision number

   SYNOPSIS
	  x   = IEEEDPNeg(  y  );
	d0/d1		  d0/d1

	double	x,y;

   FUNCTION
	Invert the sign of argument y and return it to caller.

   INPUTS
	y - IEEE double precision floating point value

   RESULT
	x - IEEE double precision floating point value

   BUGS

   SEE ALSO