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   NAME
	IEEESPSincos -- compute the arc tangent of a floating point number

   SYNOPSIS
	  x   = IEEESPSincos( z ,  y  );
	d0		     a0  d0

	float	x,y,*z;

   FUNCTION
	Compute sin and cosine of y in IEEE single precision.
	Store the cosine in *z. Return the sine of y.

   INPUTS
	y - IEEE single precision floating point value
	z - pointer to IEEE single precision floating point number

   RESULT
	x - IEEE single precision floating point value

   BUGS

   SEE ALSO
	IEEESPSin(), IEEESPCos()