const math.c3

2 uses

	math (current package)
		erfinv.go#L37: 	c3 = 3.64784832476320460504e0
		erfinv.go#L102: 			z1 = ((((((c7*r+c6)*r+c5)*r+c4)*r+c3)*r+c2)*r+c1)*r + c0