NAME
	IEEESPNeg -- compute negative value of IEEE single precision number

   SYNOPSIS
	  x   = IEEESPNeg(  y  );
	  d0		   d0

	float	x,y;

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

   INPUTS
	y - IEEE single precision floating point value

   RESULT
	x - IEEE single precision floating point value

   BUGS

   SEE ALSO