const math.e7

2 uses

	math (current package)
		erfinv.go#L58: 	e7 = 2.01033439929228813265e-7
		erfinv.go#L106: 			z1 = ((((((e7*r+e6)*r+e5)*r+e4)*r+e3)*r+e2)*r+e1)*r + e0