NAME
	IEEESPFix -- convert IEEE single float to integer

   SYNOPSIS
	x   = IEEESPFix(  y  );
	d0		 d0

	long	x;
	float	y;

   FUNCTION
	Convert IEEE single precision argument to a 32 bit signed integer
	and return result.

   INPUTS
	y -- IEEE single precision floating point value

   RESULT
	if no overflow occured then return
		x -- 32 bit signed integer
	if overflow return largest +- integer
		For round to zero

   BUGS

   SEE ALSO
	IEEESPFlt()