NAME
	IEEESPTan -- compute the tangent of a floating point number

   SYNOPSIS
	  x   = IEEESPTan(  y  );
	d0		  d0

	float	x,y;

   FUNCTION
	Compute tangent of y in IEEE single precision

   INPUTS
	y - IEEE single precision floating point value

   RESULT
	x - IEEE single precision floating point value

   BUGS

   SEE ALSO
	IEEESPAtan(), IEEESPSin(), IEEESPCos()