const math.f6

2 uses

	math (current package)
		erfinv.go#L65: 	f6 = 2.010321207683943062279931e-7
		erfinv.go#L107: 			z2 = ((((((f7*r+f6)*r+f5)*r+f4)*r+f3)*r+f2)*r+f1)*r + f0