const math.d4

2 uses

	math (current package)
		erfinv.go#L46: 	d4 = 2.0945065210512749128288442e-1
		erfinv.go#L103: 			z2 = ((((((d7*r+d6)*r+d5)*r+d4)*r+d3)*r+d2)*r+d1)*r + d0